diff --git a/README.md b/README.md
index 4524075..df49725 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 quaggaJS
 ========
 
-- [Changelog](#changelog) (2015-05-20)
+- [Changelog](#changelog) (2015-06-13)
 
 ## What is QuaggaJS?
 
@@ -212,12 +212,18 @@ The default `config` object is set as followed:
 ```javascript
 {
   inputStream: { name: "Live",
-       type: "LiveStream",
-       constraints: {
-         width: 640,
-         height: 480,
-         facing: "environment"
-       }
+      type: "LiveStream",
+      constraints: {
+          width: 640,
+          height: 480,
+          facing: "environment"
+      },
+      area: { // defines rectangle of the detection/localization area
+          top: "0%",    // top offset
+          right: "0%",  // right offset
+          left: "0%",   // left offset
+          bottom: "0%"  // bottom offset
+      }
   },
   tracking: false,
   debug: false,
@@ -293,6 +299,15 @@ work.
 
 ## <a name="changelog">Changelog</a>
 
+### 2015-06-13
+- Improvements
+  - Added fixes for ``Code39Reader`` (trailing whitespace was missing)
+
+### 2015-06-09
+- Features
+  - Introduced the ``area`` property
+  - Ability to define a rectangle where localization/decoding should be applied
+
 ### 2015-05-20
 - Improvements
   - Making EAN and UPC readers even more restrictive
diff --git a/dist/quagga.js b/dist/quagga.js
index f61b3d2..b07df34 100644
--- a/dist/quagga.js
+++ b/dist/quagga.js
@@ -1489,7 +1489,9 @@ define('input_stream',["image_loader"], function(ImageLoader) {
             _eventNames = ['canrecord', 'ended'],
             _eventHandlers = {},
             _calculatedWidth,
-            _calculatedHeight;
+            _calculatedHeight,
+            _topRight = {x: 0, y: 0},
+            _canvasSize = {x: 0, y: 0};
 
         function initSize() {
             var width = video.videoWidth,
@@ -1497,6 +1499,9 @@ define('input_stream',["image_loader"], function(ImageLoader) {
 
             _calculatedWidth = _config.size ? width/height > 1 ? _config.size : Math.floor((width/height) * _config.size) : width;
             _calculatedHeight = _config.size ? width/height > 1 ? Math.floor((height/width) * _config.size) : _config.size : height;
+
+            _canvasSize.x = _calculatedWidth;
+            _canvasSize.y = _calculatedHeight;
         }
 
         that.getRealWidth = function() {
@@ -1589,6 +1594,24 @@ define('input_stream',["image_loader"], function(ImageLoader) {
             }
         };
 
+        that.setTopRight = function(topRight) {
+            _topRight.x = topRight.x;
+            _topRight.y = topRight.y;
+        };
+
+        that.getTopRight = function() {
+            return _topRight;
+        };
+
+        that.setCanvasSize = function(size) {
+            _canvasSize.x = size.x;
+            _canvasSize.y = size.y;
+        };
+
+        that.getCanvasSize = function() {
+            return _canvasSize;
+        };
+
         that.getFrame = function() {
             return video;
         };
@@ -1624,7 +1647,9 @@ define('input_stream',["image_loader"], function(ImageLoader) {
             calculatedWidth,
             calculatedHeight,
             _eventNames = ['canrecord', 'ended'],
-            _eventHandlers = {};
+            _eventHandlers = {},
+            _topRight = {x: 0, y: 0},
+            _canvasSize = {x: 0, y: 0};
 
         function loadImages() {
             loaded = false;
@@ -1634,6 +1659,8 @@ define('input_stream',["image_loader"], function(ImageLoader) {
                 height = imgs[0].height;
                 calculatedWidth = _config.size ? width/height > 1 ? _config.size : Math.floor((width/height) * _config.size) : width;
                 calculatedHeight = _config.size ? width/height > 1 ? Math.floor((height/width) * _config.size) : _config.size : height;
+                _canvasSize.x = calculatedWidth;
+                _canvasSize.y = calculatedHeight;
                 loaded = true;
                 frameIdx = 0;
                 setTimeout(function() {
@@ -1723,6 +1750,24 @@ define('input_stream',["image_loader"], function(ImageLoader) {
             }
         };
 
+        that.setTopRight = function(topRight) {
+            _topRight.x = topRight.x;
+            _topRight.y = topRight.y;
+        };
+
+        that.getTopRight = function() {
+            return _topRight;
+        };
+
+        that.setCanvasSize = function(size) {
+            _canvasSize.x = size.x;
+            _canvasSize.y = size.y;
+        };
+
+        that.getCanvasSize = function() {
+            return _canvasSize;
+        };
+
         that.getFrame = function() {
             var frame;
             
@@ -6557,21 +6602,64 @@ define('cv_utils',['cluster', "array_helper", "gl-matrix"], function(Cluster2, A
         optimalPatchSize = findPatchSizeForDivisors(common);
         if (!optimalPatchSize) {
             optimalPatchSize = findPatchSizeForDivisors(this._computeDivisors(wideSide));
-            throw new AdjustToSizeError("", optimalPatchSize);
+            if (!optimalPatchSize) {
+                optimalPatchSize = findPatchSizeForDivisors((this._computeDivisors(desiredPatchSize * nrOfPatches)));
+            }
         }
         return optimalPatchSize;
     };
 
-    function AdjustToSizeError(message, desiredPatchSize) {
-        this.name = 'AdjustToSizeError';
-        this.message = message || 'AdjustToSizeError';
-        this.patchSize = desiredPatchSize;
-    }
+    CVUtils._parseCSSDimensionValues = function(value) {
+        var dimension = {
+                value: parseFloat(value),
+                unit: value.indexOf("%") === value.length-1 ? "%" : "%"
+            };
 
-    AdjustToSizeError.prototype = Object.create(RangeError.prototype);
-    AdjustToSizeError.prototype.constructor = AdjustToSizeError;
+        return dimension;
+    };
 
-    CVUtils.AdjustToSizeError = AdjustToSizeError;
+    CVUtils._dimensionsConverters = {
+        top: function(dimension, context) {
+            if (dimension.unit === "%") {
+                return Math.floor(context.height * (dimension.value / 100));
+            }
+        },
+        right: function(dimension, context) {
+            if (dimension.unit === "%") {
+                return Math.floor(context.width - (context.width * (dimension.value / 100)));
+            }
+        },
+        bottom: function(dimension, context) {
+            if (dimension.unit === "%") {
+                return Math.floor(context.height - (context.height * (dimension.value / 100)));
+            }
+        },
+        left: function(dimension, context) {
+            if (dimension.unit === "%") {
+                return Math.floor(context.width * (dimension.value / 100));
+            }
+        }
+    };
+
+    CVUtils.computeImageArea = function(inputWidth, inputHeight, area) {
+        var context = {width: inputWidth, height: inputHeight};
+
+        var parsedArea = Object.keys(area).reduce(function(result, key) {
+            var value = area[key],
+                parsed = CVUtils._parseCSSDimensionValues(value),
+                calculated = CVUtils._dimensionsConverters[key](parsed, context);
+
+            result[key] = calculated;
+            return result;
+        }, {});
+
+        return {
+            sx: parsedArea.left,
+            sy: parsedArea.top,
+            sw: parsedArea.right - parsedArea.left,
+            sh: parsedArea.bottom - parsedArea.top
+        };
+    };
 
     return (CVUtils);
 });
@@ -8046,10 +8134,11 @@ function(ImageWrapper, CVUtils, Rasterizer, Tracer, skeletonizer, ArrayHelper, I
             initBuffers();
             initCanvas();
         },
+
         locate : function() {
             var patchesFound,
-            topLabels = [],
-            boxes = [];
+            topLabels,
+            boxes;
 
             if (_config.halfSample) {
                 CVUtils.halfSample(_inputImageWrapper, _currentImageWrapper);
@@ -8076,6 +8165,43 @@ function(ImageWrapper, CVUtils, Rasterizer, Tracer, skeletonizer, ArrayHelper, I
 
             boxes = findBoxes(topLabels, maxLabel);
             return boxes;
+        },
+
+        checkImageConstraints: function(inputStream, config) {
+            var patchSize,
+                width = inputStream.getWidth(),
+                height = inputStream.getHeight(),
+                halfSample = config.halfSample ? 0.5 : 1,
+                size,
+                area;
+
+            // calculate width and height based on area
+            if (inputStream.getConfig().area) {
+                area = CVUtils.computeImageArea(width, height, inputStream.getConfig().area);
+                inputStream.setTopRight({x: area.sx, y: area.sy});
+                inputStream.setCanvasSize({x: width, y: height});
+                width = area.sw;
+                height = area.sh;
+            }
+
+            size = {
+                x: Math.floor(width * halfSample),
+                y: Math.floor(height * halfSample)
+            };
+
+            patchSize = CVUtils.calculatePatchSize(config.patchSize, size);
+            console.log("Patch-Size: " + JSON.stringify(patchSize));
+
+            inputStream.setWidth(Math.floor(Math.floor(size.x/patchSize.x)*(1/halfSample)*patchSize.x));
+            inputStream.setHeight(Math.floor(Math.floor(size.y/patchSize.y)*(1/halfSample)*patchSize.y));
+
+            if ((inputStream.getWidth() % patchSize.x) === 0 && (inputStream.getHeight() % patchSize.y) === 0) {
+                return true;
+            }
+
+            throw new Error("Image dimensions do not comply with the current settings: Width (" +
+                width + " )and height (" + height +
+                ") must a multiple of " + patchSize.x);
         }
     };
 });
@@ -8380,7 +8506,13 @@ define(
             } while(decodedChar !== '*');
             result.pop();
 
+            if (!result.length) {
+                return null;
+            }
 
+            if(!self._verifyTrailingWhitespace(lastStart, nextStart, counters)) {
+                return null;
+            }
 
             return {
                 code : result.join(""),
@@ -8391,6 +8523,17 @@ define(
             };
         };
 
+        Code39Reader.prototype._verifyTrailingWhitespace = function(lastStart, nextStart, counters) {
+            var trailingWhitespaceEnd,
+                patternSize = ArrayHelper.sum(counters);
+
+            trailingWhitespaceEnd = nextStart - lastStart - patternSize;
+            if ((trailingWhitespaceEnd * 3) >= patternSize) {
+                return true;
+            }
+            return false;
+        };
+
         Code39Reader.prototype._patternToChar = function(pattern) {
             var i,
                 self = this;
@@ -9378,29 +9521,26 @@ define('frame_grabber',["cv_utils"], function(CVUtils) {
         var _that = {},
             _streamConfig = inputStream.getConfig(),
             _video_size = CVUtils.imageRef(inputStream.getRealWidth(), inputStream.getRealHeight()),
-            _size =_streamConfig.size ? CVUtils.imageRef(inputStream.getWidth(), inputStream.getHeight()) : _video_size,
-            _sx = 0,
-            _sy = 0,
-            _dx = 0,
-            _dy = 0,
-            _sWidth,
-            _dWidth,
-            _sHeight,
-            _dHeight,
-            _canvas = null,
+            _canvasSize = inputStream.getCanvasSize(),
+            _size = CVUtils.imageRef(inputStream.getWidth(), inputStream.getHeight()),
+            topRight = inputStream.getTopRight(),
+            _sx = topRight.x,
+            _sy = topRight.y,
+            _canvas,
             _ctx = null,
             _data = null;
 
-        _sWidth = _video_size.x;
-        _dWidth = _size.x;
-        _sHeight = _video_size.y;
-        _dHeight = _size.y;
-
         _canvas = canvas ? canvas : document.createElement("canvas");
-        _canvas.width = _size.x;
-        _canvas.height = _size.y;
+        _canvas.width = _canvasSize.x;
+        _canvas.height = _canvasSize.y;
         _ctx = _canvas.getContext("2d");
         _data = new Uint8Array(_size.x * _size.y);
+        console.log("FrameGrabber", JSON.stringify({
+            size: _size,
+            topRight: topRight,
+            videoSize: _video_size,
+            canvasSize: _canvasSize
+        }));
 
         /**
          * Uses the given array as frame-buffer 
@@ -9425,8 +9565,8 @@ define('frame_grabber',["cv_utils"], function(CVUtils) {
                 frame = inputStream.getFrame(),
                 ctxData;
             if (frame) {
-                _ctx.drawImage(frame, _sx, _sy, _sWidth, _sHeight, _dx, _dy, _dWidth, _dHeight);
-                ctxData = _ctx.getImageData(0, 0, _size.x, _size.y).data;
+                _ctx.drawImage(frame, 0, 0, _canvasSize.x, _canvasSize.y);
+                ctxData = _ctx.getImageData(_sx, _sy, _size.x, _size.y).data;
                 if(doHalfSample){
                     CVUtils.grayAndHalfSampleFromCanvasData(ctxData, _size, _data);
                 } else {
@@ -9502,6 +9642,12 @@ define('config',[],function(){
               minAspectRatio: 0,
               maxAspectRatio: 100,
               facing: "environment" // or user
+          },
+          area: {
+              top: "0%",
+              right: "0%",
+              left: "0%",
+              bottom: "0%"
           }
       },
       tracking: false,
@@ -9790,7 +9936,6 @@ define('quagga',[
         "events",
         "camera_access",
         "image_debug",
-        "cv_utils",
         "gl-matrix"],
 function(Code128Reader,
          EANReader,
@@ -9804,7 +9949,6 @@ function(Code128Reader,
          Events,
          CameraAccess,
          ImageDebug,
-         CVUtils,
          glMatrix) {
     
     
@@ -9887,39 +10031,10 @@ function(Code128Reader,
         _inputStream.addEventListener("canrecord", canRecord.bind(undefined, cb));
     }
 
-    function checkImageConstraints() {
-        var patchSize,
-            width = _inputStream.getWidth(),
-            height = _inputStream.getHeight(),
-            halfSample = _config.locator.halfSample ? 0.5 : 1,
-            size = {
-                x: Math.floor(width * halfSample),
-                y: Math.floor(height * halfSample)
-            };
-
+    function canRecord(cb) {
         if (_config.locate) {
-            try {
-                console.log(size);
-                patchSize = CVUtils.calculatePatchSize(_config.locator.patchSize, size);
-            } catch (error) {
-                if (error instanceof CVUtils.AdjustToSizeError) {
-                    _inputStream.setWidth(Math.floor(Math.floor(size.x/error.patchSize.x)*(1/halfSample)*error.patchSize.x));
-                    _inputStream.setHeight(Math.floor(Math.floor(size.y/error.patchSize.y)*(1/halfSample)*error.patchSize.y));
-                    patchSize = error.patchSize;
-                }
-            }
-            console.log("Patch-Size: " + JSON.stringify(patchSize));
-            if ((_inputStream.getWidth() % patchSize.x) === 0 && (_inputStream.getHeight() % patchSize.y) === 0) {
-                return true;
-            }
+            BarcodeLocator.checkImageConstraints(_inputStream, _config.locator);
         }
-        throw new Error("Image dimensions do not comply with the current settings: Width (" +
-                            width + " )and height (" + height +
-                            ") must a multiple of " + patchSize.x);
-    }
-
-    function canRecord(cb) {
-        checkImageConstraints();
         initCanvas();
         _framegrabber = FrameGrabber.create(_inputStream, _canvasContainer.dom.image);
         initConfig();
@@ -9952,8 +10067,8 @@ function(Code128Reader,
                 }
             }
             _canvasContainer.ctx.image = _canvasContainer.dom.image.getContext("2d");
-            _canvasContainer.dom.image.width = _inputStream.getWidth();
-            _canvasContainer.dom.image.height = _inputStream.getHeight();
+            _canvasContainer.dom.image.width = _inputStream.getCanvasSize().x;
+            _canvasContainer.dom.image.height = _inputStream.getCanvasSize().y;
 
             _canvasContainer.dom.overlay = document.querySelector("canvas.drawingBuffer");
             if (!_canvasContainer.dom.overlay) {
@@ -9969,8 +10084,8 @@ function(Code128Reader,
                 }
             }
             _canvasContainer.ctx.overlay = _canvasContainer.dom.overlay.getContext("2d");
-            _canvasContainer.dom.overlay.width = _inputStream.getWidth();
-            _canvasContainer.dom.overlay.height = _inputStream.getHeight();
+            _canvasContainer.dom.overlay.width = _inputStream.getCanvasSize().x;
+            _canvasContainer.dom.overlay.height = _inputStream.getCanvasSize().y;
         }
     }
 
@@ -10002,6 +10117,53 @@ function(Code128Reader,
         }
     }
 
+    function transformResult(result) {
+        var topRight = _inputStream.getTopRight(),
+            xOffset = topRight.x,
+            yOffset = topRight.y,
+            i;
+
+        if (!result || (xOffset === 0 && yOffset === 0)) {
+            return;
+        }
+
+
+        if (result.line && result.line.length === 2) {
+            moveLine(result.line);
+        }
+        if (result.boxes && result.boxes.length > 0) {
+            for (i = 0; i < result.boxes.length; i++) {
+                moveBox(result.boxes[i]);
+            }
+        }
+
+        function moveBox(box) {
+            var corner = box.length;
+
+            while(corner--) {
+                box[corner][0] += xOffset;
+                box[corner][1] += yOffset;
+            }
+        }
+
+        function moveLine(line) {
+            line[0].x += xOffset;
+            line[0].y += yOffset;
+            line[1].x += xOffset;
+            line[1].y += yOffset;
+        }
+    }
+
+    function publishResult(result) {
+        if (_onUIThread) {
+            transformResult(result);
+        }
+        Events.publish("processed", result);
+        if (result && result.codeResult) {
+            Events.publish("detected", result);
+        }
+    }
+
     function locateAndDecode() {
         var result,
             boxes;
@@ -10011,14 +10173,10 @@ function(Code128Reader,
             result = _decoder.decodeFromBoundingBoxes(boxes);
             result = result || {};
             result.boxes = boxes;
-            Events.publish("processed", result);
-            if (result && result.codeResult) {
-                Events.publish("detected", result);
-            }
+            publishResult(result);
         } else {
-            Events.publish("processed");
+            publishResult();
         }
-
     }
 
     function update() {
@@ -10102,10 +10260,7 @@ function(Code128Reader,
             } else if (e.data.event === 'processed') {
                 workerThread.imageData = new Uint8Array(e.data.imageData);
                 workerThread.busy = false;
-                Events.publish("processed", e.data.result);
-                if (e.data.result && e.data.result.codeResult) {
-                    Events.publish("detected", e.data.result);
-                }
+                publishResult(e.data.result);
             }
         };
 
diff --git a/dist/quagga.min.js b/dist/quagga.min.js
index 8c98b46..1041972 100644
--- a/dist/quagga.min.js
+++ b/dist/quagga.min.js
@@ -1,9 +1,9 @@
-/*! quagga 2015-06-07 */
+/*! quagga 2015-06-13 */
 !function(a,b){var c=b.toString();"undefined"!=typeof module?module.exports=b(c):a.Quagga=b(c)}(this,function(a){/**
  * @license almond 0.2.9 Copyright (c) 2011-2014, The Dojo Foundation All Rights Reserved.
  * Available via the MIT or new BSD license.
  * see: http://github.com/jrburke/almond for details
  */
-var b,c,d;return function(a){function e(a,b){return u.call(a,b)}function f(a,b){var c,d,e,f,g,h,i,j,k,l,m,n=b&&b.split("/"),o=s.map,p=o&&o["*"]||{};if(a&&"."===a.charAt(0))if(b){for(n=n.slice(0,n.length-1),a=a.split("/"),g=a.length-1,s.nodeIdCompat&&w.test(a[g])&&(a[g]=a[g].replace(w,"")),a=n.concat(a),k=0;k<a.length;k+=1)if(m=a[k],"."===m)a.splice(k,1),k-=1;else if(".."===m){if(1===k&&(".."===a[2]||".."===a[0]))break;k>0&&(a.splice(k-1,2),k-=2)}a=a.join("/")}else 0===a.indexOf("./")&&(a=a.substring(2));if((n||p)&&o){for(c=a.split("/"),k=c.length;k>0;k-=1){if(d=c.slice(0,k).join("/"),n)for(l=n.length;l>0;l-=1)if(e=o[n.slice(0,l).join("/")],e&&(e=e[d])){f=e,h=k;break}if(f)break;!i&&p&&p[d]&&(i=p[d],j=k)}!f&&i&&(f=i,h=j),f&&(c.splice(0,h,f),a=c.join("/"))}return a}function g(b,c){return function(){return n.apply(a,v.call(arguments,0).concat([b,c]))}}function h(a){return function(b){return f(b,a)}}function i(a){return function(b){q[a]=b}}function j(b){if(e(r,b)){var c=r[b];delete 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b.prototype=Object.create(a.prototype,c),b.prototype.constructor=b,b.prototype._decodeCode=function(a){var b,c,d,e,f=[0,0,0,0,0,0],g=this,h=a,i=!g._row[h],j=0,k={error:Number.MAX_VALUE,code:-1,start:a,end:a};for(b=h;b<g._row.length;b++)if(g._row[b]^i)f[j]++;else{if(j===f.length-1){for(e=g._normalize(f),c=0;c<g.CODE_PATTERN.length;c++)d=g._matchPattern(e,g.CODE_PATTERN[c]),d<k.error&&(k.code=c,k.error=d);return k.end=b,k}j++,f[j]=1,i=!i}return null},b.prototype._findEnd=function(){var a,b,c,d,e,f=[0,0,0,0,0,0,0],g=this,h=g._nextSet(g._row),i=!g._row[h],j=0,k={error:Number.MAX_VALUE,code:-1,start:0,end:0};for(a=h;a<g._row.length;a++)if(g._row[a]^i)f[j]++;else{if(j===f.length-1){for(d=0,c=0;c<f.length;c++)d+=f[c];if(e=g._normalize(f,13),b=g._matchPattern(e,g.CODE_PATTERN[g.STOP_CODE]),b<g.AVG_CODE_ERROR)return k.error=b,k.start=a-d,k.end=a,k;for(c=0;5>c;c++)f[c]=f[c+2];f[5]=0,f[6]=0,j--}else j++;f[j]=1,i=!i}return null},b.prototype._findStart=function(){var 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a,b,c=this,d=c._nextSet(c._row);!b;){if(b=c._findPattern(c.START_PATTERN,d),!b)return null;if(a=b.start-(b.end-b.start),a>=0&&c._matchRange(a,b.start,0))return b;d=b.end,b=null}},b.prototype._verifyTrailingWhitespace=function(a){var b,c=this;return b=a.end+(a.end-a.start),b<c._row.length&&c._matchRange(a.end,b,0)?a:null},b.prototype._findEnd=function(a,b){var c=this,d=c._findPattern(c.STOP_PATTERN,a,b,!1);return null!==d?c._verifyTrailingWhitespace(d):null},b.prototype._calculateFirstDigit=function(a){var b,c=this;for(b=0;b<c.CODE_FREQUENCY.length;b++)if(a===c.CODE_FREQUENCY[b])return b;return null},b.prototype._decodePayload=function(a,b,c){var d,e,f=this,g=0;for(d=0;6>d;d++){if(a=f._decodeCode(a.end),!a)return null;a.code>=f.CODE_G_START?(a.code=a.code-f.CODE_G_START,g|=1<<5-d):g|=0<<5-d,b.push(a.code),c.push(a)}if(e=f._calculateFirstDigit(g),null===e)return null;if(b.unshift(e),a=f._findPattern(f.MIDDLE_PATTERN,a.end,!0,!1),null===a)return 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a[0]=d*j+e*l,a[1]=d*k+e*m,a[2]=f*j+g*l,a[3]=f*k+g*m,a[4]=j*h+l*i+n,a[5]=k*h+m*i+o,a},i.mul=i.multiply,i.rotate=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=Math.sin(c),k=Math.cos(c);return a[0]=d*k+e*j,a[1]=-d*j+e*k,a[2]=f*k+g*j,a[3]=-f*j+k*g,a[4]=k*h+j*i,a[5]=k*i-j*h,a},i.scale=function(a,b,c){var d=c[0],e=c[1];return a[0]=b[0]*d,a[1]=b[1]*e,a[2]=b[2]*d,a[3]=b[3]*e,a[4]=b[4]*d,a[5]=b[5]*e,a},i.translate=function(a,b,c){return a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=b[3],a[4]=b[4]+c[0],a[5]=b[5]+c[1],a},i.str=function(a){return"mat2d("+a[0]+", "+a[1]+", "+a[2]+", "+a[3]+", "+a[4]+", "+a[5]+")"},"undefined"!=typeof a&&(a.mat2d=i);{var j={};new Float32Array([1,0,0,0,1,0,0,0,1])}j.create=function(){var a=new c(9);return a[0]=1,a[1]=0,a[2]=0,a[3]=0,a[4]=1,a[5]=0,a[6]=0,a[7]=0,a[8]=1,a},j.clone=function(a){var b=new c(9);return b[0]=a[0],b[1]=a[1],b[2]=a[2],b[3]=a[3],b[4]=a[4],b[5]=a[5],b[6]=a[6],b[7]=a[7],b[8]=a[8],b},j.copy=function(a,b){return a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=b[3],a[4]=b[4],a[5]=b[5],a[6]=b[6],a[7]=b[7],a[8]=b[8],a},j.identity=function(a){return a[0]=1,a[1]=0,a[2]=0,a[3]=0,a[4]=1,a[5]=0,a[6]=0,a[7]=0,a[8]=1,a},j.transpose=function(a,b){if(a===b){var c=b[1],d=b[2],e=b[5];a[1]=b[3],a[2]=b[6],a[3]=c,a[5]=b[7],a[6]=d,a[7]=e}else a[0]=b[0],a[1]=b[3],a[2]=b[6],a[3]=b[1],a[4]=b[4],a[5]=b[7],a[6]=b[2],a[7]=b[5],a[8]=b[8];return a},j.invert=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8],l=k*g-h*j,m=-k*f+h*i,n=j*f-g*i,o=c*l+d*m+e*n;return o?(o=1/o,a[0]=l*o,a[1]=(-k*d+e*j)*o,a[2]=(h*d-e*g)*o,a[3]=m*o,a[4]=(k*c-e*i)*o,a[5]=(-h*c+e*f)*o,a[6]=n*o,a[7]=(-j*c+d*i)*o,a[8]=(g*c-d*f)*o,a):null},j.adjoint=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8];return a[0]=g*k-h*j,a[1]=e*j-d*k,a[2]=d*h-e*g,a[3]=h*i-f*k,a[4]=c*k-e*i,a[5]=e*f-c*h,a[6]=f*j-g*i,a[7]=d*i-c*j,a[8]=c*g-d*f,a},j.determinant=function(a){var b=a[0],c=a[1],d=a[2],e=a[3],f=a[4],g=a[5],h=a[6],i=a[7],j=a[8];return b*(j*f-g*i)+c*(-j*e+g*h)+d*(i*e-f*h)},j.multiply=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=c[0],n=c[1],o=c[2],p=c[3],q=c[4],r=c[5],s=c[6],t=c[7],u=c[8];return a[0]=m*d+n*g+o*j,a[1]=m*e+n*h+o*k,a[2]=m*f+n*i+o*l,a[3]=p*d+q*g+r*j,a[4]=p*e+q*h+r*k,a[5]=p*f+q*i+r*l,a[6]=s*d+t*g+u*j,a[7]=s*e+t*h+u*k,a[8]=s*f+t*i+u*l,a},j.mul=j.multiply,j.translate=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=c[0],n=c[1];return a[0]=d,a[1]=e,a[2]=f,a[3]=g,a[4]=h,a[5]=i,a[6]=m*d+n*g+j,a[7]=m*e+n*h+k,a[8]=m*f+n*i+l,a},j.rotate=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=Math.sin(c),n=Math.cos(c);return a[0]=n*d+m*g,a[1]=n*e+m*h,a[2]=n*f+m*i,a[3]=n*g-m*d,a[4]=n*h-m*e,a[5]=n*i-m*f,a[6]=j,a[7]=k,a[8]=l,a},j.scale=function(a,b,c){var d=c[0],e=c[2];return a[0]=d*b[0],a[1]=d*b[1],a[2]=d*b[2],a[3]=e*b[3],a[4]=e*b[4],a[5]=e*b[5],a[6]=b[6],a[7]=b[7],a[8]=b[8],a},j.fromMat2d=function(a,b){return a[0]=b[0],a[1]=b[1],a[2]=0,a[3]=b[2],a[4]=b[3],a[5]=0,a[6]=b[4],a[7]=b[5],a[8]=1,a},j.fromQuat=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=c+c,h=d+d,i=e+e,j=c*g,k=c*h,l=c*i,m=d*h,n=d*i,o=e*i,p=f*g,q=f*h,r=f*i;return a[0]=1-(m+o),a[1]=k+r,a[2]=l-q,a[3]=k-r,a[4]=1-(j+o),a[5]=n+p,a[6]=l+q,a[7]=n-p,a[8]=1-(j+m),a},j.str=function(a){return"mat3("+a[0]+", "+a[1]+", "+a[2]+", "+a[3]+", "+a[4]+", "+a[5]+", "+a[6]+", "+a[7]+", "+a[8]+")"},"undefined"!=typeof a&&(a.mat3=j);{var k={};new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1])}k.create=function(){var a=new c(16);return a[0]=1,a[1]=0,a[2]=0,a[3]=0,a[4]=0,a[5]=1,a[6]=0,a[7]=0,a[8]=0,a[9]=0,a[10]=1,a[11]=0,a[12]=0,a[13]=0,a[14]=0,a[15]=1,a},k.clone=function(a){var b=new c(16);return b[0]=a[0],b[1]=a[1],b[2]=a[2],b[3]=a[3],b[4]=a[4],b[5]=a[5],b[6]=a[6],b[7]=a[7],b[8]=a[8],b[9]=a[9],b[10]=a[10],b[11]=a[11],b[12]=a[12],b[13]=a[13],b[14]=a[14],b[15]=a[15],b},k.copy=function(a,b){return a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=b[3],a[4]=b[4],a[5]=b[5],a[6]=b[6],a[7]=b[7],a[8]=b[8],a[9]=b[9],a[10]=b[10],a[11]=b[11],a[12]=b[12],a[13]=b[13],a[14]=b[14],a[15]=b[15],a},k.identity=function(a){return a[0]=1,a[1]=0,a[2]=0,a[3]=0,a[4]=0,a[5]=1,a[6]=0,a[7]=0,a[8]=0,a[9]=0,a[10]=1,a[11]=0,a[12]=0,a[13]=0,a[14]=0,a[15]=1,a},k.transpose=function(a,b){if(a===b){var c=b[1],d=b[2],e=b[3],f=b[6],g=b[7],h=b[11];a[1]=b[4],a[2]=b[8],a[3]=b[12],a[4]=c,a[6]=b[9],a[7]=b[13],a[8]=d,a[9]=f,a[11]=b[14],a[12]=e,a[13]=g,a[14]=h}else a[0]=b[0],a[1]=b[4],a[2]=b[8],a[3]=b[12],a[4]=b[1],a[5]=b[5],a[6]=b[9],a[7]=b[13],a[8]=b[2],a[9]=b[6],a[10]=b[10],a[11]=b[14],a[12]=b[3],a[13]=b[7],a[14]=b[11],a[15]=b[15];return a},k.invert=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8],l=b[9],m=b[10],n=b[11],o=b[12],p=b[13],q=b[14],r=b[15],s=c*h-d*g,t=c*i-e*g,u=c*j-f*g,v=d*i-e*h,w=d*j-f*h,x=e*j-f*i,y=k*p-l*o,z=k*q-m*o,A=k*r-n*o,B=l*q-m*p,C=l*r-n*p,D=m*r-n*q,E=s*D-t*C+u*B+v*A-w*z+x*y;
-return E?(E=1/E,a[0]=(h*D-i*C+j*B)*E,a[1]=(e*C-d*D-f*B)*E,a[2]=(p*x-q*w+r*v)*E,a[3]=(m*w-l*x-n*v)*E,a[4]=(i*A-g*D-j*z)*E,a[5]=(c*D-e*A+f*z)*E,a[6]=(q*u-o*x-r*t)*E,a[7]=(k*x-m*u+n*t)*E,a[8]=(g*C-h*A+j*y)*E,a[9]=(d*A-c*C-f*y)*E,a[10]=(o*w-p*u+r*s)*E,a[11]=(l*u-k*w-n*s)*E,a[12]=(h*z-g*B-i*y)*E,a[13]=(c*B-d*z+e*y)*E,a[14]=(p*t-o*v-q*s)*E,a[15]=(k*v-l*t+m*s)*E,a):null},k.adjoint=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8],l=b[9],m=b[10],n=b[11],o=b[12],p=b[13],q=b[14],r=b[15];return a[0]=h*(m*r-n*q)-l*(i*r-j*q)+p*(i*n-j*m),a[1]=-(d*(m*r-n*q)-l*(e*r-f*q)+p*(e*n-f*m)),a[2]=d*(i*r-j*q)-h*(e*r-f*q)+p*(e*j-f*i),a[3]=-(d*(i*n-j*m)-h*(e*n-f*m)+l*(e*j-f*i)),a[4]=-(g*(m*r-n*q)-k*(i*r-j*q)+o*(i*n-j*m)),a[5]=c*(m*r-n*q)-k*(e*r-f*q)+o*(e*n-f*m),a[6]=-(c*(i*r-j*q)-g*(e*r-f*q)+o*(e*j-f*i)),a[7]=c*(i*n-j*m)-g*(e*n-f*m)+k*(e*j-f*i),a[8]=g*(l*r-n*p)-k*(h*r-j*p)+o*(h*n-j*l),a[9]=-(c*(l*r-n*p)-k*(d*r-f*p)+o*(d*n-f*l)),a[10]=c*(h*r-j*p)-g*(d*r-f*p)+o*(d*j-f*h),a[11]=-(c*(h*n-j*l)-g*(d*n-f*l)+k*(d*j-f*h)),a[12]=-(g*(l*q-m*p)-k*(h*q-i*p)+o*(h*m-i*l)),a[13]=c*(l*q-m*p)-k*(d*q-e*p)+o*(d*m-e*l),a[14]=-(c*(h*q-i*p)-g*(d*q-e*p)+o*(d*i-e*h)),a[15]=c*(h*m-i*l)-g*(d*m-e*l)+k*(d*i-e*h),a},k.determinant=function(a){var b=a[0],c=a[1],d=a[2],e=a[3],f=a[4],g=a[5],h=a[6],i=a[7],j=a[8],k=a[9],l=a[10],m=a[11],n=a[12],o=a[13],p=a[14],q=a[15],r=b*g-c*f,s=b*h-d*f,t=b*i-e*f,u=c*h-d*g,v=c*i-e*g,w=d*i-e*h,x=j*o-k*n,y=j*p-l*n,z=j*q-m*n,A=k*p-l*o,B=k*q-m*o,C=l*q-m*p;return r*C-s*B+t*A+u*z-v*y+w*x},k.multiply=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=b[9],n=b[10],o=b[11],p=b[12],q=b[13],r=b[14],s=b[15],t=c[0],u=c[1],v=c[2],w=c[3];return a[0]=t*d+u*h+v*l+w*p,a[1]=t*e+u*i+v*m+w*q,a[2]=t*f+u*j+v*n+w*r,a[3]=t*g+u*k+v*o+w*s,t=c[4],u=c[5],v=c[6],w=c[7],a[4]=t*d+u*h+v*l+w*p,a[5]=t*e+u*i+v*m+w*q,a[6]=t*f+u*j+v*n+w*r,a[7]=t*g+u*k+v*o+w*s,t=c[8],u=c[9],v=c[10],w=c[11],a[8]=t*d+u*h+v*l+w*p,a[9]=t*e+u*i+v*m+w*q,a[10]=t*f+u*j+v*n+w*r,a[11]=t*g+u*k+v*o+w*s,t=c[12],u=c[13],v=c[14],w=c[15],a[12]=t*d+u*h+v*l+w*p,a[13]=t*e+u*i+v*m+w*q,a[14]=t*f+u*j+v*n+w*r,a[15]=t*g+u*k+v*o+w*s,a},k.mul=k.multiply,k.translate=function(a,b,c){var d,e,f,g,h,i,j,k,l,m,n,o,p=c[0],q=c[1],r=c[2];return 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b=!1;for(g=0;g<j.length;g++)h=j[g],h.fits(a)&&(h.add(a),b=!0);return b}var f,g,h,i,j=[];for(d||(d="rad"),f=0;f<b.length;f++)i=a.createPoint(b[f],f,d),e(i)||j.push(a.create(i,c));return j},e.Tracer={trace:function(a,b){function c(c,d){function e(a,b){return a.x>b.x-j&&a.x<b.x+j&&a.y>b.y-k&&a.y<b.y+k?!0:!1}var f,g,h,i,j=1,k=Math.abs(b[1]/10),l=!1;for(f=a[c],i=d?{x:f.x+b[0],y:f.y+b[1]}:{x:f.x-b[0],y:f.y-b[1]},h=d?c+1:c-1,g=a[h];g&&(l=e(g,i))!==!0&&Math.abs(g.y-f.y)<b[1];)h=d?h+1:h-1,g=a[h];return l?h:null}var d,e=10,f=[],g=[],h=0,i=0;for(d=0;e>d;d++){for(h=Math.floor(Math.random()*a.length),f=[],i=h,f.push(a[i]);null!==(i=c(i,!0));)f.push(a[i]);if(h>0)for(i=h;null!==(i=c(i,!1));)f.push(a[i]);f.length>g.length&&(g=f)}return g}},e.DILATE=1,e.ERODE=2,e.dilate=function(a,b){var c,d,e,f,g,h,i,j=a.data,k=b.data,l=a.size.y,m=a.size.x;for(c=1;l-1>c;c++)for(d=1;m-1>d;d++)f=c-1,g=c+1,h=d-1,i=d+1,e=j[f*m+h]+j[f*m+i]+j[c*m+d]+j[g*m+h]+j[g*m+i],k[c*m+d]=e>0?1:0},e.erode=function(a,b){var c,d,e,f,g,h,i,j=a.data,k=b.data,l=a.size.y,m=a.size.x;for(c=1;l-1>c;c++)for(d=1;m-1>d;d++)f=c-1,g=c+1,h=d-1,i=d+1,e=j[f*m+h]+j[f*m+i]+j[c*m+d]+j[g*m+h]+j[g*m+i],k[c*m+d]=5===e?1:0},e.subtract=function(a,b,c){c||(c=a);for(var d=a.data.length,e=a.data,f=b.data,g=c.data;d--;)g[d]=e[d]-f[d]},e.bitwiseOr=function(a,b,c){c||(c=a);for(var d=a.data.length,e=a.data,f=b.data,g=c.data;d--;)g[d]=e[d]||f[d]},e.countNonZero=function(a){for(var b=a.data.length,c=a.data,d=0;b--;)d+=c[b];return d},e.topGeneric=function(a,b,c){var d,e,f,g,h=0,i=0,j=[];for(d=0;b>d;d++)j[d]={score:0,item:null};for(d=0;d<a.length;d++)if(e=c.apply(this,[a[d]]),e>i)for(f=j[h],f.score=e,f.item=a[d],i=Number.MAX_VALUE,g=0;b>g;g++)j[g].score<i&&(i=j[g].score,h=g);return j},e.grayArrayFromImage=function(a,b,c,d){c.drawImage(a,b,0,a.width,a.height);var f=c.getImageData(b,0,a.width,a.height).data;e.computeGray(f,d)},e.grayArrayFromContext=function(a,b,c,d){var f=a.getImageData(c.x,c.y,b.x,b.y).data;e.computeGray(f,d)},e.grayAndHalfSampleFromCanvasData=function(a,b,c){for(var d,e=0,f=b.x,g=Math.floor(a.length/4),h=b.x/2,i=0,j=b.x;g>f;){for(d=0;h>d;d++)c[i]=Math.floor((.299*a[4*e+0]+.587*a[4*e+1]+.114*a[4*e+2]+(.299*a[4*(e+1)+0]+.587*a[4*(e+1)+1]+.114*a[4*(e+1)+2])+(.299*a[4*f+0]+.587*a[4*f+1]+.114*a[4*f+2])+(.299*a[4*(f+1)+0]+.587*a[4*(f+1)+1]+.114*a[4*(f+1)+2]))/4),i++,e+=2,f+=2;e+=j,f+=j}},e.computeGray=function(a,b){var c=a.length/4,d=0;for(d=0;c>d;d++)b[d]=Math.floor(.299*a[4*d+0]+.587*a[4*d+1]+.114*a[4*d+2])},e.loadImageArray=function(a,b,c){c||(c=document.createElement("canvas"));var d=new Image;d.callback=b,d.onload=function(){c.width=this.width,c.height=this.height;var a=c.getContext("2d");a.drawImage(this,0,0);var b=new Uint8Array(this.width*this.height);a.drawImage(this,0,0);var d=a.getImageData(0,0,this.width,this.height).data;e.computeGray(d,b),this.callback(b,{x:this.width,y:this.height},this)},d.src=a},e.halfSample=function(a,b){for(var c=a.data,d=a.size.x,e=b.data,f=0,g=d,h=c.length,i=d/2,j=0;h>g;){for(var k=0;i>k;k++)e[j]=Math.floor((c[f]+c[f+1]+c[g]+c[g+1])/4),j++,f+=2,g+=2;f+=d,g+=d}},e.hsv2rgb=function(a,b){var c=a[0],d=a[1],e=a[2],f=e*d,g=f*(1-Math.abs(c/60%2-1)),h=e-f,i=0,j=0,k=0;return b=b||[0,0,0],60>c?(i=f,j=g):120>c?(i=g,j=f):180>c?(j=f,k=g):240>c?(j=g,k=f):300>c?(i=g,k=f):360>c&&(i=f,k=g),b[0]=255*(i+h)|0,b[1]=255*(j+h)|0,b[2]=255*(k+h)|0,b},e._computeDivisors=function(a){var b,c=[],d=[];for(b=1;b<Math.sqrt(a)+1;b++)a%b===0&&(d.push(b),b!==a/b&&c.unshift(Math.floor(a/b)));return d.concat(c)},e._computeIntersection=function(a,b){for(var c=0,d=0,e=[];c<a.length&&d<b.length;)a[c]===b[d]?(e.push(a[c]),c++,d++):a[c]>b[d]?d++:c++;return e},e.calculatePatchSize=function(a,b){function c(a){for(var b=0,c=a[Math.floor(a.length/2)];b<a.length-1&&a[b]<n;)b++;return b>0&&(c=Math.abs(a[b]-n)>Math.abs(a[b-1]-n)?a[b-1]:a[b]),n/c<j[l+1]/j[l]&&n/c>j[l-1]/j[l]?{x:c,y:c}:null}var e,f=this._computeDivisors(b.x),g=this._computeDivisors(b.y),h=Math.max(b.x,b.y),i=this._computeIntersection(f,g),j=[8,10,15,20,32,60,80],k={"x-small":5,small:4,medium:3,large:2,"x-large":1},l=k[a]||k.medium,m=j[l],n=Math.floor(h/m);if(e=c(i),!e)throw e=c(this._computeDivisors(h)),new d("",e);return e},d.prototype=Object.create(RangeError.prototype),d.prototype.constructor=d,e.AdjustToSizeError=d,e}),d("image_wrapper",["subImage","cv_utils","array_helper","gl-matrix"],function(a,b,c,d){function e(a,b,d,e){b?this.data=b:d?(this.data=new d(a.x*a.y),d===Array&&e&&c.init(this.data,0)):(this.data=new Uint8Array(a.x*a.y),Uint8Array===Array&&e&&c.init(this.data,0)),this.size=a}var f=d.vec2,g=d.mat2;return e.prototype.inImageWithBorder=function(a,b){return a.x>=b&&a.y>=b&&a.x<this.size.x-b&&a.y<this.size.y-b},e.transform=function(a,b,c,d,h){var i,j,k,l=b.size.x,m=b.size.y,n=a.size.x,o=a.size.y,p=f.clone([c[0],c[2]]),q=f.clone([c[1],c[3]]),r=0,s=f.subtract(d,g.xVec2(c,h,f.clone()),f.clone()),t=s[0],u=s[1],v=t,w=u,x=e.sample;p[0]<0?t+=l*p[0]:v+=l*p[0],q[0]<0?t+=m*q[0]:v+=m*q[0],p[1]<0?u+=l*p[1]:w+=l*p[1],q[1]<0?u+=m*q[1]:w+=m*q[1];var y=f.subtract(q,f.scale(p,l,f.clone()),f.clone());if(t>=0&&u>=0&&n-1>v&&o-1>w){for(i=s,j=0;m>j;++j,f.add(i,y))for(k=0;l>k;++k,f.add(i,p))b.set(k,j,x(a,i[0],i[1]));return 0}var z=n-1,A=o-1,B=0;for(i=s,j=0;m>j;++j,f.add(i,y))for(k=0;l>k;++k,f.add(i,p))0<=i[0]&&0<=i[1]&&i[0]<z&&i[1]<A?b.set(k,j,x(a,i[0],i[1])):(b.set(k,j,r),++B);return B},e.sample=function(a,b,c){var d=Math.floor(b),e=Math.floor(c),f=a.size.x,g=e*a.size.x+d,h=a.data[g+0],i=a.data[g+1],j=a.data[g+f],k=a.data[g+f+1],l=h-i;b-=d,c-=e;var m=Math.floor(b*(c*(l-j+k)-l)+c*(j-h)+h);return m},e.clearArray=function(a){for(var b=a.length;b--;)a[b]=0},e.prototype.subImage=function(b,c){return new a(b,c,this)},e.prototype.subImageAsCopy=function(a,b){var c,d,e=a.size.y,f=a.size.x;for(c=0;f>c;c++)for(d=0;e>d;d++)a.data[d*f+c]=this.data[(b.y+d)*this.size.x+b.x+c]},e.prototype.copyTo=function(a){for(var b=this.data.length,c=this.data,d=a.data;b--;)d[b]=c[b]},e.prototype.get=function(a,b){return this.data[b*this.size.x+a]},e.prototype.getSafe=function(a,b){var c;if(!this.indexMapping){for(this.indexMapping={x:[],y:[]},c=0;c<this.size.x;c++)this.indexMapping.x[c]=c,this.indexMapping.x[c+this.size.x]=c;for(c=0;c<this.size.y;c++)this.indexMapping.y[c]=c,this.indexMapping.y[c+this.size.y]=c}return this.data[this.indexMapping.y[b+this.size.y]*this.size.x+this.indexMapping.x[a+this.size.x]]},e.prototype.set=function(a,b,c){return this.data[b*this.size.x+a]=c,this},e.prototype.zeroBorder=function(){var a,b=this.size.x,c=this.size.y,d=this.data;for(a=0;b>a;a++)d[a]=d[(c-1)*b+a]=0;for(a=1;c-1>a;a++)d[a*b]=d[a*b+(b-1)]=0},e.prototype.invert=function(){for(var a=this.data,b=a.length;b--;)a[b]=a[b]?0:1},e.prototype.convolve=function(a){var b,c,d,e,f=a.length/2|0,g=0;for(c=0;c<this.size.y;c++)for(b=0;b<this.size.x;b++){for(g=0,e=-f;f>=e;e++)for(d=-f;f>=d;d++)g+=a[e+f][d+f]*this.getSafe(b+d,c+e);this.data[c*this.size.x+b]=g}},e.prototype.moments=function(a){var b,c,d,e,g,h,i,j,k,l,m,n,o=this.data,p=this.size.y,q=this.size.x,r=[],s=[],t=Math.PI,u=t/4;if(0>=a)return s;for(g=0;a>g;g++)r[g]={m00:0,m01:0,m10:0,m11:0,m02:0,m20:0,theta:0,rad:0};for(c=0;p>c;c++)for(e=c*c,b=0;q>b;b++)d=o[c*q+b],d>0&&(h=r[d-1],h.m00+=1,h.m01+=c,h.m10+=b,h.m11+=b*c,h.m02+=e,h.m20+=b*b);for(g=0;a>g;g++)h=r[g],isNaN(h.m00)||0===h.m00||(l=h.m10/h.m00,m=h.m01/h.m00,i=h.m11/h.m00-l*m,j=h.m02/h.m00-m*m,k=h.m20/h.m00-l*l,n=(j-k)/(2*i),n=.5*Math.atan(n)+(i>=0?u:-u)+t,h.theta=(180*n/t+90)%180-90,h.theta<0&&(h.theta+=180),h.rad=n>t?n-t:n,h.vec=f.clone([Math.cos(n),Math.sin(n)]),s.push(h));return s},e.prototype.show=function(a,b){var c,d,e,f,g,h,i;for(b||(b=1),c=a.getContext("2d"),a.width=this.size.x,a.height=this.size.y,d=c.getImageData(0,0,a.width,a.height),e=d.data,f=0,i=0;i<this.size.y;i++)for(h=0;h<this.size.x;h++)g=i*this.size.x+h,f=this.get(h,i)*b,e[4*g+0]=f,e[4*g+1]=f,e[4*g+2]=f,e[4*g+3]=255;c.putImageData(d,0,0)},e.prototype.overlay=function(a,c,d){(!c||0>c||c>360)&&(c=360);for(var e=[0,1,1],f=[0,0,0],g=[255,255,255],h=[0,0,0],i=[],j=a.getContext("2d"),k=j.getImageData(d.x,d.y,this.size.x,this.size.y),l=k.data,m=this.data.length;m--;)e[0]=this.data[m]*c,i=e[0]<=0?g:e[0]>=360?h:b.hsv2rgb(e,f),l[4*m+0]=i[0],l[4*m+1]=i[1],l[4*m+2]=i[2],l[4*m+3]=255;j.putImageData(k,d.x,d.y)},e}),d("tracer",[],function(){var a={searchDirections:[[0,1],[1,1],[1,0],[1,-1],[0,-1],[-1,-1],[-1,0],[-1,1]],create:function(a,b){function c(a,b,c,d){var e,k,l;for(e=0;7>e;e++){if(k=a.cy+i[a.dir][0],l=a.cx+i[a.dir][1],f=k*j+l,g[f]===b&&(0===h[f]||h[f]===c))return h[f]=c,a.cy=k,a.cx=l,!0;0===h[f]&&(h[f]=d),a.dir=(a.dir+1)%8}return!1}function d(a,b,c){return{dir:c,x:a,y:b,next:null,prev:null}}function e(a,b,e,f,g){var h,i,j,k=null,l={cx:b,cy:a,dir:0};if(c(l,f,e,g)){k=d(b,a,l.dir),h=k,j=l.dir,i=d(l.cx,l.cy,0),i.prev=h,h.next=i,i.next=null,h=i;do l.dir=(l.dir+6)%8,c(l,f,e,g),j!=l.dir?(h.dir=l.dir,i=d(l.cx,l.cy,0),i.prev=h,h.next=i,i.next=null,h=i):(h.dir=j,h.x=l.cx,h.y=l.cy),j=l.dir;while(l.cx!=b||l.cy!=a);k.prev=h.prev,h.prev.next=k}return k}var f,g=a.data,h=b.data,i=this.searchDirections,j=a.size.x;return{trace:function(a,b,d,e){return c(a,b,d,e)},contourTracing:function(a,b,c,d,f){return e(a,b,c,d,f)}}}};return a}),d("rasterizer",["tracer"],function(a){var b={createContour2D:function(){return{dir:null,index:null,firstVertex:null,insideContours:null,nextpeer:null,prevpeer:null}},CONTOUR_DIR:{CW_DIR:0,CCW_DIR:1,UNKNOWN_DIR:2},DIR:{OUTSIDE_EDGE:-32767,INSIDE_EDGE:-32766},create:function(c,d){var e=c.data,f=d.data,g=c.size.x,h=c.size.y,i=a.create(c,d);return{rasterize:function(a){var c,d,j,k,l,m,n,o,p,q,r,s,t=[],u=0;for(s=0;400>s;s++)t[s]=0;for(t[0]=e[0],p=null,m=1;h-1>m;m++)for(k=0,d=t[0],l=1;g-1>l;l++)if(r=m*g+l,0===f[r])if(c=e[r],c!==d){if(0===k)j=u+1,t[j]=c,d=c,n=i.contourTracing(m,l,j,c,b.DIR.OUTSIDE_EDGE),null!==n&&(u++,k=j,o=b.createContour2D(),o.dir=b.CONTOUR_DIR.CW_DIR,o.index=k,o.firstVertex=n,o.nextpeer=p,o.insideContours=null,null!==p&&(p.prevpeer=o),p=o);else if(n=i.contourTracing(m,l,b.DIR.INSIDE_EDGE,c,k),null!==n){for(o=b.createContour2D(),o.firstVertex=n,o.insideContours=null,o.dir=0===a?b.CONTOUR_DIR.CCW_DIR:b.CONTOUR_DIR.CW_DIR,o.index=a,q=p;null!==q&&q.index!==k;)q=q.nextpeer;null!==q&&(o.nextpeer=q.insideContours,null!==q.insideContours&&(q.insideContours.prevpeer=o),q.insideContours=o)}}else f[r]=k;else f[r]===b.DIR.OUTSIDE_EDGE||f[r]===b.DIR.INSIDE_EDGE?(k=0,d=f[r]===b.DIR.INSIDE_EDGE?e[r]:t[0]):(k=f[r],d=t[k]);for(q=p;null!==q;)q.index=a,q=q.nextpeer;return{cc:p,count:u}},debug:{drawContour:function(a,c){var d,e,f,g=a.getContext("2d"),h=c;for(g.strokeStyle="red",g.fillStyle="red",g.lineWidth=1,d=null!==h?h.insideContours:null;null!==h;){switch(null!==d?(e=d,d=d.nextpeer):(e=h,h=h.nextpeer,d=null!==h?h.insideContours:null),e.dir){case b.CONTOUR_DIR.CW_DIR:g.strokeStyle="red";break;case b.CONTOUR_DIR.CCW_DIR:g.strokeStyle="blue";break;case b.CONTOUR_DIR.UNKNOWN_DIR:g.strokeStyle="green"}f=e.firstVertex,g.beginPath(),g.moveTo(f.x,f.y);do f=f.next,g.lineTo(f.x,f.y);while(f!==e.firstVertex);g.stroke()}}}}}};return b}),d("skeletonizer",[],function(){function a(stdlib, foreign, buffer) {"use asm";var images=new stdlib.Uint8Array(buffer),size=foreign.size|0,imul=stdlib.Math.imul;function erode(inImagePtr, outImagePtr) {inImagePtr=inImagePtr|0;outImagePtr=outImagePtr|0;var v=0,u=0,sum=0,yStart1=0,yStart2=0,xStart1=0,xStart2=0,offset=0;for ( v=1; (v|0)<((size - 1)|0); v=(v+1)|0) {offset=(offset+size)|0;for ( u=1; (u|0)<((size - 1)|0); u=(u+1)|0) {yStart1=(offset - size)|0;yStart2=(offset+size)|0;xStart1=(u - 1)|0;xStart2=(u+1)|0;sum=((images[(inImagePtr+yStart1+xStart1)|0]|0)+(images[(inImagePtr+yStart1+xStart2)|0]|0)+(images[(inImagePtr+offset+u)|0]|0)+(images[(inImagePtr+yStart2+xStart1)|0]|0)+(images[(inImagePtr+yStart2+xStart2)|0]|0))|0;if ((sum|0) == (5|0)) {images[(outImagePtr+offset+u)|0]=1;} else {images[(outImagePtr+offset+u)|0]=0;}}}return;}function subtract(aImagePtr, bImagePtr, outImagePtr) {aImagePtr=aImagePtr|0;bImagePtr=bImagePtr|0;outImagePtr=outImagePtr|0;var length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;images[(outImagePtr+length)|0]=((images[(aImagePtr+length)|0]|0) - (images[(bImagePtr+length)|0]|0))|0;}}function bitwiseOr(aImagePtr, bImagePtr, outImagePtr) {aImagePtr=aImagePtr|0;bImagePtr=bImagePtr|0;outImagePtr=outImagePtr|0;var length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;images[(outImagePtr+length)|0]=((images[(aImagePtr+length)|0]|0)|(images[(bImagePtr+length)|0]|0))|0;}}function countNonZero(imagePtr) {imagePtr=imagePtr|0;var sum=0,length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;sum=((sum|0)+(images[(imagePtr+length)|0]|0))|0;}return (sum|0);}function init(imagePtr, value) {imagePtr=imagePtr|0;value=value|0;var length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;images[(imagePtr+length)|0]=value;}}function dilate(inImagePtr, outImagePtr) {inImagePtr=inImagePtr|0;outImagePtr=outImagePtr|0;var v=0,u=0,sum=0,yStart1=0,yStart2=0,xStart1=0,xStart2=0,offset=0;for ( v=1; (v|0)<((size - 1)|0); v=(v+1)|0) {offset=(offset+size)|0;for ( u=1; (u|0)<((size - 1)|0); u=(u+1)|0) {yStart1=(offset - size)|0;yStart2=(offset+size)|0;xStart1=(u - 1)|0;xStart2=(u+1)|0;sum=((images[(inImagePtr+yStart1+xStart1)|0]|0)+(images[(inImagePtr+yStart1+xStart2)|0]|0)+(images[(inImagePtr+offset+u)|0]|0)+(images[(inImagePtr+yStart2+xStart1)|0]|0)+(images[(inImagePtr+yStart2+xStart2)|0]|0))|0;if ((sum|0)>(0|0)) {images[(outImagePtr+offset+u)|0]=1;} else {images[(outImagePtr+offset+u)|0]=0;}}}return;}function memcpy(srcImagePtr, dstImagePtr) {srcImagePtr=srcImagePtr|0;dstImagePtr=dstImagePtr|0;var length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;images[(dstImagePtr+length)|0]=(images[(srcImagePtr+length)|0]|0);}}function zeroBorder(imagePtr) {imagePtr=imagePtr|0;var x=0,y=0;for ( x=0; (x|0)<((size - 1)|0); x=(x+1)|0) {images[(imagePtr+x)|0]=0;images[(imagePtr+y)|0]=0;y=((y+size) - 1)|0;images[(imagePtr+y)|0]=0;y=(y+1)|0;}for ( x=0; (x|0)<(size|0); x=(x+1)|0) {images[(imagePtr+y)|0]=0;y=(y+1)|0;}}function skeletonize() {var subImagePtr=0,erodedImagePtr=0,tempImagePtr=0,skelImagePtr=0,sum=0,done=0;erodedImagePtr=imul(size, size)|0;tempImagePtr=(erodedImagePtr+erodedImagePtr)|0;skelImagePtr=(tempImagePtr+erodedImagePtr)|0;init(skelImagePtr, 0);zeroBorder(subImagePtr);do {erode(subImagePtr, erodedImagePtr);dilate(erodedImagePtr, tempImagePtr);subtract(subImagePtr, tempImagePtr, tempImagePtr);bitwiseOr(skelImagePtr, tempImagePtr, skelImagePtr);memcpy(erodedImagePtr, subImagePtr);sum=countNonZero(subImagePtr)|0;done=((sum|0) == 0|0);} while(!done);}return {skeletonize : skeletonize};}
-return Math.imul=Math.imul||function(a,b){var c=a>>>16&65535,d=65535&a,e=b>>>16&65535,f=65535&b;return d*f+(c*f+d*e<<16>>>0)|0},a}),d("image_debug",[],function(){return{drawRect:function(a,b,c,d){c.strokeStyle=d.color,c.fillStyle=d.color,c.lineWidth=1,c.beginPath(),c.strokeRect(a.x,a.y,b.x,b.y)},drawPath:function(a,b,c,d){c.strokeStyle=d.color,c.fillStyle=d.color,c.lineWidth=d.lineWidth,c.beginPath(),c.moveTo(a[0][b.x],a[0][b.y]);for(var e=1;e<a.length;e++)c.lineTo(a[e][b.x],a[e][b.y]);c.closePath(),c.stroke()}}}),d("barcode_locator",["image_wrapper","cv_utils","rasterizer","tracer","skeletonizer","array_helper","image_debug","gl-matrix"],function(a,b,c,d,e,f,g,h){function i(){var c;u=t.halfSample?new a({x:D.size.x/2|0,y:D.size.y/2|0}):D,C=b.calculatePatchSize(t.patchSize,u.size),G.x=u.size.x/C.x|0,G.y=u.size.y/C.y|0,B=new a(u.size,void 0,Uint8Array,!1),x=new a(C,void 0,Array,!0),c=new ArrayBuffer(65536),w=new a(C,new Uint8Array(c,0,C.x*C.y)),v=new a(C,new Uint8Array(c,C.x*C.y*3,C.x*C.y),void 0,!0),E=e(J,{size:C.x},c),A=new a({x:u.size.x/w.size.x|0,y:u.size.y/w.size.y|0},void 0,Array,!0),y=new a(A.size,void 0,void 0,!0),z=new a(A.size,void 0,Int32Array,!0)}function j(){t.useWorker||"undefined"==typeof document||(F.dom.binary=document.createElement("canvas"),F.dom.binary.className="binaryBuffer",t.showCanvas===!0&&document.querySelector("#debug").appendChild(F.dom.binary),F.ctx.binary=F.dom.binary.getContext("2d"),F.dom.binary.width=B.size.x,F.dom.binary.height=B.size.y)}function k(a){var b,c,d,e,f,h,i,j=B.size.x,k=B.size.y,l=-B.size.x,m=-B.size.y;for(b=0,c=0;c<a.length;c++)e=a[c],b+=e.rad,t.showPatches&&g.drawRect(e.pos,w.size,F.ctx.binary,{color:"red"});for(b/=a.length,b=(180*b/Math.PI+90)%180-90,0>b&&(b+=180),b=(180-b)*Math.PI/180,f=I.clone([Math.cos(b),Math.sin(b),-Math.sin(b),Math.cos(b)]),c=0;c<a.length;c++){for(e=a[c],d=0;4>d;d++)H.transformMat2(e.box[d],e.box[d],f);t.boxFromPatches.showTransformed&&g.drawPath(e.box,{x:0,y:1},F.ctx.binary,{color:"#99ff00",lineWidth:2})}for(c=0;c<a.length;c++)for(e=a[c],d=0;4>d;d++)e.box[d][0]<j&&(j=e.box[d][0]),e.box[d][0]>l&&(l=e.box[d][0]),e.box[d][1]<k&&(k=e.box[d][1]),e.box[d][1]>m&&(m=e.box[d][1]);for(h=[[j,k],[l,k],[l,m],[j,m]],t.boxFromPatches.showTransformedBox&&g.drawPath(h,{x:0,y:1},F.ctx.binary,{color:"#ff0000",lineWidth:2}),i=t.halfSample?2:1,f=I.invert(f,f),d=0;4>d;d++)H.transformMat2(h[d],h[d],f);for(t.boxFromPatches.showBB&&g.drawPath(h,{x:0,y:1},F.ctx.binary,{color:"#ff0000",lineWidth:2}),d=0;4>d;d++)H.scale(h[d],h[d],i);return h}function l(){b.otsuThreshold(u,B),B.zeroBorder(),t.showCanvas&&B.show(F.dom.binary,255)}function m(){var a,b,d,e,h,i,j,k,l=[];for(a=0;a<G.x;a++)for(b=0;b<G.y;b++)d=w.size.x*a,e=w.size.y*b,q(d,e),v.zeroBorder(),f.init(x.data,0),i=c.create(v,x),j=i.rasterize(0),t.showLabels&&x.overlay(F.dom.binary,Math.floor(360/j.count),{x:d,y:e}),h=x.moments(j.count),l=l.concat(r(h,[a,b],d,e));if(t.showFoundPatches)for(a=0;a<l.length;a++)k=l[a],g.drawRect(k.pos,w.size,F.ctx.binary,{color:"#99ff00",lineWidth:2});return l}function n(a){var b,c,d=[],e=[];for(b=0;a>b;b++)d.push(0);for(c=z.data.length;c--;)z.data[c]>0&&d[z.data[c]-1]++;return d=d.map(function(a,b){return{val:a,label:b+1}}),d.sort(function(a,b){return b.val-a.val}),e=d.filter(function(a){return a.val>=5})}function o(a,c){var d,e,f,h,i,j=[],l=[],m=[0,1,1],n=[0,0,0];for(d=0;d<a.length;d++){for(f=z.data.length,j.length=0;f--;)z.data[f]===a[d].label&&(h=A.data[f],j.push(h));if(i=k(j),i&&(l.push(i),t.showRemainingPatchLabels))for(e=0;e<j.length;e++)h=j[e],m[0]=a[d].label/(c+1)*360,b.hsv2rgb(m,n),g.drawRect(h.pos,w.size,F.ctx.binary,{color:"rgb("+n.join(",")+")",lineWidth:2})}return l}function p(a){var c=b.cluster(a,.9),d=b.topGeneric(c,1,function(a){return a.getPoints().length}),e=[],f=[];if(1===d.length){e=d[0].item.getPoints();for(var g=0;g<e.length;g++)f.push(e[g].point)}return f}function q(a,c){B.subImageAsCopy(w,b.imageRef(a,c)),E.skeletonize(),t.showSkeleton&&v.overlay(F.dom.binary,360,b.imageRef(a,c))}function r(a,b,c,d){var e,f,g,h,i=0,j=[],k=[],l=Math.ceil(C.x/3);if(a.length>=2){for(e=0;e<a.length;e++)a[e].m00>l&&j.push(a[e]);if(j.length>=2){for(i=j.length,g=p(j),f=0,e=0;e<g.length;e++)f+=g[e].rad;g.length>1&&g.length>=j.length/4*3&&g.length>a.length/4&&(f/=g.length,h={index:b[1]*G.x+b[0],pos:{x:c,y:d},box:[H.clone([c,d]),H.clone([c+w.size.x,d]),H.clone([c+w.size.x,d+w.size.y]),H.clone([c,d+w.size.y])],moments:g,rad:f,vec:H.clone([Math.cos(f),Math.sin(f)])},k.push(h))}}return k}function s(a){function c(){var a;for(a=0;a<z.data.length;a++)if(0===z.data[a]&&1===y.data[a])return a;return z.length}function e(a){var b,c,f,g,h,i,l,m={x:a%z.size.x,y:a/z.size.x|0};if(a<z.data.length)for(f=A.data[a],z.data[a]=j,i=0;i<d.searchDirections.length;i++)c=m.y+d.searchDirections[i][0],b=m.x+d.searchDirections[i][1],h=c*z.size.x+b,0!==y.data[h]?(g=A.data[h],0===z.data[h]&&(l=Math.abs(H.dot(g.vec,f.vec)),l>k&&e(h))):z.data[h]=Number.MAX_VALUE}var h,i,j=0,k=.95,l=0,m=[0,1,1],n=[0,0,0];for(f.init(y.data,0),f.init(z.data,0),f.init(A.data,null),h=0;h<a.length;h++)i=a[h],A.data[i.index]=i,y.data[i.index]=1;for(y.zeroBorder();(l=c())<z.data.length;)j++,e(l);if(t.showPatchLabels)for(h=0;h<z.data.length;h++)z.data[h]>0&&z.data[h]<=j&&(i=A.data[h],m[0]=z.data[h]/(j+1)*360,b.hsv2rgb(m,n),g.drawRect(i.pos,w.size,F.ctx.binary,{color:"rgb("+n.join(",")+")",lineWidth:2}));return j}var t,u,v,w,x,y,z,A,B,C,D,E,F={ctx:{binary:null},dom:{binary:null}},G={x:0,y:0},H=h.vec2,I=h.mat2,J=this;return{init:function(a,b){t=b,D=a,i(),j()},locate:function(){var a,c=[],d=[];if(t.halfSample&&b.halfSample(D,u),l(),a=m(),a.length<G.x*G.y*.05)return null;var e=s(a);return 1>e?null:(c=n(e),0===c.length?null:d=o(c,e))}}}),d("bresenham",["cv_utils","image_wrapper"],function(a,b){var c={},d={DIR:{UP:1,DOWN:-1}};return c.getBarcodeLine=function(a,b,c){function d(a,b){l=s[b*t+a],u+=l,v=v>l?l:v,w=l>w?l:w,r.push(l)}var e,f,g,h,i,j,k,l,m=0|b.x,n=0|b.y,o=0|c.x,p=0|c.y,q=Math.abs(p-n)>Math.abs(o-m),r=[],s=a.data,t=a.size.x,u=0,v=255,w=0;for(q&&(j=m,m=n,n=j,j=o,o=p,p=j),m>o&&(j=m,m=o,o=j,j=n,n=p,p=j),e=o-m,f=Math.abs(p-n),g=e/2|0,i=n,h=p>n?1:-1,k=m;o>k;k++)q?d(i,k):d(k,i),g-=f,0>g&&(i+=h,g+=e);return{line:r,min:v,max:w}},c.toOtsuBinaryLine=function(c){var d=c.line,e=new b({x:d.length-1,y:1},d),f=a.determineOtsuThreshold(e,5);return d=a.sharpenLine(d),a.thresholdImage(e,f),{line:d,threshold:f}},c.toBinaryLine=function(a){var b,c,e,f,g,h=a.min,i=a.max,j=a.line,k=h+(i-h)/2,l=[],m=(i-h)/12,n=-m;for(c=j[0]>k?d.DIR.UP:d.DIR.DOWN,l.push({pos:0,val:j[0]}),f=0;f<j.length-1;f++)b=j[f+1]-j[f],e=n>b&&j[f+1]<1.5*k?d.DIR.DOWN:b>m&&j[f+1]>.5*k?d.DIR.UP:c,c!==e&&(l.push({pos:f,val:j[f]}),c=e);for(l.push({pos:j.length,val:j[j.length-1]}),g=l[0].pos;g<l[1].pos;g++)j[g]=j[g]>k?0:1;for(f=1;f<l.length-1;f++)for(m=l[f+1].val>l[f].val?l[f].val+(l[f+1].val-l[f].val)/3*2|0:l[f+1].val+(l[f].val-l[f+1].val)/3|0,g=l[f].pos;g<l[f+1].pos;g++)j[g]=j[g]>m?0:1;return{line:j,threshold:m}},c.debug={printFrequency:function(a,b){var c,d=b.getContext("2d");for(b.width=a.length,b.height=256,d.beginPath(),d.strokeStyle="blue",c=0;c<a.length;c++)d.moveTo(c,255),d.lineTo(c,255-a[c]);d.stroke(),d.closePath()},printPattern:function(a,b){var c,d=b.getContext("2d");for(b.width=a.length,d.fillColor="black",c=0;c<a.length;c++)1===a[c]&&d.fillRect(c,0,1,100)}},c}),d("code_39_reader",["./barcode_reader","./array_helper"],function(a,b){function c(){a.call(this)}var d={ALPHABETH_STRING:{value:"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%"},ALPHABET:{value:[48,49,50,51,52,53,54,55,56,57,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,45,46,32,42,36,47,43,37]},CHARACTER_ENCODINGS:{value:[52,289,97,352,49,304,112,37,292,100,265,73,328,25,280,88,13,268,76,28,259,67,322,19,274,82,7,262,70,22,385,193,448,145,400,208,133,388,196,148,168,162,138,42]},ASTERISK:{value:148}};return c.prototype=Object.create(a.prototype,d),c.prototype.constructor=c,c.prototype._toCounters=function(a,c){var d,e=this,f=c.length,g=e._row.length,h=!e._row[a],i=0;for(b.init(c,0),d=a;g>d;d++)if(e._row[d]^h)c[i]++;else{if(i++,i===f)break;c[i]=1,h=!h}return c},c.prototype._decode=function(){var a,c,d,e,f=this,g=[0,0,0,0,0,0,0,0,0],h=[],i=f._findStart();if(!i)return null;e=f._nextSet(f._row,i.end);do{if(g=f._toCounters(e,g),d=f._toPattern(g),0>d)return null;if(a=f._patternToChar(d),0>a)return null;h.push(a),c=e,e+=b.sum(g),e=f._nextSet(f._row,e)}while("*"!==a);return h.pop(),{code:h.join(""),start:i.start,end:e,startInfo:i,decodedCodes:h}},c.prototype._patternToChar=function(a){var b,c=this;for(b=0;b<c.CHARACTER_ENCODINGS.length;b++)if(c.CHARACTER_ENCODINGS[b]===a)return String.fromCharCode(c.ALPHABET[b])},c.prototype._findNextWidth=function(a,b){var c,d=Number.MAX_VALUE;for(c=0;c<a.length;c++)a[c]<d&&a[c]>b&&(d=a[c]);return d},c.prototype._toPattern=function(a){for(var b,c,d=a.length,e=0,f=d,g=0,h=this;f>3;){for(e=h._findNextWidth(a,e),f=0,b=0,c=0;d>c;c++)a[c]>e&&(b|=1<<d-1-c,f++,g+=a[c]);if(3===f){for(c=0;d>c&&f>0;c++)if(a[c]>e&&(f--,2*a[c]>=g))return-1;return b}}return-1},c.prototype._findStart=function(){var a,b,c,d=this,e=d._nextSet(d._row),f=e,g=[0,0,0,0,0,0,0,0,0],h=0,i=!1;for(a=e;a<d._row.length;a++)if(d._row[a]^i)g[h]++;else{if(h===g.length-1){if(d._toPattern(g)===d.ASTERISK&&(c=Math.floor(Math.max(0,f-(a-f)/4)),d._matchRange(c,f,0)))return{start:f,end:a};for(f+=g[0]+g[1],b=0;7>b;b++)g[b]=g[b+2];g[7]=0,g[8]=0,h--}else h++;g[h]=1,i=!i}return null},c}),d("code_39_vin_reader",["./code_39_reader"],function(a){function b(){a.call(this)}var c={IOQ:/[IOQ]/g,AZ09:/[A-Z0-9]{17}/};return b.prototype=Object.create(a.prototype),b.prototype.constructor=b,b.prototype._decode=function(){var b=a.prototype._decode.apply(this);if(!b)return null;var d=b.code;if(d)return d=d.replace(c.IOQ,""),d.match(c.AZ09)?this._checkChecksum(d)?(b.code=d,b):null:(console.log("Failed AZ09 pattern code:",d),null)},b.prototype._checkChecksum=function(a){return!!a},b}),d("codabar_reader",["./barcode_reader"],function(a){function b(){a.call(this),this._counters=[]}var c={ALPHABETH_STRING:{value:"0123456789-$:/.+ABCD"},ALPHABET:{value:[48,49,50,51,52,53,54,55,56,57,45,36,58,47,46,43,65,66,67,68]},CHARACTER_ENCODINGS:{value:[3,6,9,96,18,66,33,36,48,72,12,24,69,81,84,21,26,41,11,14]},START_END:{value:[26,41,11,14]},MIN_ENCODED_CHARS:{value:4},MAX_ACCEPTABLE:{value:2},PADDING:{value:1.5}};return b.prototype=Object.create(a.prototype,c),b.prototype.constructor=b,b.prototype._decode=function(){var a,b,c,d,e,f=this,g=[];if(f._fillCounters(),a=f._findStart(),!a)return null;d=a.startCounter;do{if(c=f._toPattern(d),0>c)return null;if(b=f._patternToChar(c),0>b)return null;if(g.push(b),d+=8,g.length>1&&f._isStartEnd(c))break}while(d<f._counters.length);return g.length-2<f.MIN_ENCODED_CHARS||!f._isStartEnd(c)?null:f._verifyWhitespace(a.startCounter,d-8)&&f._validateResult(g,a.startCounter)?(d=d>f._counters.length?f._counters.length:d,e=a.start+f._sumCounters(a.startCounter,d-8),{code:g.join(""),start:a.start,end:e,startInfo:a,decodedCodes:g}):null},b.prototype._verifyWhitespace=function(a,b){return(0>=a-1||this._counters[a-1]>=this._calculatePatternLength(a)/2)&&(b+8>=this._counters.length||this._counters[b+7]>=this._calculatePatternLength(b)/2)?!0:!1},b.prototype._calculatePatternLength=function(a){var b,c=0;for(b=a;a+7>b;b++)c+=this._counters[b];return c},b.prototype._thresholdResultPattern=function(a,b){var c,d,e,f,g,h=this,i={space:{narrow:{size:0,counts:0,min:0,max:Number.MAX_VALUE},wide:{size:0,counts:0,min:0,max:Number.MAX_VALUE}},bar:{narrow:{size:0,counts:0,min:0,max:Number.MAX_VALUE},wide:{size:0,counts:0,min:0,max:Number.MAX_VALUE}}},j=b;for(e=0;e<a.length;e++){for(g=h._charToPattern(a[e]),f=6;f>=0;f--)c=2===(1&f)?i.bar:i.space,d=1===(1&g)?c.wide:c.narrow,d.size+=h._counters[j+f],d.counts++,g>>=1;j+=8}return["space","bar"].forEach(function(a){var b=i[a];b.wide.min=Math.floor((b.narrow.size/b.narrow.counts+b.wide.size/b.wide.counts)/2),b.narrow.max=Math.ceil(b.wide.min),b.wide.max=Math.ceil((b.wide.size*h.MAX_ACCEPTABLE+h.PADDING)/b.wide.counts)}),i},b.prototype._charToPattern=function(a){var b,c=this,d=a.charCodeAt(0);for(b=0;b<c.ALPHABET.length;b++)if(c.ALPHABET[b]===d)return c.CHARACTER_ENCODINGS[b];return 0},b.prototype._validateResult=function(a,b){var c,d,e,f,g,h,i=this,j=i._thresholdResultPattern(a,b),k=b;for(c=0;c<a.length;c++){for(h=i._charToPattern(a[c]),d=6;d>=0;d--){if(e=0===(1&d)?j.bar:j.space,f=1===(1&h)?e.wide:e.narrow,g=i._counters[k+d],g<f.min||g>f.max)return!1;h>>=1}k+=8}return!0},b.prototype._fillCounters=function(){var a,b=this,c=0,d=!0,e=b._nextUnset(b._row);for(b._counters.length=0,b._counters[c]=0,a=e;a<b._row.length;a++)b._row[a]^d?this._counters[c]++:(c++,this._counters[c]=1,d=!d)},b.prototype._patternToChar=function(a){var b,c=this;for(b=0;b<c.CHARACTER_ENCODINGS.length;b++)if(c.CHARACTER_ENCODINGS[b]===a)return String.fromCharCode(c.ALPHABET[b]);return-1},b.prototype._computeAlternatingThreshold=function(a,b){var c,d,e=Number.MAX_VALUE,f=0;for(c=a;b>c;c+=2)d=this._counters[c],d>f&&(f=d),e>d&&(e=d);return(e+f)/2|0},b.prototype._toPattern=function(a){var b,c,d,e,f=7,g=a+f,h=1<<f-1,i=0;if(g>this._counters.length)return-1;for(b=this._computeAlternatingThreshold(a,g),c=this._computeAlternatingThreshold(a+1,g),d=0;f>d;d++)e=0===(1&d)?b:c,this._counters[a+d]>e&&(i|=h),h>>=1;return i},b.prototype._isStartEnd=function(a){var b;for(b=0;b<this.START_END.length;b++)if(this.START_END[b]===a)return!0;return!1},b.prototype._sumCounters=function(a,b){var c,d=0;for(c=a;b>c;c++)d+=this._counters[c];return d},b.prototype._findStart=function(){var a,b,c,d=this,e=d._nextUnset(d._row);for(a=1;a<this._counters.length;a++)if(b=d._toPattern(a),-1!==b&&d._isStartEnd(b))return e+=d._sumCounters(0,a),c=e+d._sumCounters(a,a+8),{start:e,end:c,startCounter:a,endCounter:a+8}},b}),d("upc_reader",["./ean_reader"],function(a){function b(){a.call(this)}return b.prototype=Object.create(a.prototype),b.prototype.constructor=b,b.prototype._decode=function(){var b=a.prototype._decode.call(this);return b&&b.code&&13===b.code.length&&"0"===b.code.charAt(0)?(b.code=b.code.substring(1),b):null},b}),d("ean_8_reader",["./ean_reader"],function(a){function b(){a.call(this)}return b.prototype=Object.create(a.prototype),b.prototype.constructor=b,b.prototype._decodePayload=function(a,b,c){var d,e=this;for(d=0;4>d;d++){if(a=e._decodeCode(a.end,e.CODE_G_START),!a)return null;b.push(a.code),c.push(a)}if(a=e._findPattern(e.MIDDLE_PATTERN,a.end,!0),null===a)return null;for(c.push(a),d=0;4>d;d++){if(a=e._decodeCode(a.end,e.CODE_G_START),!a)return null;c.push(a),b.push(a.code)}return a},b}),d("upc_e_reader",["./ean_reader"],function(a){function b(){a.call(this)}var c={CODE_FREQUENCY:{value:[[56,52,50,49,44,38,35,42,41,37],[7,11,13,14,19,25,28,21,22,26]]},STOP_PATTERN:{value:[1/6*7,1/6*7,1/6*7,1/6*7,1/6*7,1/6*7]}};return b.prototype=Object.create(a.prototype,c),b.prototype.constructor=b,b.prototype._decodePayload=function(a,b,c){var d,e=this,f=0;for(d=0;6>d;d++){if(a=e._decodeCode(a.end),!a)return null;a.code>=e.CODE_G_START?(a.code=a.code-e.CODE_G_START,f|=1<<5-d):f|=0<<5-d,b.push(a.code),c.push(a)}return e._determineParity(f,b),a},b.prototype._determineParity=function(a,b){var c,d,e=this;for(d=0;d<e.CODE_FREQUENCY.length;d++)for(c=0;c<e.CODE_FREQUENCY[d].length;c++)if(a===e.CODE_FREQUENCY[d][c])return b.unshift(d),void b.push(c)},b.prototype._convertToUPCA=function(a){var b=[a[0]],c=a[a.length-2];return b=2>=c?b.concat(a.slice(1,3)).concat([c,0,0,0,0]).concat(a.slice(3,6)):3===c?b.concat(a.slice(1,4)).concat([0,0,0,0,0]).concat(a.slice(4,6)):4===c?b.concat(a.slice(1,5)).concat([0,0,0,0,0,a[5]]):b.concat(a.slice(1,6)).concat([0,0,0,0,c]),b.push(a[a.length-1]),b},b.prototype._checksum=function(b){return a.prototype._checksum.call(this,this._convertToUPCA(b))},b.prototype._findEnd=function(b,c){return c=!0,a.prototype._findEnd.call(this,b,c)},b.prototype._verifyTrailingWhitespace=function(a){var b,c=this;return b=a.end+(a.end-a.start)/2,b<c._row.length&&c._matchRange(a.end,b,0)?a:void 0},b}),d("barcode_decoder",["bresenham","image_debug","code_128_reader","ean_reader","code_39_reader","code_39_vin_reader","codabar_reader","upc_reader","ean_8_reader","upc_e_reader"],function(a,b,c,d,e,f,g,h,i,j){var k={code_128_reader:c,ean_reader:d,ean_8_reader:i,code_39_reader:e,code_39_vin_reader:f,codabar_reader:g,upc_reader:h,upc_e_reader:j},l={create:function(c,d){function e(){if("undefined"!=typeof document){var a=document.querySelector("#debug.detection");o.dom.frequency=document.querySelector("canvas.frequency"),o.dom.frequency||(o.dom.frequency=document.createElement("canvas"),o.dom.frequency.className="frequency",a&&a.appendChild(o.dom.frequency)),o.ctx.frequency=o.dom.frequency.getContext("2d"),o.dom.pattern=document.querySelector("canvas.patternBuffer"),o.dom.pattern||(o.dom.pattern=document.createElement("canvas"),o.dom.pattern.className="patternBuffer",a&&a.appendChild(o.dom.pattern)),o.ctx.pattern=o.dom.pattern.getContext("2d"),o.dom.overlay=document.querySelector("canvas.drawingBuffer"),o.dom.overlay&&(o.ctx.overlay=o.dom.overlay.getContext("2d"))}}function f(){var a;for(a=0;a<c.readers.length;a++)console.log(c.readers[a]),p.push(new k[c.readers[a]])}function g(){if("undefined"!=typeof document){var a,b=[{node:o.dom.frequency,prop:c.showFrequency},{node:o.dom.pattern,prop:c.showPattern}];for(a=0;a<b.length;a++)b[a].node.style.display=b[a].prop===!0?"block":"none"}}function h(a,b,c){function e(c){var d={y:c*Math.sin(b),x:c*Math.cos(b)};a[0].y-=d.y,a[0].x-=d.x,a[1].y+=d.y,a[1].x+=d.x}for(e(c);c>1&&!d.inImageWithBorder(a[0],0)||!d.inImageWithBorder(a[1],0);)c-=Math.floor(c/2),e(-c);return 1>=c?null:a}function i(a){return[{x:(a[1][0]-a[0][0])/2+a[0][0],y:(a[1][1]-a[0][1])/2+a[0][1]},{x:(a[3][0]-a[2][0])/2+a[2][0],y:(a[3][1]-a[2][1])/2+a[2][1]}]}function j(e){var f,g=null,h=a.getBarcodeLine(d,e[0],e[1]);for(c.showFrequency&&(b.drawPath(e,{x:"x",y:"y"},o.ctx.overlay,{color:"red",lineWidth:3}),a.debug.printFrequency(h.line,o.dom.frequency)),a.toBinaryLine(h),c.showPattern&&a.debug.printPattern(h.line,o.dom.pattern),f=0;f<p.length&&null===g;f++)g=p[f].decodePattern(h.line),null!==g&&(q=p[f]);return null===g?null:{codeResult:g,barcodeLine:h}}function l(a,b,c){var d,e,f,g=Math.sqrt(Math.pow(a[1][0]-a[0][0],2)+Math.pow(a[1][1]-a[0][1],2)),h=16,i=null,k=Math.sin(c),l=Math.cos(c);for(d=1;h>d&&null===i;d++)e=g/h*d*(d%2===0?-1:1),f={y:e*k,x:e*l},b[0].y+=f.x,b[0].x-=f.y,b[1].y+=f.x,b[1].x-=f.y,i=j(b);return i}function m(a){return Math.sqrt(Math.pow(Math.abs(a[1].y-a[0].y),2)+Math.pow(Math.abs(a[1].x-a[0].x),2))}function n(a){var d,e,f,g,k=o.ctx.overlay;return c.drawBoundingBox&&k&&b.drawPath(a,{x:0,y:1},k,{color:"blue",lineWidth:2}),d=i(a),g=m(d),e=Math.atan2(d[1].y-d[0].y,d[1].x-d[0].x),d=h(d,e,Math.floor(.1*g)),null===d?null:(f=j(d),null===f&&(f=l(a,d,e)),null===f?null:(f&&c.drawScanline&&k&&b.drawPath(d,{x:"x",y:"y"},k,{color:"red",lineWidth:3}),{codeResult:f.codeResult,line:d,angle:e,pattern:f.barcodeLine.line,threshold:f.barcodeLine.threshold}))}var o={ctx:{frequency:null,pattern:null,overlay:null},dom:{frequency:null,pattern:null,overlay:null}},p=[],q=null;return e(),f(),g(),{decodeFromBoundingBox:function(a){return n(a)},decodeFromBoundingBoxes:function(a){var b,c;for(b=0;b<a.length;b++)if(c=n(a[b]),c&&c.codeResult)return c.box=a[b],c},setReaders:function(a){c.readers=a,p.length=0,f()}}}};return l}),d("frame_grabber",["cv_utils"],function(a){var b={};return b.create=function(b,c){var d,e,f,g,h={},i=b.getConfig(),j=a.imageRef(b.getRealWidth(),b.getRealHeight()),k=i.size?a.imageRef(b.getWidth(),b.getHeight()):j,l=0,m=0,n=0,o=0,p=null,q=null,r=null;return d=j.x,e=k.x,f=j.y,g=k.y,p=c?c:document.createElement("canvas"),p.width=k.x,p.height=k.y,q=p.getContext("2d"),r=new Uint8Array(k.x*k.y),h.attachData=function(a){r=a},h.getData=function(){return r},h.grab=function(){var c,h=i.halfSample,j=b.getFrame();return j?(q.drawImage(j,l,m,d,f,n,o,e,g),c=q.getImageData(0,0,k.x,k.y).data,h?a.grayAndHalfSampleFromCanvasData(c,k,r):a.computeGray(c,r),!0):!1},h.getSize=function(){return k},h},b}),d("html_utils",[],function(){function a(a){var b=document.createElement("div");for(b.innerHTML=a;b.firstChild;)return b.firstChild}function b(a,c){for(var d in c)try{a[d]=c[d].constructor==Object?b(a[d],c[d]):c[d]}catch(e){a[d]=c[d]}return a}return{createNode:function(b){return a(b)},mergeObjects:function(a,c){return b(a,c)}}}),d("config",[],function(){var a={inputStream:{name:"Live",type:"LiveStream",constraints:{width:640,height:480,minAspectRatio:0,maxAspectRatio:100,facing:"environment"}},tracking:!1,debug:!1,controls:!1,locate:!0,numOfWorkers:4,visual:{show:!0},decoder:{drawBoundingBox:!1,showFrequency:!1,drawScanline:!1,showPattern:!1,readers:["code_128_reader"]},locator:{halfSample:!0,patchSize:"medium",showCanvas:!1,showPatches:!1,showFoundPatches:!1,showSkeleton:!1,showLabels:!1,showPatchLabels:!1,showRemainingPatchLabels:!1,boxFromPatches:{showTransformed:!1,showTransformedBox:!1,showBB:!1}}};return a}),d("events",[],function(){var a=function(){function a(a){return e[a]||(e[a]={subscribers:[]}),e[a]}function b(){e={}}function c(a,b){a.async?setTimeout(function(){a.callback(b)},4):a.callback(b)}function d(b,c,d){var e;if("function"==typeof c)e={callback:c,async:d};else if(e=c,!e.callback)throw"Callback was not specified on options";a(b).subscribers.push(e)}var e={};return{subscribe:function(a,b,c){return d(a,b,c)},publish:function(b,d){var e=a(b),f=e.subscribers;e.subscribers=f.filter(function(a){return c(a,d),!a.once})},once:function(a,b,c){d(a,{callback:b,async:c,once:!0})},unsubscribe:function(c,d){var e;c?(e=a(c),e.subscribers=e&&d?e.subscribers.filter(function(a){return a.callback!==d}):[]):b()}}}();return a}),d("camera_access",["html_utils"],function(a){function b(a,b,c){navigator.getUserMedia(a,function(a){g=a;var c=window.URL&&window.URL.createObjectURL(a)||a;b.apply(null,[c])},c)}function c(a,b){function c(){d>0?a.videoWidth>0&&a.videoHeight>0?(console.log(a.videoWidth+"px x "+a.videoHeight+"px"),b()):window.setTimeout(c,500):b("Unable to play video stream. Is webcam working?"),d--}var d=10;c()}function d(a,d,e){b(a,function(a){d.src=a,h&&d.removeEventListener("loadeddata",h,!1),h=c.bind(null,d,e),d.addEventListener("loadeddata",h,!1),d.play()},function(a){console.log(a)})}function e(b,c){var d={audio:!1,video:!0},e=a.mergeObjects({width:640,height:480,minAspectRatio:0,maxAspectRatio:100,facing:"environment"},b);return"undefined"==typeof MediaStreamTrack.getSources?(d.video={mediaSource:"camera",width:{min:e.width,max:e.width},height:{min:e.height,max:e.height},require:["width","height"]},c(d)):void MediaStreamTrack.getSources(function(a){for(var b,f=0;f!=a.length;++f){var g=a[f];"video"==g.kind&&g.facing==e.facing&&(b=g.id)}return d.video={mandatory:{minWidth:e.width,minHeight:e.height,minAspectRatio:e.minAspectRatio,maxAspectRatio:e.maxAspectRatio},optional:[{sourceId:b}]},c(d)})}function f(a,b,c){e(b,function(b){d(b,a,c)})}var g,h;return{request:function(a,b,c){f(a,b,c)},release:function(){var a=g&&g.getVideoTracks();a.length&&a[0].stop(),g=null}}}),d("quagga",["code_128_reader","ean_reader","input_stream","image_wrapper","barcode_locator","barcode_decoder","frame_grabber","html_utils","config","events","camera_access","image_debug","cv_utils","gl-matrix"],function(b,c,d,e,f,g,h,i,j,k,l,m,n,o){function p(a){w(a),L=g.create(j.decoder,J)}function q(){if("undefined"!=typeof document)for(var a=[{node:document.querySelector("div[data-controls]"),prop:j.controls},{node:M.dom.overlay,prop:j.visual.show}],b=0;b<a.length;b++)a[b].node&&(a[b].node.style.display=a[b].prop===!0?"block":"none")}function r(a){var b;if("VideoStream"==j.inputStream.type)b=document.createElement("video"),G=d.createVideoStream(b);else if("ImageStream"==j.inputStream.type)G=d.createImageStream();else if("LiveStream"==j.inputStream.type){var c=document.querySelector("#interactive.viewport");c&&(b=c.querySelector("video"),b||(b=document.createElement("video"),c.appendChild(b))),G=d.createLiveStream(b),l.request(b,j.inputStream.constraints,function(a){a?console.log(a):G.trigger("canrecord")})}G.setAttribute("preload","auto"),G.setAttribute("autoplay",!0),G.setInputStream(j.inputStream),G.addEventListener("canrecord",t.bind(void 0,a))}function s(){var a,b=G.getWidth(),c=G.getHeight(),d=j.locator.halfSample?.5:1,e={x:Math.floor(b*d),y:Math.floor(c*d)};if(j.locate){try{console.log(e),a=n.calculatePatchSize(j.locator.patchSize,e)}catch(f){f instanceof n.AdjustToSizeError&&(G.setWidth(Math.floor(Math.floor(e.x/f.patchSize.x)*(1/d)*f.patchSize.x)),G.setHeight(Math.floor(Math.floor(e.y/f.patchSize.y)*(1/d)*f.patchSize.y)),a=f.patchSize)}if(console.log("Patch-Size: "+JSON.stringify(a)),G.getWidth()%a.x===0&&G.getHeight()%a.y===0)return!0}throw new Error("Image dimensions do not comply with the current settings: Width ("+b+" )and height ("+c+") must a multiple of "+a.x)}function t(a){s(),v(),H=h.create(G,M.dom.image),q(),j.numOfWorkers>0?B(function(){console.log("Workers created"),u(a)}):(p(),u(a))}function u(a){G.play(),a()}function v(){if("undefined"!=typeof document){var a=document.querySelector("#interactive.viewport");if(M.dom.image=document.querySelector("canvas.imgBuffer"),M.dom.image||(M.dom.image=document.createElement("canvas"),M.dom.image.className="imgBuffer",a&&"ImageStream"==j.inputStream.type&&a.appendChild(M.dom.image)),M.ctx.image=M.dom.image.getContext("2d"),M.dom.image.width=G.getWidth(),M.dom.image.height=G.getHeight(),M.dom.overlay=document.querySelector("canvas.drawingBuffer"),!M.dom.overlay){M.dom.overlay=document.createElement("canvas"),M.dom.overlay.className="drawingBuffer",a&&a.appendChild(M.dom.overlay);var b=document.createElement("br");b.setAttribute("clear","all"),a&&a.appendChild(b)}M.ctx.overlay=M.dom.overlay.getContext("2d"),M.dom.overlay.width=G.getWidth(),M.dom.overlay.height=G.getHeight()}}function w(a){J=a?a:new e({x:G.getWidth(),y:G.getHeight()}),console.log(J.size),K=[P.clone([20,J.size.y/2-100]),P.clone([20,J.size.y/2+100]),P.clone([J.size.x-20,J.size.y/2+100]),P.clone([J.size.x-20,J.size.y/2-100])],f.init(J,j.locator)}function x(){return j.locate?f.locate():[K]}function y(){var a,b;b=x(),b?(a=L.decodeFromBoundingBoxes(b),a=a||{},a.boxes=b,k.publish("processed",a),a&&a.codeResult&&k.publish("detected",a)):k.publish("processed")}function z(){var a;if(O){if(N.length>0){if(a=N.filter(function(a){return!a.busy})[0],!a)return;H.attachData(a.imageData)}else H.attachData(J.data);H.grab()&&(a?(a.busy=!0,a.worker.postMessage({cmd:"process",imageData:a.imageData},[a.imageData.buffer])):y())}else y()}function A(){I=!1,function a(){I||(z(),O&&"LiveStream"==j.inputStream.type&&window.requestAnimFrame(a))}()}function B(a){function b(b){N.push(b),N.length>=j.numOfWorkers&&a()}var c;for(N=[],c=0;c<j.numOfWorkers;c++)C(b)}function C(a){var b,c={worker:null,imageData:new Uint8Array(G.getWidth()*G.getHeight()),busy:!0};b=E(),c.worker=new Worker(b),URL.revokeObjectURL(b),c.worker.onmessage=function(b){return"initialized"===b.data.event?(c.busy=!1,c.imageData=new Uint8Array(b.data.imageData),console.log("Worker initialized"),a(c)):void("processed"===b.data.event&&(c.imageData=new Uint8Array(b.data.imageData),c.busy=!1,k.publish("processed",b.data.result),b.data.result&&b.data.result.codeResult&&k.publish("detected",b.data.result)))},c.worker.postMessage({cmd:"init",size:{x:G.getWidth(),y:G.getHeight()},imageData:c.imageData,config:j},[c.imageData.buffer])}function D(a){function b(a){self.postMessage({event:"processed",imageData:e.data,result:a},[e.data.buffer])}function 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b.prototype=Object.create(a.prototype,c),b.prototype.constructor=b,b.prototype._decodeCode=function(a){var b,c,d,e,f=[0,0,0,0,0,0],g=this,h=a,i=!g._row[h],j=0,k={error:Number.MAX_VALUE,code:-1,start:a,end:a};for(b=h;b<g._row.length;b++)if(g._row[b]^i)f[j]++;else{if(j===f.length-1){for(e=g._normalize(f),c=0;c<g.CODE_PATTERN.length;c++)d=g._matchPattern(e,g.CODE_PATTERN[c]),d<k.error&&(k.code=c,k.error=d);return k.end=b,k}j++,f[j]=1,i=!i}return null},b.prototype._findEnd=function(){var a,b,c,d,e,f=[0,0,0,0,0,0,0],g=this,h=g._nextSet(g._row),i=!g._row[h],j=0,k={error:Number.MAX_VALUE,code:-1,start:0,end:0};for(a=h;a<g._row.length;a++)if(g._row[a]^i)f[j]++;else{if(j===f.length-1){for(d=0,c=0;c<f.length;c++)d+=f[c];if(e=g._normalize(f,13),b=g._matchPattern(e,g.CODE_PATTERN[g.STOP_CODE]),b<g.AVG_CODE_ERROR)return k.error=b,k.start=a-d,k.end=a,k;for(c=0;5>c;c++)f[c]=f[c+2];f[5]=0,f[6]=0,j--}else j++;f[j]=1,i=!i}return null},b.prototype._findStart=function(){var 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a[0]*a[3]-a[2]*a[1]},h.multiply=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=c[0],i=c[1],j=c[2],k=c[3];return a[0]=d*h+e*j,a[1]=d*i+e*k,a[2]=f*h+g*j,a[3]=f*i+g*k,a},h.mul=h.multiply,h.rotate=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=Math.sin(c),i=Math.cos(c);return a[0]=d*i+e*h,a[1]=d*-h+e*i,a[2]=f*i+g*h,a[3]=f*-h+g*i,a},h.scale=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=c[0],i=c[1];return a[0]=d*h,a[1]=e*i,a[2]=f*h,a[3]=g*i,a},h.str=function(a){return"mat2("+a[0]+", "+a[1]+", "+a[2]+", "+a[3]+")"},"undefined"!=typeof a&&(a.mat2=h);{var i={};new Float32Array([1,0,0,1,0,0])}i.create=function(){var a=new c(6);return a[0]=1,a[1]=0,a[2]=0,a[3]=1,a[4]=0,a[5]=0,a},i.clone=function(a){var b=new c(6);return b[0]=a[0],b[1]=a[1],b[2]=a[2],b[3]=a[3],b[4]=a[4],b[5]=a[5],b},i.copy=function(a,b){return a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=b[3],a[4]=b[4],a[5]=b[5],a},i.identity=function(a){return a[0]=1,a[1]=0,a[2]=0,a[3]=1,a[4]=0,a[5]=0,a},i.invert=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=c*f-d*e;return i?(i=1/i,a[0]=f*i,a[1]=-d*i,a[2]=-e*i,a[3]=c*i,a[4]=(e*h-f*g)*i,a[5]=(d*g-c*h)*i,a):null},i.determinant=function(a){return a[0]*a[3]-a[1]*a[2]},i.multiply=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=c[0],k=c[1],l=c[2],m=c[3],n=c[4],o=c[5];return a[0]=d*j+e*l,a[1]=d*k+e*m,a[2]=f*j+g*l,a[3]=f*k+g*m,a[4]=j*h+l*i+n,a[5]=k*h+m*i+o,a},i.mul=i.multiply,i.rotate=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=Math.sin(c),k=Math.cos(c);return a[0]=d*k+e*j,a[1]=-d*j+e*k,a[2]=f*k+g*j,a[3]=-f*j+k*g,a[4]=k*h+j*i,a[5]=k*i-j*h,a},i.scale=function(a,b,c){var d=c[0],e=c[1];return a[0]=b[0]*d,a[1]=b[1]*e,a[2]=b[2]*d,a[3]=b[3]*e,a[4]=b[4]*d,a[5]=b[5]*e,a},i.translate=function(a,b,c){return a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=b[3],a[4]=b[4]+c[0],a[5]=b[5]+c[1],a},i.str=function(a){return"mat2d("+a[0]+", "+a[1]+", "+a[2]+", "+a[3]+", "+a[4]+", "+a[5]+")"},"undefined"!=typeof a&&(a.mat2d=i);{var j={};new Float32Array([1,0,0,0,1,0,0,0,1])}j.create=function(){var a=new c(9);return a[0]=1,a[1]=0,a[2]=0,a[3]=0,a[4]=1,a[5]=0,a[6]=0,a[7]=0,a[8]=1,a},j.clone=function(a){var b=new c(9);return b[0]=a[0],b[1]=a[1],b[2]=a[2],b[3]=a[3],b[4]=a[4],b[5]=a[5],b[6]=a[6],b[7]=a[7],b[8]=a[8],b},j.copy=function(a,b){return a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=b[3],a[4]=b[4],a[5]=b[5],a[6]=b[6],a[7]=b[7],a[8]=b[8],a},j.identity=function(a){return a[0]=1,a[1]=0,a[2]=0,a[3]=0,a[4]=1,a[5]=0,a[6]=0,a[7]=0,a[8]=1,a},j.transpose=function(a,b){if(a===b){var c=b[1],d=b[2],e=b[5];a[1]=b[3],a[2]=b[6],a[3]=c,a[5]=b[7],a[6]=d,a[7]=e}else a[0]=b[0],a[1]=b[3],a[2]=b[6],a[3]=b[1],a[4]=b[4],a[5]=b[7],a[6]=b[2],a[7]=b[5],a[8]=b[8];return a},j.invert=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8],l=k*g-h*j,m=-k*f+h*i,n=j*f-g*i,o=c*l+d*m+e*n;return o?(o=1/o,a[0]=l*o,a[1]=(-k*d+e*j)*o,a[2]=(h*d-e*g)*o,a[3]=m*o,a[4]=(k*c-e*i)*o,a[5]=(-h*c+e*f)*o,a[6]=n*o,a[7]=(-j*c+d*i)*o,a[8]=(g*c-d*f)*o,a):null},j.adjoint=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8];return a[0]=g*k-h*j,a[1]=e*j-d*k,a[2]=d*h-e*g,a[3]=h*i-f*k,a[4]=c*k-e*i,a[5]=e*f-c*h,a[6]=f*j-g*i,a[7]=d*i-c*j,a[8]=c*g-d*f,a},j.determinant=function(a){var b=a[0],c=a[1],d=a[2],e=a[3],f=a[4],g=a[5],h=a[6],i=a[7],j=a[8];return b*(j*f-g*i)+c*(-j*e+g*h)+d*(i*e-f*h)},j.multiply=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=c[0],n=c[1],o=c[2],p=c[3],q=c[4],r=c[5],s=c[6],t=c[7],u=c[8];return a[0]=m*d+n*g+o*j,a[1]=m*e+n*h+o*k,a[2]=m*f+n*i+o*l,a[3]=p*d+q*g+r*j,a[4]=p*e+q*h+r*k,a[5]=p*f+q*i+r*l,a[6]=s*d+t*g+u*j,a[7]=s*e+t*h+u*k,a[8]=s*f+t*i+u*l,a},j.mul=j.multiply,j.translate=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=c[0],n=c[1];return a[0]=d,a[1]=e,a[2]=f,a[3]=g,a[4]=h,a[5]=i,a[6]=m*d+n*g+j,a[7]=m*e+n*h+k,a[8]=m*f+n*i+l,a},j.rotate=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=Math.sin(c),n=Math.cos(c);return a[0]=n*d+m*g,a[1]=n*e+m*h,a[2]=n*f+m*i,a[3]=n*g-m*d,a[4]=n*h-m*e,a[5]=n*i-m*f,a[6]=j,a[7]=k,a[8]=l,a},j.scale=function(a,b,c){var d=c[0],e=c[2];return a[0]=d*b[0],a[1]=d*b[1],a[2]=d*b[2],a[3]=e*b[3],a[4]=e*b[4],a[5]=e*b[5],a[6]=b[6],a[7]=b[7],a[8]=b[8],a},j.fromMat2d=function(a,b){return a[0]=b[0],a[1]=b[1],a[2]=0,a[3]=b[2],a[4]=b[3],a[5]=0,a[6]=b[4],a[7]=b[5],a[8]=1,a},j.fromQuat=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=c+c,h=d+d,i=e+e,j=c*g,k=c*h,l=c*i,m=d*h,n=d*i,o=e*i,p=f*g,q=f*h,r=f*i;return a[0]=1-(m+o),a[1]=k+r,a[2]=l-q,a[3]=k-r,a[4]=1-(j+o),a[5]=n+p,a[6]=l+q,a[7]=n-p,a[8]=1-(j+m),a},j.str=function(a){return"mat3("+a[0]+", "+a[1]+", "+a[2]+", "+a[3]+", "+a[4]+", "+a[5]+", "+a[6]+", "+a[7]+", "+a[8]+")"},"undefined"!=typeof a&&(a.mat3=j);{var k={};new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1])}k.create=function(){var a=new c(16);return a[0]=1,a[1]=0,a[2]=0,a[3]=0,a[4]=0,a[5]=1,a[6]=0,a[7]=0,a[8]=0,a[9]=0,a[10]=1,a[11]=0,a[12]=0,a[13]=0,a[14]=0,a[15]=1,a},k.clone=function(a){var b=new c(16);return b[0]=a[0],b[1]=a[1],b[2]=a[2],b[3]=a[3],b[4]=a[4],b[5]=a[5],b[6]=a[6],b[7]=a[7],b[8]=a[8],b[9]=a[9],b[10]=a[10],b[11]=a[11],b[12]=a[12],b[13]=a[13],b[14]=a[14],b[15]=a[15],b},k.copy=function(a,b){return a[0]=b[0],a[1]=b[1],a[2]=b[2],a[3]=b[3],a[4]=b[4],a[5]=b[5],a[6]=b[6],a[7]=b[7],a[8]=b[8],a[9]=b[9],a[10]=b[10],a[11]=b[11],a[12]=b[12],a[13]=b[13],a[14]=b[14],a[15]=b[15],a},k.identity=function(a){return a[0]=1,a[1]=0,a[2]=0,a[3]=0,a[4]=0,a[5]=1,a[6]=0,a[7]=0,a[8]=0,a[9]=0,a[10]=1,a[11]=0,a[12]=0,a[13]=0,a[14]=0,a[15]=1,a},k.transpose=function(a,b){if(a===b){var c=b[1],d=b[2],e=b[3],f=b[6],g=b[7],h=b[11];a[1]=b[4],a[2]=b[8],a[3]=b[12],a[4]=c,a[6]=b[9],a[7]=b[13],a[8]=d,a[9]=f,a[11]=b[14],a[12]=e,a[13]=g,a[14]=h
+}else a[0]=b[0],a[1]=b[4],a[2]=b[8],a[3]=b[12],a[4]=b[1],a[5]=b[5],a[6]=b[9],a[7]=b[13],a[8]=b[2],a[9]=b[6],a[10]=b[10],a[11]=b[14],a[12]=b[3],a[13]=b[7],a[14]=b[11],a[15]=b[15];return a},k.invert=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8],l=b[9],m=b[10],n=b[11],o=b[12],p=b[13],q=b[14],r=b[15],s=c*h-d*g,t=c*i-e*g,u=c*j-f*g,v=d*i-e*h,w=d*j-f*h,x=e*j-f*i,y=k*p-l*o,z=k*q-m*o,A=k*r-n*o,B=l*q-m*p,C=l*r-n*p,D=m*r-n*q,E=s*D-t*C+u*B+v*A-w*z+x*y;return E?(E=1/E,a[0]=(h*D-i*C+j*B)*E,a[1]=(e*C-d*D-f*B)*E,a[2]=(p*x-q*w+r*v)*E,a[3]=(m*w-l*x-n*v)*E,a[4]=(i*A-g*D-j*z)*E,a[5]=(c*D-e*A+f*z)*E,a[6]=(q*u-o*x-r*t)*E,a[7]=(k*x-m*u+n*t)*E,a[8]=(g*C-h*A+j*y)*E,a[9]=(d*A-c*C-f*y)*E,a[10]=(o*w-p*u+r*s)*E,a[11]=(l*u-k*w-n*s)*E,a[12]=(h*z-g*B-i*y)*E,a[13]=(c*B-d*z+e*y)*E,a[14]=(p*t-o*v-q*s)*E,a[15]=(k*v-l*t+m*s)*E,a):null},k.adjoint=function(a,b){var c=b[0],d=b[1],e=b[2],f=b[3],g=b[4],h=b[5],i=b[6],j=b[7],k=b[8],l=b[9],m=b[10],n=b[11],o=b[12],p=b[13],q=b[14],r=b[15];return a[0]=h*(m*r-n*q)-l*(i*r-j*q)+p*(i*n-j*m),a[1]=-(d*(m*r-n*q)-l*(e*r-f*q)+p*(e*n-f*m)),a[2]=d*(i*r-j*q)-h*(e*r-f*q)+p*(e*j-f*i),a[3]=-(d*(i*n-j*m)-h*(e*n-f*m)+l*(e*j-f*i)),a[4]=-(g*(m*r-n*q)-k*(i*r-j*q)+o*(i*n-j*m)),a[5]=c*(m*r-n*q)-k*(e*r-f*q)+o*(e*n-f*m),a[6]=-(c*(i*r-j*q)-g*(e*r-f*q)+o*(e*j-f*i)),a[7]=c*(i*n-j*m)-g*(e*n-f*m)+k*(e*j-f*i),a[8]=g*(l*r-n*p)-k*(h*r-j*p)+o*(h*n-j*l),a[9]=-(c*(l*r-n*p)-k*(d*r-f*p)+o*(d*n-f*l)),a[10]=c*(h*r-j*p)-g*(d*r-f*p)+o*(d*j-f*h),a[11]=-(c*(h*n-j*l)-g*(d*n-f*l)+k*(d*j-f*h)),a[12]=-(g*(l*q-m*p)-k*(h*q-i*p)+o*(h*m-i*l)),a[13]=c*(l*q-m*p)-k*(d*q-e*p)+o*(d*m-e*l),a[14]=-(c*(h*q-i*p)-g*(d*q-e*p)+o*(d*i-e*h)),a[15]=c*(h*m-i*l)-g*(d*m-e*l)+k*(d*i-e*h),a},k.determinant=function(a){var b=a[0],c=a[1],d=a[2],e=a[3],f=a[4],g=a[5],h=a[6],i=a[7],j=a[8],k=a[9],l=a[10],m=a[11],n=a[12],o=a[13],p=a[14],q=a[15],r=b*g-c*f,s=b*h-d*f,t=b*i-e*f,u=c*h-d*g,v=c*i-e*g,w=d*i-e*h,x=j*o-k*n,y=j*p-l*n,z=j*q-m*n,A=k*p-l*o,B=k*q-m*o,C=l*q-m*p;return r*C-s*B+t*A+u*z-v*y+w*x},k.multiply=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=b[4],i=b[5],j=b[6],k=b[7],l=b[8],m=b[9],n=b[10],o=b[11],p=b[12],q=b[13],r=b[14],s=b[15],t=c[0],u=c[1],v=c[2],w=c[3];return a[0]=t*d+u*h+v*l+w*p,a[1]=t*e+u*i+v*m+w*q,a[2]=t*f+u*j+v*n+w*r,a[3]=t*g+u*k+v*o+w*s,t=c[4],u=c[5],v=c[6],w=c[7],a[4]=t*d+u*h+v*l+w*p,a[5]=t*e+u*i+v*m+w*q,a[6]=t*f+u*j+v*n+w*r,a[7]=t*g+u*k+v*o+w*s,t=c[8],u=c[9],v=c[10],w=c[11],a[8]=t*d+u*h+v*l+w*p,a[9]=t*e+u*i+v*m+w*q,a[10]=t*f+u*j+v*n+w*r,a[11]=t*g+u*k+v*o+w*s,t=c[12],u=c[13],v=c[14],w=c[15],a[12]=t*d+u*h+v*l+w*p,a[13]=t*e+u*i+v*m+w*q,a[14]=t*f+u*j+v*n+w*r,a[15]=t*g+u*k+v*o+w*s,a},k.mul=k.multiply,k.translate=function(a,b,c){var d,e,f,g,h,i,j,k,l,m,n,o,p=c[0],q=c[1],r=c[2];return 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d=Math.sin(c);return a[0]=d*b[0],a[1]=d*b[1],a[2]=d*b[2],a[3]=Math.cos(c),a},l.add=g.add,l.multiply=function(a,b,c){var d=b[0],e=b[1],f=b[2],g=b[3],h=c[0],i=c[1],j=c[2],k=c[3];return a[0]=d*k+g*h+e*j-f*i,a[1]=e*k+g*i+f*h-d*j,a[2]=f*k+g*j+d*i-e*h,a[3]=g*k-d*h-e*i-f*j,a},l.mul=l.multiply,l.scale=g.scale,l.rotateX=function(a,b,c){c*=.5;var d=b[0],e=b[1],f=b[2],g=b[3],h=Math.sin(c),i=Math.cos(c);return a[0]=d*i+g*h,a[1]=e*i+f*h,a[2]=f*i-e*h,a[3]=g*i-d*h,a},l.rotateY=function(a,b,c){c*=.5;var d=b[0],e=b[1],f=b[2],g=b[3],h=Math.sin(c),i=Math.cos(c);return a[0]=d*i-f*h,a[1]=e*i+g*h,a[2]=f*i+d*h,a[3]=g*i-e*h,a},l.rotateZ=function(a,b,c){c*=.5;var d=b[0],e=b[1],f=b[2],g=b[3],h=Math.sin(c),i=Math.cos(c);return a[0]=d*i+e*h,a[1]=e*i-d*h,a[2]=f*i+g*h,a[3]=g*i-f*h,a},l.calculateW=function(a,b){var c=b[0],d=b[1],e=b[2];return a[0]=c,a[1]=d,a[2]=e,a[3]=-Math.sqrt(Math.abs(1-c*c-d*d-e*e)),a},l.dot=g.dot,l.lerp=g.lerp,l.slerp=function(a,b,c,d){var 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c},d.computeIntegralImage2=function(a,b){var c,d,e=a.data,f=a.size.x,g=a.size.y,h=b.data,i=0,j=0,k=0,l=0,m=0;for(k=f,i=0,d=1;g>d;d++)i+=e[j],h[k]+=i,j+=f,k+=f;for(j=0,k=1,i=0,c=1;f>c;c++)i+=e[j],h[k]+=i,j++,k++;for(d=1;g>d;d++)for(j=d*f+1,k=(d-1)*f+1,l=d*f,m=(d-1)*f,c=1;f>c;c++)h[j]+=e[j]+h[k]+h[l]-h[m],j++,k++,l++,m++},d.computeIntegralImage=function(a,b){for(var c=a.data,d=a.size.x,e=a.size.y,f=b.data,g=0,h=0;d>h;h++)g+=c[h],f[h]=g;for(var i=1;e>i;i++){g=0;for(var j=0;d>j;j++)g+=c[i*d+j],f[i*d+j]=g+f[(i-1)*d+j]}},d.thresholdImage=function(a,b,c){c||(c=a);for(var d=a.data,e=d.length,f=c.data;e--;)f[e]=d[e]<b?1:0},d.computeHistogram=function(a,b){b||(b=8);for(var c=a.data,d=c.length,e=8-b,f=1<<b,g=new Int32Array(f);d--;)g[c[d]>>e]++;return g},d.sharpenLine=function(a){var b,c,d=a.length,e=a[0],f=a[1];for(b=1;d-1>b;b++)c=a[b+1],a[b-1]=2*f-e-c&255,e=f,f=c;return a},d.determineOtsuThreshold=function(a,c){function e(a,b){var c,d=0;for(c=a;b>=c;c++)d+=h[c];return d}function f(a,b){var c,d=0;for(c=a;b>=c;c++)d+=c*h[c];return d}function g(){var g,i,j,k,l,m,n,o=[0],p=(1<<c)-1;for(h=d.computeHistogram(a,c),k=1;p>k;k++)g=e(0,k),i=e(k+1,p),j=g*i,0===j&&(j=1),l=f(0,k)*i,m=f(k+1,p)*g,n=l-m,o[k]=n*n/j;return b.maxIndex(o)}c||(c=8);var h,i,j=8-c;return i=g(),i<<j},d.otsuThreshold=function(a,b){var c=d.determineOtsuThreshold(a);return d.thresholdImage(a,c,b),c},d.computeBinaryImage=function(a,b,c){d.computeIntegralImage(a,b),c||(c=a);var e,f,g,h,i,j,k,l=a.data,m=c.data,n=a.size.x,o=a.size.y,p=b.data,q=0,r=3,s=(2*r+1)*(2*r+1);for(e=0;r>=e;e++)for(f=0;n>f;f++)m[e*n+f]=0,m[(o-1-e)*n+f]=0;for(e=r;o-r>e;e++)for(f=0;r>=f;f++)m[e*n+f]=0,m[e*n+(n-1-f)]=0;for(e=r+1;o-r-1>e;e++)for(f=r+1;n-r>f;f++)g=p[(e-r-1)*n+(f-r-1)],h=p[(e-r-1)*n+(f+r)],i=p[(e+r)*n+(f-r-1)],j=p[(e+r)*n+(f+r)],q=j-i-h+g,k=q/s,m[e*n+f]=l[e*n+f]>k+5?0:1},d.cluster=function(b,c,d){function e(a){var b=!1;for(g=0;g<j.length;g++)h=j[g],h.fits(a)&&(h.add(a),b=!0);return b}var f,g,h,i,j=[];for(d||(d="rad"),f=0;f<b.length;f++)i=a.createPoint(b[f],f,d),e(i)||j.push(a.create(i,c));return j},d.Tracer={trace:function(a,b){function c(c,d){function e(a,b){return a.x>b.x-j&&a.x<b.x+j&&a.y>b.y-k&&a.y<b.y+k?!0:!1}var f,g,h,i,j=1,k=Math.abs(b[1]/10),l=!1;for(f=a[c],i=d?{x:f.x+b[0],y:f.y+b[1]}:{x:f.x-b[0],y:f.y-b[1]},h=d?c+1:c-1,g=a[h];g&&(l=e(g,i))!==!0&&Math.abs(g.y-f.y)<b[1];)h=d?h+1:h-1,g=a[h];return l?h:null}var d,e=10,f=[],g=[],h=0,i=0;for(d=0;e>d;d++){for(h=Math.floor(Math.random()*a.length),f=[],i=h,f.push(a[i]);null!==(i=c(i,!0));)f.push(a[i]);if(h>0)for(i=h;null!==(i=c(i,!1));)f.push(a[i]);f.length>g.length&&(g=f)}return g}},d.DILATE=1,d.ERODE=2,d.dilate=function(a,b){var c,d,e,f,g,h,i,j=a.data,k=b.data,l=a.size.y,m=a.size.x;for(c=1;l-1>c;c++)for(d=1;m-1>d;d++)f=c-1,g=c+1,h=d-1,i=d+1,e=j[f*m+h]+j[f*m+i]+j[c*m+d]+j[g*m+h]+j[g*m+i],k[c*m+d]=e>0?1:0},d.erode=function(a,b){var c,d,e,f,g,h,i,j=a.data,k=b.data,l=a.size.y,m=a.size.x;for(c=1;l-1>c;c++)for(d=1;m-1>d;d++)f=c-1,g=c+1,h=d-1,i=d+1,e=j[f*m+h]+j[f*m+i]+j[c*m+d]+j[g*m+h]+j[g*m+i],k[c*m+d]=5===e?1:0},d.subtract=function(a,b,c){c||(c=a);for(var d=a.data.length,e=a.data,f=b.data,g=c.data;d--;)g[d]=e[d]-f[d]},d.bitwiseOr=function(a,b,c){c||(c=a);for(var d=a.data.length,e=a.data,f=b.data,g=c.data;d--;)g[d]=e[d]||f[d]},d.countNonZero=function(a){for(var b=a.data.length,c=a.data,d=0;b--;)d+=c[b];return d},d.topGeneric=function(a,b,c){var d,e,f,g,h=0,i=0,j=[];for(d=0;b>d;d++)j[d]={score:0,item:null};for(d=0;d<a.length;d++)if(e=c.apply(this,[a[d]]),e>i)for(f=j[h],f.score=e,f.item=a[d],i=Number.MAX_VALUE,g=0;b>g;g++)j[g].score<i&&(i=j[g].score,h=g);return j},d.grayArrayFromImage=function(a,b,c,e){c.drawImage(a,b,0,a.width,a.height);var f=c.getImageData(b,0,a.width,a.height).data;d.computeGray(f,e)},d.grayArrayFromContext=function(a,b,c,e){var f=a.getImageData(c.x,c.y,b.x,b.y).data;d.computeGray(f,e)},d.grayAndHalfSampleFromCanvasData=function(a,b,c){for(var d,e=0,f=b.x,g=Math.floor(a.length/4),h=b.x/2,i=0,j=b.x;g>f;){for(d=0;h>d;d++)c[i]=Math.floor((.299*a[4*e+0]+.587*a[4*e+1]+.114*a[4*e+2]+(.299*a[4*(e+1)+0]+.587*a[4*(e+1)+1]+.114*a[4*(e+1)+2])+(.299*a[4*f+0]+.587*a[4*f+1]+.114*a[4*f+2])+(.299*a[4*(f+1)+0]+.587*a[4*(f+1)+1]+.114*a[4*(f+1)+2]))/4),i++,e+=2,f+=2;e+=j,f+=j}},d.computeGray=function(a,b){var c=a.length/4,d=0;for(d=0;c>d;d++)b[d]=Math.floor(.299*a[4*d+0]+.587*a[4*d+1]+.114*a[4*d+2])},d.loadImageArray=function(a,b,c){c||(c=document.createElement("canvas"));var e=new Image;e.callback=b,e.onload=function(){c.width=this.width,c.height=this.height;var a=c.getContext("2d");a.drawImage(this,0,0);var b=new Uint8Array(this.width*this.height);a.drawImage(this,0,0);var e=a.getImageData(0,0,this.width,this.height).data;d.computeGray(e,b),this.callback(b,{x:this.width,y:this.height},this)},e.src=a},d.halfSample=function(a,b){for(var c=a.data,d=a.size.x,e=b.data,f=0,g=d,h=c.length,i=d/2,j=0;h>g;){for(var k=0;i>k;k++)e[j]=Math.floor((c[f]+c[f+1]+c[g]+c[g+1])/4),j++,f+=2,g+=2;f+=d,g+=d}},d.hsv2rgb=function(a,b){var c=a[0],d=a[1],e=a[2],f=e*d,g=f*(1-Math.abs(c/60%2-1)),h=e-f,i=0,j=0,k=0;return b=b||[0,0,0],60>c?(i=f,j=g):120>c?(i=g,j=f):180>c?(j=f,k=g):240>c?(j=g,k=f):300>c?(i=g,k=f):360>c&&(i=f,k=g),b[0]=255*(i+h)|0,b[1]=255*(j+h)|0,b[2]=255*(k+h)|0,b},d._computeDivisors=function(a){var b,c=[],d=[];for(b=1;b<Math.sqrt(a)+1;b++)a%b===0&&(d.push(b),b!==a/b&&c.unshift(Math.floor(a/b)));return d.concat(c)},d._computeIntersection=function(a,b){for(var c=0,d=0,e=[];c<a.length&&d<b.length;)a[c]===b[d]?(e.push(a[c]),c++,d++):a[c]>b[d]?d++:c++;return e},d.calculatePatchSize=function(a,b){function c(a){for(var b=0,c=a[Math.floor(a.length/2)];b<a.length-1&&a[b]<m;)b++;return b>0&&(c=Math.abs(a[b]-m)>Math.abs(a[b-1]-m)?a[b-1]:a[b]),m/c<i[k+1]/i[k]&&m/c>i[k-1]/i[k]?{x:c,y:c}:null}var d,e=this._computeDivisors(b.x),f=this._computeDivisors(b.y),g=Math.max(b.x,b.y),h=this._computeIntersection(e,f),i=[8,10,15,20,32,60,80],j={"x-small":5,small:4,medium:3,large:2,"x-large":1},k=j[a]||j.medium,l=i[k],m=Math.floor(g/l);return d=c(h),d||(d=c(this._computeDivisors(g)),d||(d=c(this._computeDivisors(m*l)))),d},d._parseCSSDimensionValues=function(a){var b={value:parseFloat(a),unit:a.indexOf("%")===a.length-1?"%":"%"};return b},d._dimensionsConverters={top:function(a,b){return"%"===a.unit?Math.floor(b.height*(a.value/100)):void 0},right:function(a,b){return"%"===a.unit?Math.floor(b.width-b.width*(a.value/100)):void 0},bottom:function(a,b){return"%"===a.unit?Math.floor(b.height-b.height*(a.value/100)):void 0},left:function(a,b){return"%"===a.unit?Math.floor(b.width*(a.value/100)):void 0}},d.computeImageArea=function(a,b,c){var e={width:a,height:b},f=Object.keys(c).reduce(function(a,b){var f=c[b],g=d._parseCSSDimensionValues(f),h=d._dimensionsConverters[b](g,e);return a[b]=h,a},{});return{sx:f.left,sy:f.top,sw:f.right-f.left,sh:f.bottom-f.top}},d}),d("image_wrapper",["subImage","cv_utils","array_helper","gl-matrix"],function(a,b,c,d){function e(a,b,d,e){b?this.data=b:d?(this.data=new d(a.x*a.y),d===Array&&e&&c.init(this.data,0)):(this.data=new Uint8Array(a.x*a.y),Uint8Array===Array&&e&&c.init(this.data,0)),this.size=a}var f=d.vec2,g=d.mat2;return e.prototype.inImageWithBorder=function(a,b){return a.x>=b&&a.y>=b&&a.x<this.size.x-b&&a.y<this.size.y-b},e.transform=function(a,b,c,d,h){var i,j,k,l=b.size.x,m=b.size.y,n=a.size.x,o=a.size.y,p=f.clone([c[0],c[2]]),q=f.clone([c[1],c[3]]),r=0,s=f.subtract(d,g.xVec2(c,h,f.clone()),f.clone()),t=s[0],u=s[1],v=t,w=u,x=e.sample;p[0]<0?t+=l*p[0]:v+=l*p[0],q[0]<0?t+=m*q[0]:v+=m*q[0],p[1]<0?u+=l*p[1]:w+=l*p[1],q[1]<0?u+=m*q[1]:w+=m*q[1];var y=f.subtract(q,f.scale(p,l,f.clone()),f.clone());if(t>=0&&u>=0&&n-1>v&&o-1>w){for(i=s,j=0;m>j;++j,f.add(i,y))for(k=0;l>k;++k,f.add(i,p))b.set(k,j,x(a,i[0],i[1]));return 0}var z=n-1,A=o-1,B=0;for(i=s,j=0;m>j;++j,f.add(i,y))for(k=0;l>k;++k,f.add(i,p))0<=i[0]&&0<=i[1]&&i[0]<z&&i[1]<A?b.set(k,j,x(a,i[0],i[1])):(b.set(k,j,r),++B);return B},e.sample=function(a,b,c){var d=Math.floor(b),e=Math.floor(c),f=a.size.x,g=e*a.size.x+d,h=a.data[g+0],i=a.data[g+1],j=a.data[g+f],k=a.data[g+f+1],l=h-i;b-=d,c-=e;var m=Math.floor(b*(c*(l-j+k)-l)+c*(j-h)+h);return m},e.clearArray=function(a){for(var b=a.length;b--;)a[b]=0},e.prototype.subImage=function(b,c){return new a(b,c,this)},e.prototype.subImageAsCopy=function(a,b){var c,d,e=a.size.y,f=a.size.x;for(c=0;f>c;c++)for(d=0;e>d;d++)a.data[d*f+c]=this.data[(b.y+d)*this.size.x+b.x+c]},e.prototype.copyTo=function(a){for(var b=this.data.length,c=this.data,d=a.data;b--;)d[b]=c[b]},e.prototype.get=function(a,b){return this.data[b*this.size.x+a]},e.prototype.getSafe=function(a,b){var c;if(!this.indexMapping){for(this.indexMapping={x:[],y:[]},c=0;c<this.size.x;c++)this.indexMapping.x[c]=c,this.indexMapping.x[c+this.size.x]=c;for(c=0;c<this.size.y;c++)this.indexMapping.y[c]=c,this.indexMapping.y[c+this.size.y]=c}return this.data[this.indexMapping.y[b+this.size.y]*this.size.x+this.indexMapping.x[a+this.size.x]]},e.prototype.set=function(a,b,c){return this.data[b*this.size.x+a]=c,this},e.prototype.zeroBorder=function(){var a,b=this.size.x,c=this.size.y,d=this.data;for(a=0;b>a;a++)d[a]=d[(c-1)*b+a]=0;for(a=1;c-1>a;a++)d[a*b]=d[a*b+(b-1)]=0},e.prototype.invert=function(){for(var a=this.data,b=a.length;b--;)a[b]=a[b]?0:1},e.prototype.convolve=function(a){var b,c,d,e,f=a.length/2|0,g=0;for(c=0;c<this.size.y;c++)for(b=0;b<this.size.x;b++){for(g=0,e=-f;f>=e;e++)for(d=-f;f>=d;d++)g+=a[e+f][d+f]*this.getSafe(b+d,c+e);this.data[c*this.size.x+b]=g}},e.prototype.moments=function(a){var b,c,d,e,g,h,i,j,k,l,m,n,o=this.data,p=this.size.y,q=this.size.x,r=[],s=[],t=Math.PI,u=t/4;if(0>=a)return s;for(g=0;a>g;g++)r[g]={m00:0,m01:0,m10:0,m11:0,m02:0,m20:0,theta:0,rad:0};for(c=0;p>c;c++)for(e=c*c,b=0;q>b;b++)d=o[c*q+b],d>0&&(h=r[d-1],h.m00+=1,h.m01+=c,h.m10+=b,h.m11+=b*c,h.m02+=e,h.m20+=b*b);for(g=0;a>g;g++)h=r[g],isNaN(h.m00)||0===h.m00||(l=h.m10/h.m00,m=h.m01/h.m00,i=h.m11/h.m00-l*m,j=h.m02/h.m00-m*m,k=h.m20/h.m00-l*l,n=(j-k)/(2*i),n=.5*Math.atan(n)+(i>=0?u:-u)+t,h.theta=(180*n/t+90)%180-90,h.theta<0&&(h.theta+=180),h.rad=n>t?n-t:n,h.vec=f.clone([Math.cos(n),Math.sin(n)]),s.push(h));return s},e.prototype.show=function(a,b){var c,d,e,f,g,h,i;for(b||(b=1),c=a.getContext("2d"),a.width=this.size.x,a.height=this.size.y,d=c.getImageData(0,0,a.width,a.height),e=d.data,f=0,i=0;i<this.size.y;i++)for(h=0;h<this.size.x;h++)g=i*this.size.x+h,f=this.get(h,i)*b,e[4*g+0]=f,e[4*g+1]=f,e[4*g+2]=f,e[4*g+3]=255;c.putImageData(d,0,0)},e.prototype.overlay=function(a,c,d){(!c||0>c||c>360)&&(c=360);for(var e=[0,1,1],f=[0,0,0],g=[255,255,255],h=[0,0,0],i=[],j=a.getContext("2d"),k=j.getImageData(d.x,d.y,this.size.x,this.size.y),l=k.data,m=this.data.length;m--;)e[0]=this.data[m]*c,i=e[0]<=0?g:e[0]>=360?h:b.hsv2rgb(e,f),l[4*m+0]=i[0],l[4*m+1]=i[1],l[4*m+2]=i[2],l[4*m+3]=255;j.putImageData(k,d.x,d.y)},e}),d("tracer",[],function(){var a={searchDirections:[[0,1],[1,1],[1,0],[1,-1],[0,-1],[-1,-1],[-1,0],[-1,1]],create:function(a,b){function c(a,b,c,d){var e,k,l;for(e=0;7>e;e++){if(k=a.cy+i[a.dir][0],l=a.cx+i[a.dir][1],f=k*j+l,g[f]===b&&(0===h[f]||h[f]===c))return h[f]=c,a.cy=k,a.cx=l,!0;0===h[f]&&(h[f]=d),a.dir=(a.dir+1)%8}return!1}function d(a,b,c){return{dir:c,x:a,y:b,next:null,prev:null}}function e(a,b,e,f,g){var h,i,j,k=null,l={cx:b,cy:a,dir:0};if(c(l,f,e,g)){k=d(b,a,l.dir),h=k,j=l.dir,i=d(l.cx,l.cy,0),i.prev=h,h.next=i,i.next=null,h=i;do l.dir=(l.dir+6)%8,c(l,f,e,g),j!=l.dir?(h.dir=l.dir,i=d(l.cx,l.cy,0),i.prev=h,h.next=i,i.next=null,h=i):(h.dir=j,h.x=l.cx,h.y=l.cy),j=l.dir;while(l.cx!=b||l.cy!=a);k.prev=h.prev,h.prev.next=k}return k}var f,g=a.data,h=b.data,i=this.searchDirections,j=a.size.x;return{trace:function(a,b,d,e){return c(a,b,d,e)},contourTracing:function(a,b,c,d,f){return e(a,b,c,d,f)}}}};return a}),d("rasterizer",["tracer"],function(a){var b={createContour2D:function(){return{dir:null,index:null,firstVertex:null,insideContours:null,nextpeer:null,prevpeer:null}},CONTOUR_DIR:{CW_DIR:0,CCW_DIR:1,UNKNOWN_DIR:2},DIR:{OUTSIDE_EDGE:-32767,INSIDE_EDGE:-32766},create:function(c,d){var e=c.data,f=d.data,g=c.size.x,h=c.size.y,i=a.create(c,d);return{rasterize:function(a){var c,d,j,k,l,m,n,o,p,q,r,s,t=[],u=0;for(s=0;400>s;s++)t[s]=0;for(t[0]=e[0],p=null,m=1;h-1>m;m++)for(k=0,d=t[0],l=1;g-1>l;l++)if(r=m*g+l,0===f[r])if(c=e[r],c!==d){if(0===k)j=u+1,t[j]=c,d=c,n=i.contourTracing(m,l,j,c,b.DIR.OUTSIDE_EDGE),null!==n&&(u++,k=j,o=b.createContour2D(),o.dir=b.CONTOUR_DIR.CW_DIR,o.index=k,o.firstVertex=n,o.nextpeer=p,o.insideContours=null,null!==p&&(p.prevpeer=o),p=o);else if(n=i.contourTracing(m,l,b.DIR.INSIDE_EDGE,c,k),null!==n){for(o=b.createContour2D(),o.firstVertex=n,o.insideContours=null,o.dir=0===a?b.CONTOUR_DIR.CCW_DIR:b.CONTOUR_DIR.CW_DIR,o.index=a,q=p;null!==q&&q.index!==k;)q=q.nextpeer;null!==q&&(o.nextpeer=q.insideContours,null!==q.insideContours&&(q.insideContours.prevpeer=o),q.insideContours=o)}}else f[r]=k;else f[r]===b.DIR.OUTSIDE_EDGE||f[r]===b.DIR.INSIDE_EDGE?(k=0,d=f[r]===b.DIR.INSIDE_EDGE?e[r]:t[0]):(k=f[r],d=t[k]);for(q=p;null!==q;)q.index=a,q=q.nextpeer;return{cc:p,count:u}},debug:{drawContour:function(a,c){var d,e,f,g=a.getContext("2d"),h=c;for(g.strokeStyle="red",g.fillStyle="red",g.lineWidth=1,d=null!==h?h.insideContours:null;null!==h;){switch(null!==d?(e=d,d=d.nextpeer):(e=h,h=h.nextpeer,d=null!==h?h.insideContours:null),e.dir){case b.CONTOUR_DIR.CW_DIR:g.strokeStyle="red";break;case b.CONTOUR_DIR.CCW_DIR:g.strokeStyle="blue";break;case b.CONTOUR_DIR.UNKNOWN_DIR:g.strokeStyle="green"}f=e.firstVertex,g.beginPath(),g.moveTo(f.x,f.y);do f=f.next,g.lineTo(f.x,f.y);while(f!==e.firstVertex);g.stroke()}}}}}};return b}),d("skeletonizer",[],function(){function a(stdlib, foreign, buffer) {"use asm";var images=new stdlib.Uint8Array(buffer),size=foreign.size|0,imul=stdlib.Math.imul;function erode(inImagePtr, outImagePtr) {inImagePtr=inImagePtr|0;outImagePtr=outImagePtr|0;var v=0,u=0,sum=0,yStart1=0,yStart2=0,xStart1=0,xStart2=0,offset=0;for ( v=1; (v|0)<((size - 1)|0); v=(v+1)|0) {offset=(offset+size)|0;for ( u=1; (u|0)<((size - 1)|0); u=(u+1)|0) {yStart1=(offset - size)|0;yStart2=(offset+size)|0;xStart1=(u - 1)|0;xStart2=(u+1)|0;sum=((images[(inImagePtr+yStart1+xStart1)|0]|0)+(images[(inImagePtr+yStart1+xStart2)|0]|0)+(images[(inImagePtr+offset+u)|0]|0)+(images[(inImagePtr+yStart2+xStart1)|0]|0)+(images[(inImagePtr+yStart2+xStart2)|0]|0))|0;if ((sum|0) == (5|0)) {images[(outImagePtr+offset+u)|0]=1;} else {images[(outImagePtr+offset+u)|0]=0;}}}return;}function subtract(aImagePtr, bImagePtr, outImagePtr) {aImagePtr=aImagePtr|0;bImagePtr=bImagePtr|0;outImagePtr=outImagePtr|0;var length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;images[(outImagePtr+length)|0]=((images[(aImagePtr+length)|0]|0) - (images[(bImagePtr+length)|0]|0))|0;}}function bitwiseOr(aImagePtr, bImagePtr, outImagePtr) {aImagePtr=aImagePtr|0;bImagePtr=bImagePtr|0;outImagePtr=outImagePtr|0;var length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;images[(outImagePtr+length)|0]=((images[(aImagePtr+length)|0]|0)|(images[(bImagePtr+length)|0]|0))|0;}}function countNonZero(imagePtr) {imagePtr=imagePtr|0;var sum=0,length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;sum=((sum|0)+(images[(imagePtr+length)|0]|0))|0;}return (sum|0);}function init(imagePtr, value) {imagePtr=imagePtr|0;value=value|0;var length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;images[(imagePtr+length)|0]=value;}}function dilate(inImagePtr, outImagePtr) {inImagePtr=inImagePtr|0;outImagePtr=outImagePtr|0;var v=0,u=0,sum=0,yStart1=0,yStart2=0,xStart1=0,xStart2=0,offset=0;for ( v=1; (v|0)<((size - 1)|0); v=(v+1)|0) {offset=(offset+size)|0;for ( u=1; (u|0)<((size - 1)|0); u=(u+1)|0) {yStart1=(offset - size)|0;yStart2=(offset+size)|0;xStart1=(u - 1)|0;xStart2=(u+1)|0;sum=((images[(inImagePtr+yStart1+xStart1)|0]|0)+(images[(inImagePtr+yStart1+xStart2)|0]|0)+(images[(inImagePtr+offset+u)|0]|0)+(images[(inImagePtr+yStart2+xStart1)|0]|0)+(images[(inImagePtr+yStart2+xStart2)|0]|0))|0;if ((sum|0)>(0|0)) {images[(outImagePtr+offset+u)|0]=1;} else {images[(outImagePtr+offset+u)|0]=0;}}}return;}function memcpy(srcImagePtr, dstImagePtr) {srcImagePtr=srcImagePtr|0;dstImagePtr=dstImagePtr|0;var length=0;length=imul(size, size)|0;while ((length|0)>0) {length=(length - 1)|0;images[(dstImagePtr+length)|0]=(images[(srcImagePtr+length)|0]|0);}}function zeroBorder(imagePtr) {imagePtr=imagePtr|0;var x=0,y=0;for ( x=0; (x|0)<((size - 1)|0); x=(x+1)|0) {images[(imagePtr+x)|0]=0;images[(imagePtr+y)|0]=0;y=((y+size) - 1)|0;images[(imagePtr+y)|0]=0;y=(y+1)|0;}for ( x=0; (x|0)<(size|0); x=(x+1)|0) {images[(imagePtr+y)|0]=0;y=(y+1)|0;}}function skeletonize() {var subImagePtr=0,erodedImagePtr=0,tempImagePtr=0,skelImagePtr=0,sum=0,done=0;erodedImagePtr=imul(size, size)|0;tempImagePtr=(erodedImagePtr+erodedImagePtr)|0;skelImagePtr=(tempImagePtr+erodedImagePtr)|0;init(skelImagePtr, 0);zeroBorder(subImagePtr);do {erode(subImagePtr, erodedImagePtr);dilate(erodedImagePtr, tempImagePtr);subtract(subImagePtr, tempImagePtr, tempImagePtr);bitwiseOr(skelImagePtr, tempImagePtr, skelImagePtr);memcpy(erodedImagePtr, subImagePtr);sum=countNonZero(subImagePtr)|0;done=((sum|0) == 0|0);} while(!done);}return {skeletonize : skeletonize};}
+return Math.imul=Math.imul||function(a,b){var c=a>>>16&65535,d=65535&a,e=b>>>16&65535,f=65535&b;return d*f+(c*f+d*e<<16>>>0)|0},a}),d("image_debug",[],function(){return{drawRect:function(a,b,c,d){c.strokeStyle=d.color,c.fillStyle=d.color,c.lineWidth=1,c.beginPath(),c.strokeRect(a.x,a.y,b.x,b.y)},drawPath:function(a,b,c,d){c.strokeStyle=d.color,c.fillStyle=d.color,c.lineWidth=d.lineWidth,c.beginPath(),c.moveTo(a[0][b.x],a[0][b.y]);for(var e=1;e<a.length;e++)c.lineTo(a[e][b.x],a[e][b.y]);c.closePath(),c.stroke()}}}),d("barcode_locator",["image_wrapper","cv_utils","rasterizer","tracer","skeletonizer","array_helper","image_debug","gl-matrix"],function(a,b,c,d,e,f,g,h){function i(){var c;u=t.halfSample?new a({x:D.size.x/2|0,y:D.size.y/2|0}):D,C=b.calculatePatchSize(t.patchSize,u.size),G.x=u.size.x/C.x|0,G.y=u.size.y/C.y|0,B=new a(u.size,void 0,Uint8Array,!1),x=new a(C,void 0,Array,!0),c=new ArrayBuffer(65536),w=new a(C,new Uint8Array(c,0,C.x*C.y)),v=new a(C,new Uint8Array(c,C.x*C.y*3,C.x*C.y),void 0,!0),E=e(J,{size:C.x},c),A=new a({x:u.size.x/w.size.x|0,y:u.size.y/w.size.y|0},void 0,Array,!0),y=new a(A.size,void 0,void 0,!0),z=new a(A.size,void 0,Int32Array,!0)}function j(){t.useWorker||"undefined"==typeof document||(F.dom.binary=document.createElement("canvas"),F.dom.binary.className="binaryBuffer",t.showCanvas===!0&&document.querySelector("#debug").appendChild(F.dom.binary),F.ctx.binary=F.dom.binary.getContext("2d"),F.dom.binary.width=B.size.x,F.dom.binary.height=B.size.y)}function k(a){var b,c,d,e,f,h,i,j=B.size.x,k=B.size.y,l=-B.size.x,m=-B.size.y;for(b=0,c=0;c<a.length;c++)e=a[c],b+=e.rad,t.showPatches&&g.drawRect(e.pos,w.size,F.ctx.binary,{color:"red"});for(b/=a.length,b=(180*b/Math.PI+90)%180-90,0>b&&(b+=180),b=(180-b)*Math.PI/180,f=I.clone([Math.cos(b),Math.sin(b),-Math.sin(b),Math.cos(b)]),c=0;c<a.length;c++){for(e=a[c],d=0;4>d;d++)H.transformMat2(e.box[d],e.box[d],f);t.boxFromPatches.showTransformed&&g.drawPath(e.box,{x:0,y:1},F.ctx.binary,{color:"#99ff00",lineWidth:2})}for(c=0;c<a.length;c++)for(e=a[c],d=0;4>d;d++)e.box[d][0]<j&&(j=e.box[d][0]),e.box[d][0]>l&&(l=e.box[d][0]),e.box[d][1]<k&&(k=e.box[d][1]),e.box[d][1]>m&&(m=e.box[d][1]);for(h=[[j,k],[l,k],[l,m],[j,m]],t.boxFromPatches.showTransformedBox&&g.drawPath(h,{x:0,y:1},F.ctx.binary,{color:"#ff0000",lineWidth:2}),i=t.halfSample?2:1,f=I.invert(f,f),d=0;4>d;d++)H.transformMat2(h[d],h[d],f);for(t.boxFromPatches.showBB&&g.drawPath(h,{x:0,y:1},F.ctx.binary,{color:"#ff0000",lineWidth:2}),d=0;4>d;d++)H.scale(h[d],h[d],i);return h}function l(){b.otsuThreshold(u,B),B.zeroBorder(),t.showCanvas&&B.show(F.dom.binary,255)}function m(){var a,b,d,e,h,i,j,k,l=[];for(a=0;a<G.x;a++)for(b=0;b<G.y;b++)d=w.size.x*a,e=w.size.y*b,q(d,e),v.zeroBorder(),f.init(x.data,0),i=c.create(v,x),j=i.rasterize(0),t.showLabels&&x.overlay(F.dom.binary,Math.floor(360/j.count),{x:d,y:e}),h=x.moments(j.count),l=l.concat(r(h,[a,b],d,e));if(t.showFoundPatches)for(a=0;a<l.length;a++)k=l[a],g.drawRect(k.pos,w.size,F.ctx.binary,{color:"#99ff00",lineWidth:2});return l}function n(a){var b,c,d=[],e=[];for(b=0;a>b;b++)d.push(0);for(c=z.data.length;c--;)z.data[c]>0&&d[z.data[c]-1]++;return d=d.map(function(a,b){return{val:a,label:b+1}}),d.sort(function(a,b){return b.val-a.val}),e=d.filter(function(a){return a.val>=5})}function o(a,c){var d,e,f,h,i,j=[],l=[],m=[0,1,1],n=[0,0,0];for(d=0;d<a.length;d++){for(f=z.data.length,j.length=0;f--;)z.data[f]===a[d].label&&(h=A.data[f],j.push(h));if(i=k(j),i&&(l.push(i),t.showRemainingPatchLabels))for(e=0;e<j.length;e++)h=j[e],m[0]=a[d].label/(c+1)*360,b.hsv2rgb(m,n),g.drawRect(h.pos,w.size,F.ctx.binary,{color:"rgb("+n.join(",")+")",lineWidth:2})}return l}function p(a){var c=b.cluster(a,.9),d=b.topGeneric(c,1,function(a){return a.getPoints().length}),e=[],f=[];if(1===d.length){e=d[0].item.getPoints();for(var g=0;g<e.length;g++)f.push(e[g].point)}return f}function q(a,c){B.subImageAsCopy(w,b.imageRef(a,c)),E.skeletonize(),t.showSkeleton&&v.overlay(F.dom.binary,360,b.imageRef(a,c))}function r(a,b,c,d){var e,f,g,h,i=0,j=[],k=[],l=Math.ceil(C.x/3);if(a.length>=2){for(e=0;e<a.length;e++)a[e].m00>l&&j.push(a[e]);if(j.length>=2){for(i=j.length,g=p(j),f=0,e=0;e<g.length;e++)f+=g[e].rad;g.length>1&&g.length>=j.length/4*3&&g.length>a.length/4&&(f/=g.length,h={index:b[1]*G.x+b[0],pos:{x:c,y:d},box:[H.clone([c,d]),H.clone([c+w.size.x,d]),H.clone([c+w.size.x,d+w.size.y]),H.clone([c,d+w.size.y])],moments:g,rad:f,vec:H.clone([Math.cos(f),Math.sin(f)])},k.push(h))}}return k}function s(a){function c(){var a;for(a=0;a<z.data.length;a++)if(0===z.data[a]&&1===y.data[a])return a;return z.length}function e(a){var b,c,f,g,h,i,l,m={x:a%z.size.x,y:a/z.size.x|0};if(a<z.data.length)for(f=A.data[a],z.data[a]=j,i=0;i<d.searchDirections.length;i++)c=m.y+d.searchDirections[i][0],b=m.x+d.searchDirections[i][1],h=c*z.size.x+b,0!==y.data[h]?(g=A.data[h],0===z.data[h]&&(l=Math.abs(H.dot(g.vec,f.vec)),l>k&&e(h))):z.data[h]=Number.MAX_VALUE}var h,i,j=0,k=.95,l=0,m=[0,1,1],n=[0,0,0];for(f.init(y.data,0),f.init(z.data,0),f.init(A.data,null),h=0;h<a.length;h++)i=a[h],A.data[i.index]=i,y.data[i.index]=1;for(y.zeroBorder();(l=c())<z.data.length;)j++,e(l);if(t.showPatchLabels)for(h=0;h<z.data.length;h++)z.data[h]>0&&z.data[h]<=j&&(i=A.data[h],m[0]=z.data[h]/(j+1)*360,b.hsv2rgb(m,n),g.drawRect(i.pos,w.size,F.ctx.binary,{color:"rgb("+n.join(",")+")",lineWidth:2}));return j}var t,u,v,w,x,y,z,A,B,C,D,E,F={ctx:{binary:null},dom:{binary:null}},G={x:0,y:0},H=h.vec2,I=h.mat2,J=this;return{init:function(a,b){t=b,D=a,i(),j()},locate:function(){var a,c,d;if(t.halfSample&&b.halfSample(D,u),l(),a=m(),a.length<G.x*G.y*.05)return null;var e=s(a);return 1>e?null:(c=n(e),0===c.length?null:d=o(c,e))},checkImageConstraints:function(a,c){var d,e,f,g=a.getWidth(),h=a.getHeight(),i=c.halfSample?.5:1;if(a.getConfig().area&&(f=b.computeImageArea(g,h,a.getConfig().area),a.setTopRight({x:f.sx,y:f.sy}),a.setCanvasSize({x:g,y:h}),g=f.sw,h=f.sh),e={x:Math.floor(g*i),y:Math.floor(h*i)},d=b.calculatePatchSize(c.patchSize,e),console.log("Patch-Size: "+JSON.stringify(d)),a.setWidth(Math.floor(Math.floor(e.x/d.x)*(1/i)*d.x)),a.setHeight(Math.floor(Math.floor(e.y/d.y)*(1/i)*d.y)),a.getWidth()%d.x===0&&a.getHeight()%d.y===0)return!0;throw new Error("Image dimensions do not comply with the current settings: Width ("+g+" )and height ("+h+") must a multiple of "+d.x)}}}),d("bresenham",["cv_utils","image_wrapper"],function(a,b){var c={},d={DIR:{UP:1,DOWN:-1}};return c.getBarcodeLine=function(a,b,c){function d(a,b){l=s[b*t+a],u+=l,v=v>l?l:v,w=l>w?l:w,r.push(l)}var e,f,g,h,i,j,k,l,m=0|b.x,n=0|b.y,o=0|c.x,p=0|c.y,q=Math.abs(p-n)>Math.abs(o-m),r=[],s=a.data,t=a.size.x,u=0,v=255,w=0;for(q&&(j=m,m=n,n=j,j=o,o=p,p=j),m>o&&(j=m,m=o,o=j,j=n,n=p,p=j),e=o-m,f=Math.abs(p-n),g=e/2|0,i=n,h=p>n?1:-1,k=m;o>k;k++)q?d(i,k):d(k,i),g-=f,0>g&&(i+=h,g+=e);return{line:r,min:v,max:w}},c.toOtsuBinaryLine=function(c){var d=c.line,e=new b({x:d.length-1,y:1},d),f=a.determineOtsuThreshold(e,5);return d=a.sharpenLine(d),a.thresholdImage(e,f),{line:d,threshold:f}},c.toBinaryLine=function(a){var b,c,e,f,g,h=a.min,i=a.max,j=a.line,k=h+(i-h)/2,l=[],m=(i-h)/12,n=-m;for(c=j[0]>k?d.DIR.UP:d.DIR.DOWN,l.push({pos:0,val:j[0]}),f=0;f<j.length-1;f++)b=j[f+1]-j[f],e=n>b&&j[f+1]<1.5*k?d.DIR.DOWN:b>m&&j[f+1]>.5*k?d.DIR.UP:c,c!==e&&(l.push({pos:f,val:j[f]}),c=e);for(l.push({pos:j.length,val:j[j.length-1]}),g=l[0].pos;g<l[1].pos;g++)j[g]=j[g]>k?0:1;for(f=1;f<l.length-1;f++)for(m=l[f+1].val>l[f].val?l[f].val+(l[f+1].val-l[f].val)/3*2|0:l[f+1].val+(l[f].val-l[f+1].val)/3|0,g=l[f].pos;g<l[f+1].pos;g++)j[g]=j[g]>m?0:1;return{line:j,threshold:m}},c.debug={printFrequency:function(a,b){var c,d=b.getContext("2d");for(b.width=a.length,b.height=256,d.beginPath(),d.strokeStyle="blue",c=0;c<a.length;c++)d.moveTo(c,255),d.lineTo(c,255-a[c]);d.stroke(),d.closePath()},printPattern:function(a,b){var c,d=b.getContext("2d");for(b.width=a.length,d.fillColor="black",c=0;c<a.length;c++)1===a[c]&&d.fillRect(c,0,1,100)}},c}),d("code_39_reader",["./barcode_reader","./array_helper"],function(a,b){function c(){a.call(this)}var d={ALPHABETH_STRING:{value:"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%"},ALPHABET:{value:[48,49,50,51,52,53,54,55,56,57,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,45,46,32,42,36,47,43,37]},CHARACTER_ENCODINGS:{value:[52,289,97,352,49,304,112,37,292,100,265,73,328,25,280,88,13,268,76,28,259,67,322,19,274,82,7,262,70,22,385,193,448,145,400,208,133,388,196,148,168,162,138,42]},ASTERISK:{value:148}};return c.prototype=Object.create(a.prototype,d),c.prototype.constructor=c,c.prototype._toCounters=function(a,c){var d,e=this,f=c.length,g=e._row.length,h=!e._row[a],i=0;for(b.init(c,0),d=a;g>d;d++)if(e._row[d]^h)c[i]++;else{if(i++,i===f)break;c[i]=1,h=!h}return c},c.prototype._decode=function(){var a,c,d,e,f=this,g=[0,0,0,0,0,0,0,0,0],h=[],i=f._findStart();if(!i)return null;e=f._nextSet(f._row,i.end);do{if(g=f._toCounters(e,g),d=f._toPattern(g),0>d)return null;if(a=f._patternToChar(d),0>a)return null;h.push(a),c=e,e+=b.sum(g),e=f._nextSet(f._row,e)}while("*"!==a);return h.pop(),h.length&&f._verifyTrailingWhitespace(c,e,g)?{code:h.join(""),start:i.start,end:e,startInfo:i,decodedCodes:h}:null},c.prototype._verifyTrailingWhitespace=function(a,c,d){var e,f=b.sum(d);return e=c-a-f,3*e>=f?!0:!1},c.prototype._patternToChar=function(a){var b,c=this;for(b=0;b<c.CHARACTER_ENCODINGS.length;b++)if(c.CHARACTER_ENCODINGS[b]===a)return String.fromCharCode(c.ALPHABET[b])},c.prototype._findNextWidth=function(a,b){var c,d=Number.MAX_VALUE;for(c=0;c<a.length;c++)a[c]<d&&a[c]>b&&(d=a[c]);return d},c.prototype._toPattern=function(a){for(var b,c,d=a.length,e=0,f=d,g=0,h=this;f>3;){for(e=h._findNextWidth(a,e),f=0,b=0,c=0;d>c;c++)a[c]>e&&(b|=1<<d-1-c,f++,g+=a[c]);if(3===f){for(c=0;d>c&&f>0;c++)if(a[c]>e&&(f--,2*a[c]>=g))return-1;return b}}return-1},c.prototype._findStart=function(){var a,b,c,d=this,e=d._nextSet(d._row),f=e,g=[0,0,0,0,0,0,0,0,0],h=0,i=!1;for(a=e;a<d._row.length;a++)if(d._row[a]^i)g[h]++;else{if(h===g.length-1){if(d._toPattern(g)===d.ASTERISK&&(c=Math.floor(Math.max(0,f-(a-f)/4)),d._matchRange(c,f,0)))return{start:f,end:a};for(f+=g[0]+g[1],b=0;7>b;b++)g[b]=g[b+2];g[7]=0,g[8]=0,h--}else h++;g[h]=1,i=!i}return null},c}),d("code_39_vin_reader",["./code_39_reader"],function(a){function b(){a.call(this)}var c={IOQ:/[IOQ]/g,AZ09:/[A-Z0-9]{17}/};return b.prototype=Object.create(a.prototype),b.prototype.constructor=b,b.prototype._decode=function(){var b=a.prototype._decode.apply(this);if(!b)return null;var d=b.code;if(d)return d=d.replace(c.IOQ,""),d.match(c.AZ09)?this._checkChecksum(d)?(b.code=d,b):null:(console.log("Failed AZ09 pattern code:",d),null)},b.prototype._checkChecksum=function(a){return!!a},b}),d("codabar_reader",["./barcode_reader"],function(a){function b(){a.call(this),this._counters=[]}var c={ALPHABETH_STRING:{value:"0123456789-$:/.+ABCD"},ALPHABET:{value:[48,49,50,51,52,53,54,55,56,57,45,36,58,47,46,43,65,66,67,68]},CHARACTER_ENCODINGS:{value:[3,6,9,96,18,66,33,36,48,72,12,24,69,81,84,21,26,41,11,14]},START_END:{value:[26,41,11,14]},MIN_ENCODED_CHARS:{value:4},MAX_ACCEPTABLE:{value:2},PADDING:{value:1.5}};return b.prototype=Object.create(a.prototype,c),b.prototype.constructor=b,b.prototype._decode=function(){var a,b,c,d,e,f=this,g=[];if(f._fillCounters(),a=f._findStart(),!a)return null;d=a.startCounter;do{if(c=f._toPattern(d),0>c)return null;if(b=f._patternToChar(c),0>b)return null;if(g.push(b),d+=8,g.length>1&&f._isStartEnd(c))break}while(d<f._counters.length);return g.length-2<f.MIN_ENCODED_CHARS||!f._isStartEnd(c)?null:f._verifyWhitespace(a.startCounter,d-8)&&f._validateResult(g,a.startCounter)?(d=d>f._counters.length?f._counters.length:d,e=a.start+f._sumCounters(a.startCounter,d-8),{code:g.join(""),start:a.start,end:e,startInfo:a,decodedCodes:g}):null},b.prototype._verifyWhitespace=function(a,b){return(0>=a-1||this._counters[a-1]>=this._calculatePatternLength(a)/2)&&(b+8>=this._counters.length||this._counters[b+7]>=this._calculatePatternLength(b)/2)?!0:!1},b.prototype._calculatePatternLength=function(a){var b,c=0;for(b=a;a+7>b;b++)c+=this._counters[b];return c},b.prototype._thresholdResultPattern=function(a,b){var c,d,e,f,g,h=this,i={space:{narrow:{size:0,counts:0,min:0,max:Number.MAX_VALUE},wide:{size:0,counts:0,min:0,max:Number.MAX_VALUE}},bar:{narrow:{size:0,counts:0,min:0,max:Number.MAX_VALUE},wide:{size:0,counts:0,min:0,max:Number.MAX_VALUE}}},j=b;for(e=0;e<a.length;e++){for(g=h._charToPattern(a[e]),f=6;f>=0;f--)c=2===(1&f)?i.bar:i.space,d=1===(1&g)?c.wide:c.narrow,d.size+=h._counters[j+f],d.counts++,g>>=1;j+=8}return["space","bar"].forEach(function(a){var b=i[a];b.wide.min=Math.floor((b.narrow.size/b.narrow.counts+b.wide.size/b.wide.counts)/2),b.narrow.max=Math.ceil(b.wide.min),b.wide.max=Math.ceil((b.wide.size*h.MAX_ACCEPTABLE+h.PADDING)/b.wide.counts)}),i},b.prototype._charToPattern=function(a){var b,c=this,d=a.charCodeAt(0);for(b=0;b<c.ALPHABET.length;b++)if(c.ALPHABET[b]===d)return c.CHARACTER_ENCODINGS[b];return 0},b.prototype._validateResult=function(a,b){var c,d,e,f,g,h,i=this,j=i._thresholdResultPattern(a,b),k=b;for(c=0;c<a.length;c++){for(h=i._charToPattern(a[c]),d=6;d>=0;d--){if(e=0===(1&d)?j.bar:j.space,f=1===(1&h)?e.wide:e.narrow,g=i._counters[k+d],g<f.min||g>f.max)return!1;h>>=1}k+=8}return!0},b.prototype._fillCounters=function(){var a,b=this,c=0,d=!0,e=b._nextUnset(b._row);for(b._counters.length=0,b._counters[c]=0,a=e;a<b._row.length;a++)b._row[a]^d?this._counters[c]++:(c++,this._counters[c]=1,d=!d)},b.prototype._patternToChar=function(a){var b,c=this;for(b=0;b<c.CHARACTER_ENCODINGS.length;b++)if(c.CHARACTER_ENCODINGS[b]===a)return String.fromCharCode(c.ALPHABET[b]);return-1},b.prototype._computeAlternatingThreshold=function(a,b){var c,d,e=Number.MAX_VALUE,f=0;for(c=a;b>c;c+=2)d=this._counters[c],d>f&&(f=d),e>d&&(e=d);return(e+f)/2|0},b.prototype._toPattern=function(a){var b,c,d,e,f=7,g=a+f,h=1<<f-1,i=0;if(g>this._counters.length)return-1;for(b=this._computeAlternatingThreshold(a,g),c=this._computeAlternatingThreshold(a+1,g),d=0;f>d;d++)e=0===(1&d)?b:c,this._counters[a+d]>e&&(i|=h),h>>=1;return i},b.prototype._isStartEnd=function(a){var b;for(b=0;b<this.START_END.length;b++)if(this.START_END[b]===a)return!0;return!1},b.prototype._sumCounters=function(a,b){var c,d=0;for(c=a;b>c;c++)d+=this._counters[c];return d},b.prototype._findStart=function(){var a,b,c,d=this,e=d._nextUnset(d._row);for(a=1;a<this._counters.length;a++)if(b=d._toPattern(a),-1!==b&&d._isStartEnd(b))return e+=d._sumCounters(0,a),c=e+d._sumCounters(a,a+8),{start:e,end:c,startCounter:a,endCounter:a+8}},b}),d("upc_reader",["./ean_reader"],function(a){function b(){a.call(this)}return b.prototype=Object.create(a.prototype),b.prototype.constructor=b,b.prototype._decode=function(){var b=a.prototype._decode.call(this);return b&&b.code&&13===b.code.length&&"0"===b.code.charAt(0)?(b.code=b.code.substring(1),b):null},b}),d("ean_8_reader",["./ean_reader"],function(a){function b(){a.call(this)}return b.prototype=Object.create(a.prototype),b.prototype.constructor=b,b.prototype._decodePayload=function(a,b,c){var d,e=this;for(d=0;4>d;d++){if(a=e._decodeCode(a.end,e.CODE_G_START),!a)return null;b.push(a.code),c.push(a)}if(a=e._findPattern(e.MIDDLE_PATTERN,a.end,!0),null===a)return null;for(c.push(a),d=0;4>d;d++){if(a=e._decodeCode(a.end,e.CODE_G_START),!a)return null;c.push(a),b.push(a.code)}return a},b}),d("upc_e_reader",["./ean_reader"],function(a){function b(){a.call(this)}var c={CODE_FREQUENCY:{value:[[56,52,50,49,44,38,35,42,41,37],[7,11,13,14,19,25,28,21,22,26]]},STOP_PATTERN:{value:[1/6*7,1/6*7,1/6*7,1/6*7,1/6*7,1/6*7]}};return b.prototype=Object.create(a.prototype,c),b.prototype.constructor=b,b.prototype._decodePayload=function(a,b,c){var d,e=this,f=0;for(d=0;6>d;d++){if(a=e._decodeCode(a.end),!a)return null;a.code>=e.CODE_G_START?(a.code=a.code-e.CODE_G_START,f|=1<<5-d):f|=0<<5-d,b.push(a.code),c.push(a)}return e._determineParity(f,b),a},b.prototype._determineParity=function(a,b){var c,d,e=this;for(d=0;d<e.CODE_FREQUENCY.length;d++)for(c=0;c<e.CODE_FREQUENCY[d].length;c++)if(a===e.CODE_FREQUENCY[d][c])return b.unshift(d),void b.push(c)},b.prototype._convertToUPCA=function(a){var b=[a[0]],c=a[a.length-2];return b=2>=c?b.concat(a.slice(1,3)).concat([c,0,0,0,0]).concat(a.slice(3,6)):3===c?b.concat(a.slice(1,4)).concat([0,0,0,0,0]).concat(a.slice(4,6)):4===c?b.concat(a.slice(1,5)).concat([0,0,0,0,0,a[5]]):b.concat(a.slice(1,6)).concat([0,0,0,0,c]),b.push(a[a.length-1]),b},b.prototype._checksum=function(b){return a.prototype._checksum.call(this,this._convertToUPCA(b))},b.prototype._findEnd=function(b,c){return c=!0,a.prototype._findEnd.call(this,b,c)},b.prototype._verifyTrailingWhitespace=function(a){var b,c=this;return b=a.end+(a.end-a.start)/2,b<c._row.length&&c._matchRange(a.end,b,0)?a:void 0},b}),d("barcode_decoder",["bresenham","image_debug","code_128_reader","ean_reader","code_39_reader","code_39_vin_reader","codabar_reader","upc_reader","ean_8_reader","upc_e_reader"],function(a,b,c,d,e,f,g,h,i,j){var k={code_128_reader:c,ean_reader:d,ean_8_reader:i,code_39_reader:e,code_39_vin_reader:f,codabar_reader:g,upc_reader:h,upc_e_reader:j},l={create:function(c,d){function e(){if("undefined"!=typeof document){var a=document.querySelector("#debug.detection");o.dom.frequency=document.querySelector("canvas.frequency"),o.dom.frequency||(o.dom.frequency=document.createElement("canvas"),o.dom.frequency.className="frequency",a&&a.appendChild(o.dom.frequency)),o.ctx.frequency=o.dom.frequency.getContext("2d"),o.dom.pattern=document.querySelector("canvas.patternBuffer"),o.dom.pattern||(o.dom.pattern=document.createElement("canvas"),o.dom.pattern.className="patternBuffer",a&&a.appendChild(o.dom.pattern)),o.ctx.pattern=o.dom.pattern.getContext("2d"),o.dom.overlay=document.querySelector("canvas.drawingBuffer"),o.dom.overlay&&(o.ctx.overlay=o.dom.overlay.getContext("2d"))}}function f(){var a;for(a=0;a<c.readers.length;a++)console.log(c.readers[a]),p.push(new k[c.readers[a]])}function g(){if("undefined"!=typeof document){var a,b=[{node:o.dom.frequency,prop:c.showFrequency},{node:o.dom.pattern,prop:c.showPattern}];for(a=0;a<b.length;a++)b[a].node.style.display=b[a].prop===!0?"block":"none"}}function h(a,b,c){function e(c){var d={y:c*Math.sin(b),x:c*Math.cos(b)};a[0].y-=d.y,a[0].x-=d.x,a[1].y+=d.y,a[1].x+=d.x}for(e(c);c>1&&!d.inImageWithBorder(a[0],0)||!d.inImageWithBorder(a[1],0);)c-=Math.floor(c/2),e(-c);return 1>=c?null:a}function i(a){return[{x:(a[1][0]-a[0][0])/2+a[0][0],y:(a[1][1]-a[0][1])/2+a[0][1]},{x:(a[3][0]-a[2][0])/2+a[2][0],y:(a[3][1]-a[2][1])/2+a[2][1]}]}function j(e){var f,g=null,h=a.getBarcodeLine(d,e[0],e[1]);for(c.showFrequency&&(b.drawPath(e,{x:"x",y:"y"},o.ctx.overlay,{color:"red",lineWidth:3}),a.debug.printFrequency(h.line,o.dom.frequency)),a.toBinaryLine(h),c.showPattern&&a.debug.printPattern(h.line,o.dom.pattern),f=0;f<p.length&&null===g;f++)g=p[f].decodePattern(h.line),null!==g&&(q=p[f]);return null===g?null:{codeResult:g,barcodeLine:h}}function l(a,b,c){var d,e,f,g=Math.sqrt(Math.pow(a[1][0]-a[0][0],2)+Math.pow(a[1][1]-a[0][1],2)),h=16,i=null,k=Math.sin(c),l=Math.cos(c);for(d=1;h>d&&null===i;d++)e=g/h*d*(d%2===0?-1:1),f={y:e*k,x:e*l},b[0].y+=f.x,b[0].x-=f.y,b[1].y+=f.x,b[1].x-=f.y,i=j(b);return i}function m(a){return Math.sqrt(Math.pow(Math.abs(a[1].y-a[0].y),2)+Math.pow(Math.abs(a[1].x-a[0].x),2))}function n(a){var d,e,f,g,k=o.ctx.overlay;return c.drawBoundingBox&&k&&b.drawPath(a,{x:0,y:1},k,{color:"blue",lineWidth:2}),d=i(a),g=m(d),e=Math.atan2(d[1].y-d[0].y,d[1].x-d[0].x),d=h(d,e,Math.floor(.1*g)),null===d?null:(f=j(d),null===f&&(f=l(a,d,e)),null===f?null:(f&&c.drawScanline&&k&&b.drawPath(d,{x:"x",y:"y"},k,{color:"red",lineWidth:3}),{codeResult:f.codeResult,line:d,angle:e,pattern:f.barcodeLine.line,threshold:f.barcodeLine.threshold}))}var o={ctx:{frequency:null,pattern:null,overlay:null},dom:{frequency:null,pattern:null,overlay:null}},p=[],q=null;return e(),f(),g(),{decodeFromBoundingBox:function(a){return n(a)},decodeFromBoundingBoxes:function(a){var b,c;for(b=0;b<a.length;b++)if(c=n(a[b]),c&&c.codeResult)return c.box=a[b],c},setReaders:function(a){c.readers=a,p.length=0,f()}}}};return l}),d("frame_grabber",["cv_utils"],function(a){var b={};return b.create=function(b,c){var d,e={},f=b.getConfig(),g=a.imageRef(b.getRealWidth(),b.getRealHeight()),h=b.getCanvasSize(),i=a.imageRef(b.getWidth(),b.getHeight()),j=b.getTopRight(),k=j.x,l=j.y,m=null,n=null;return d=c?c:document.createElement("canvas"),d.width=h.x,d.height=h.y,m=d.getContext("2d"),n=new Uint8Array(i.x*i.y),console.log("FrameGrabber",JSON.stringify({size:i,topRight:j,videoSize:g,canvasSize:h})),e.attachData=function(a){n=a},e.getData=function(){return n},e.grab=function(){var c,d=f.halfSample,e=b.getFrame();return e?(m.drawImage(e,0,0,h.x,h.y),c=m.getImageData(k,l,i.x,i.y).data,d?a.grayAndHalfSampleFromCanvasData(c,i,n):a.computeGray(c,n),!0):!1},e.getSize=function(){return i},e},b}),d("html_utils",[],function(){function a(a){var b=document.createElement("div");for(b.innerHTML=a;b.firstChild;)return b.firstChild}function b(a,c){for(var d in c)try{a[d]=c[d].constructor==Object?b(a[d],c[d]):c[d]}catch(e){a[d]=c[d]}return a}return{createNode:function(b){return a(b)},mergeObjects:function(a,c){return b(a,c)}}}),d("config",[],function(){var a={inputStream:{name:"Live",type:"LiveStream",constraints:{width:640,height:480,minAspectRatio:0,maxAspectRatio:100,facing:"environment"},area:{top:"0%",right:"0%",left:"0%",bottom:"0%"}},tracking:!1,debug:!1,controls:!1,locate:!0,numOfWorkers:4,visual:{show:!0},decoder:{drawBoundingBox:!1,showFrequency:!1,drawScanline:!1,showPattern:!1,readers:["code_128_reader"]},locator:{halfSample:!0,patchSize:"medium",showCanvas:!1,showPatches:!1,showFoundPatches:!1,showSkeleton:!1,showLabels:!1,showPatchLabels:!1,showRemainingPatchLabels:!1,boxFromPatches:{showTransformed:!1,showTransformedBox:!1,showBB:!1}}};return a}),d("events",[],function(){var a=function(){function a(a){return e[a]||(e[a]={subscribers:[]}),e[a]}function b(){e={}}function c(a,b){a.async?setTimeout(function(){a.callback(b)},4):a.callback(b)}function d(b,c,d){var e;if("function"==typeof c)e={callback:c,async:d};else if(e=c,!e.callback)throw"Callback was not specified on options";a(b).subscribers.push(e)}var e={};return{subscribe:function(a,b,c){return d(a,b,c)},publish:function(b,d){var e=a(b),f=e.subscribers;e.subscribers=f.filter(function(a){return c(a,d),!a.once})},once:function(a,b,c){d(a,{callback:b,async:c,once:!0})},unsubscribe:function(c,d){var e;c?(e=a(c),e.subscribers=e&&d?e.subscribers.filter(function(a){return a.callback!==d}):[]):b()}}}();return a}),d("camera_access",["html_utils"],function(a){function b(a,b,c){navigator.getUserMedia(a,function(a){g=a;var c=window.URL&&window.URL.createObjectURL(a)||a;b.apply(null,[c])},c)}function c(a,b){function c(){d>0?a.videoWidth>0&&a.videoHeight>0?(console.log(a.videoWidth+"px x "+a.videoHeight+"px"),b()):window.setTimeout(c,500):b("Unable to play video stream. Is webcam working?"),d--}var d=10;c()}function d(a,d,e){b(a,function(a){d.src=a,h&&d.removeEventListener("loadeddata",h,!1),h=c.bind(null,d,e),d.addEventListener("loadeddata",h,!1),d.play()},function(a){console.log(a)})}function e(b,c){var d={audio:!1,video:!0},e=a.mergeObjects({width:640,height:480,minAspectRatio:0,maxAspectRatio:100,facing:"environment"},b);return"undefined"==typeof MediaStreamTrack.getSources?(d.video={mediaSource:"camera",width:{min:e.width,max:e.width},height:{min:e.height,max:e.height},require:["width","height"]},c(d)):void MediaStreamTrack.getSources(function(a){for(var b,f=0;f!=a.length;++f){var g=a[f];"video"==g.kind&&g.facing==e.facing&&(b=g.id)}return d.video={mandatory:{minWidth:e.width,minHeight:e.height,minAspectRatio:e.minAspectRatio,maxAspectRatio:e.maxAspectRatio},optional:[{sourceId:b}]},c(d)})}function f(a,b,c){e(b,function(b){d(b,a,c)})}var g,h;return{request:function(a,b,c){f(a,b,c)},release:function(){var a=g&&g.getVideoTracks();a.length&&a[0].stop(),g=null}}}),d("quagga",["code_128_reader","ean_reader","input_stream","image_wrapper","barcode_locator","barcode_decoder","frame_grabber","html_utils","config","events","camera_access","image_debug","gl-matrix"],function(b,c,d,e,f,g,h,i,j,k,l,m,n){function o(a){u(a),L=g.create(j.decoder,J)}function p(){if("undefined"!=typeof document)for(var a=[{node:document.querySelector("div[data-controls]"),prop:j.controls},{node:M.dom.overlay,prop:j.visual.show}],b=0;b<a.length;b++)a[b].node&&(a[b].node.style.display=a[b].prop===!0?"block":"none")}function q(a){var b;if("VideoStream"==j.inputStream.type)b=document.createElement("video"),G=d.createVideoStream(b);else if("ImageStream"==j.inputStream.type)G=d.createImageStream();else if("LiveStream"==j.inputStream.type){var c=document.querySelector("#interactive.viewport");c&&(b=c.querySelector("video"),b||(b=document.createElement("video"),c.appendChild(b))),G=d.createLiveStream(b),l.request(b,j.inputStream.constraints,function(a){a?console.log(a):G.trigger("canrecord")})}G.setAttribute("preload","auto"),G.setAttribute("autoplay",!0),G.setInputStream(j.inputStream),G.addEventListener("canrecord",r.bind(void 0,a))}function r(a){j.locate&&f.checkImageConstraints(G,j.locator),t(),H=h.create(G,M.dom.image),p(),j.numOfWorkers>0?B(function(){console.log("Workers created"),s(a)}):(o(),s(a))}function s(a){G.play(),a()}function t(){if("undefined"!=typeof document){var a=document.querySelector("#interactive.viewport");if(M.dom.image=document.querySelector("canvas.imgBuffer"),M.dom.image||(M.dom.image=document.createElement("canvas"),M.dom.image.className="imgBuffer",a&&"ImageStream"==j.inputStream.type&&a.appendChild(M.dom.image)),M.ctx.image=M.dom.image.getContext("2d"),M.dom.image.width=G.getCanvasSize().x,M.dom.image.height=G.getCanvasSize().y,M.dom.overlay=document.querySelector("canvas.drawingBuffer"),!M.dom.overlay){M.dom.overlay=document.createElement("canvas"),M.dom.overlay.className="drawingBuffer",a&&a.appendChild(M.dom.overlay);var b=document.createElement("br");b.setAttribute("clear","all"),a&&a.appendChild(b)}M.ctx.overlay=M.dom.overlay.getContext("2d"),M.dom.overlay.width=G.getCanvasSize().x,M.dom.overlay.height=G.getCanvasSize().y}}function u(a){J=a?a:new e({x:G.getWidth(),y:G.getHeight()}),console.log(J.size),K=[P.clone([20,J.size.y/2-100]),P.clone([20,J.size.y/2+100]),P.clone([J.size.x-20,J.size.y/2+100]),P.clone([J.size.x-20,J.size.y/2-100])],f.init(J,j.locator)}function v(){return j.locate?f.locate():[K]}function w(a){function b(a){for(var b=a.length;b--;)a[b][0]+=f,a[b][1]+=g}function c(a){a[0].x+=f,a[0].y+=g,a[1].x+=f,a[1].y+=g}var d,e=G.getTopRight(),f=e.x,g=e.y;if(a&&(0!==f||0!==g)&&(a.line&&2===a.line.length&&c(a.line),a.boxes&&a.boxes.length>0))for(d=0;d<a.boxes.length;d++)b(a.boxes[d])}function x(a){O&&w(a),k.publish("processed",a),a&&a.codeResult&&k.publish("detected",a)}function y(){var a,b;b=v(),b?(a=L.decodeFromBoundingBoxes(b),a=a||{},a.boxes=b,x(a)):x()}function z(){var a;if(O){if(N.length>0){if(a=N.filter(function(a){return!a.busy})[0],!a)return;H.attachData(a.imageData)}else H.attachData(J.data);H.grab()&&(a?(a.busy=!0,a.worker.postMessage({cmd:"process",imageData:a.imageData},[a.imageData.buffer])):y())}else y()}function A(){I=!1,function a(){I||(z(),O&&"LiveStream"==j.inputStream.type&&window.requestAnimFrame(a))}()}function B(a){function b(b){N.push(b),N.length>=j.numOfWorkers&&a()}var c;for(N=[],c=0;c<j.numOfWorkers;c++)C(b)}function C(a){var b,c={worker:null,imageData:new Uint8Array(G.getWidth()*G.getHeight()),busy:!0};b=E(),c.worker=new Worker(b),URL.revokeObjectURL(b),c.worker.onmessage=function(b){return"initialized"===b.data.event?(c.busy=!1,c.imageData=new Uint8Array(b.data.imageData),console.log("Worker initialized"),a(c)):void("processed"===b.data.event&&(c.imageData=new Uint8Array(b.data.imageData),c.busy=!1,x(b.data.result)))},c.worker.postMessage({cmd:"init",size:{x:G.getWidth(),y:G.getHeight()},imageData:c.imageData,config:j},[c.imageData.buffer])}function D(a){function b(a){self.postMessage({event:"processed",imageData:e.data,result:a},[e.data.buffer])}function c(){self.postMessage({event:"initialized",imageData:e.data},[e.data.buffer])}if(a){var d=a();if(!d)return}var e;self.onmessage=function(a){if("init"===a.data.cmd){var f=a.data.config;f.numOfWorkers=0,e=new d.ImageWrapper({x:a.data.size.x,y:a.data.size.y},new Uint8Array(a.data.imageData)),d.init(f,c,e),d.onProcessed(b)}else"process"===a.data.cmd?(e.data=new Uint8Array(a.data.imageData),d.start()):"setReaders"===a.data.cmd&&d.setReaders(a.data.readers)}}function E(){var b,c;return"undefined"!=typeof a&&(c=a),b=new Blob(["("+D.toString()+")("+c+");"],{type:"text/javascript"}),window.URL.createObjectURL(b)}function F(a){L?L.setReaders(a):O&&N.length>0&&N.forEach(function(b){b.worker.postMessage({cmd:"setReaders",readers:a})})}var G,H,I,J,K,L,M={ctx:{image:null,overlay:null},dom:{image:null,overlay:null}},N=[],O=!0,P=n.vec2;return{init:function(a,b,c){return j=i.mergeObjects(j,a),c?(O=!1,o(c),b()):void q(b)},start:function(){A()},stop:function(){I=!0,N.forEach(function(a){a.worker.terminate(),console.log("Worker terminated!")}),N.length=0,"LiveStream"===j.inputStream.type&&(l.release(),G.clearEventHandlers())},pause:function(){I=!0},onDetected:function(a){k.subscribe("detected",a)},onProcessed:function(a){k.subscribe("processed",a)},setReaders:function(a){F(a)},canvas:M,decodeSingle:function(a,b){a=i.mergeObjects({inputStream:{type:"ImageStream",sequence:!1,size:800,src:a.src},numOfWorkers:1,locator:{halfSample:!1}},a),this.init(a,function(){k.once("processed",function(a){I=!0,b.call(null,a)},!0),A()})},Reader:{EANReader:c,Code128Reader:b},ImageWrapper:e,ImageDebug:m}}),c("quagga")});
\ No newline at end of file
diff --git a/example/file_input.js b/example/file_input.js
index 3d374f4..18f37e4 100644
--- a/example/file_input.js
+++ b/example/file_input.js
@@ -107,9 +107,31 @@ $(function() {
     
     App.init();
 
+    function calculateRectFromArea(canvas, area) {
+        var canvasWidth = canvas.width,
+            canvasHeight = canvas.height,
+            top = parseInt(area.top)/100,
+            right = parseInt(area.right)/100,
+            bottom = parseInt(area.bottom)/100,
+            left = parseInt(area.left)/100;
+
+        top *= canvasHeight;
+        right = canvasWidth - canvasWidth*right;
+        bottom = canvasHeight - canvasHeight*bottom;
+        left *= canvasWidth;
+
+        return {
+            x: left,
+            y: top,
+            width: right - left,
+            height: bottom - top
+        };
+    }
+
     Quagga.onProcessed(function(result) {
         var drawingCtx = Quagga.canvas.ctx.overlay,
-            drawingCanvas = Quagga.canvas.dom.overlay;
+            drawingCanvas = Quagga.canvas.dom.overlay,
+            area;
 
         if (result) {
             if (result.boxes) {
@@ -128,7 +150,13 @@ $(function() {
             if (result.codeResult && result.codeResult.code) {
                 Quagga.ImageDebug.drawPath(result.line, {x: 'x', y: 'y'}, drawingCtx, {color: 'red', lineWidth: 3});
             }
-        }
+
+            if (App.state.inputStream.area) {
+                area = calculateRectFromArea(drawingCanvas, App.state.inputStream.area);
+                drawingCtx.strokeStyle = "#0F0";
+                drawingCtx.strokeRect(area.x, area.y, area.width, area.height);
+            }
+    }
     });
 
     Quagga.onDetected(function(result) {
diff --git a/karma-integration.conf.js b/karma-integration.conf.js
index 7c88c41..1874ff7 100644
--- a/karma-integration.conf.js
+++ b/karma-integration.conf.js
@@ -4,9 +4,9 @@ module.exports = function(config) {
     frameworks: ['mocha', 'requirejs', 'chai', 'sinon', 'sinon-chai'],
     files: [
       'test-main.js',
-      'src/vendor/glMatrix.js',
       'src/typedefs.js',
       {pattern: 'node_modules/async/lib/async.js', included: false},
+      {pattern: 'node_modules/gl-matrix/dist/gl-matrix.js', included: false},
       {pattern: 'src/*.js', included: false},
       {pattern: 'spec/**/*integration.spec.js', included: false},
       {pattern: 'test/**/*.*', included: false}
diff --git a/karma.conf.js b/karma.conf.js
index 0d9047a..2da346f 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -4,9 +4,9 @@ module.exports = function(config) {
     frameworks: ['mocha', 'requirejs', 'chai', 'sinon', 'sinon-chai'],
     files: [
       'test-main.js',
-      'src/vendor/glMatrix.js',
       'src/typedefs.js',
       {pattern: 'node_modules/async/lib/async.js', included: false},
+      {pattern: 'node_modules/gl-matrix/dist/gl-matrix.js', included: false},
       {pattern: 'src/*.js', included: false},
       {pattern: 'spec/**/*.js', included: false},
       {pattern: 'test/**/*.*', included: false}
diff --git a/package.json b/package.json
index 7d01fc1..fa8104f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "quagga",
-  "version": "0.6.6",
+  "version": "0.6.8",
   "description": "An advanced barcode-scanner written in JavaScript",
   "main": "lib/quagga.js",
   "browser": "dist/quagga.js",
diff --git a/spec/barcode_locator.spec.js b/spec/barcode_locator.spec.js
new file mode 100644
index 0000000..68f540a
--- /dev/null
+++ b/spec/barcode_locator.spec.js
@@ -0,0 +1,131 @@
+
+define(['barcode_locator', 'config', 'html_utils'],
+    function(BarcodeLocator, Config, HtmlUtils){
+
+    describe('checkImageConstraints', function() {
+        var config,
+            inputStream,
+            imageSize,
+            streamConfig = {};
+
+        beforeEach(function() {
+            imageSize = {
+                x: 640, y: 480
+            };
+            config = HtmlUtils.mergeObjects({}, Config);
+            inputStream = {
+                getWidth: function() {
+                    return imageSize.x;
+                },
+                getHeight: function() {
+                    return imageSize.y;
+                },
+                setWidth: function() {},
+                setHeight: function() {},
+                setTopRight: function() {},
+                setCanvasSize: function() {},
+                getConfig: function() {
+                    return streamConfig;
+                }
+            };
+            sinon.stub(inputStream, "setWidth", function(width) {
+                imageSize.x = width;
+            });
+            sinon.stub(inputStream, "setHeight", function(height) {
+                imageSize.y = height;
+            });
+            sinon.stub(inputStream, "setTopRight");
+            sinon.stub(inputStream, "setCanvasSize");
+        });
+
+        afterEach(function() {
+            inputStream.setWidth.restore();
+            inputStream.setHeight.restore();
+        });
+
+        it('should not adjust the image-size if not needed', function() {
+            var expected = {x: imageSize.x, y: imageSize.y};
+            BarcodeLocator.checkImageConstraints(inputStream, config.locator);
+            expect(inputStream.getWidth()).to.be.equal(expected.x);
+            expect(inputStream.getHeight()).to.be.equal(expected.y);
+        });
+
+        it('should adjust the image-size', function() {
+            var expected = {x: imageSize.x, y: imageSize.y};
+
+            config.locator.halfSample = true;
+            imageSize.y += 1;
+            BarcodeLocator.checkImageConstraints(inputStream, config.locator);
+            expect(inputStream.getWidth()).to.be.equal(expected.x);
+            expect(inputStream.getHeight()).to.be.equal(expected.y);
+        });
+
+        it('should adjust the image-size', function() {
+            var expected = {x: imageSize.x, y: imageSize.y};
+
+            imageSize.y += 1;
+            config.locator.halfSample = false;
+            BarcodeLocator.checkImageConstraints(inputStream, config.locator);
+            expect(inputStream.getHeight()).to.be.equal(expected.y);
+            expect(inputStream.getWidth()).to.be.equal(expected.x);
+        });
+
+        it("should take the defined area into account", function() {
+            var expectedSize = {
+                    x: 420,
+                    y: 315
+                },
+                expectedTopRight = {
+                    x: 115,
+                    y: 52
+                },
+                expectedCanvasSize = {
+                    x: 640,
+                    y: 480
+                };
+
+            streamConfig.area = {
+                top: "11%",
+                right: "15%",
+                bottom: "20%",
+                left: "18%"
+            };
+
+            config.locator.halfSample = false;
+            BarcodeLocator.checkImageConstraints(inputStream, config.locator);
+            expect(inputStream.getHeight()).to.be.equal(expectedSize.y);
+            expect(inputStream.getWidth()).to.be.equal(expectedSize.x);
+            expect(inputStream.setTopRight.getCall(0).args[0]).to.deep.equal(expectedTopRight);
+            expect(inputStream.setCanvasSize.getCall(0).args[0]).to.deep.equal(expectedCanvasSize);
+        });
+
+        it("should return the original size if set to full image", function() {
+            var expectedSize = {
+                    x: 640,
+                    y: 480
+                },
+                expectedTopRight = {
+                    x: 0,
+                    y: 0
+                },
+                expectedCanvasSize = {
+                    x: 640,
+                    y: 480
+                };
+
+            streamConfig.area = {
+                top: "0%",
+                right: "0%",
+                bottom: "0%",
+                left: "0%"
+            };
+
+            config.locator.halfSample = false;
+            BarcodeLocator.checkImageConstraints(inputStream, config.locator);
+            expect(inputStream.getHeight()).to.be.equal(expectedSize.y);
+            expect(inputStream.getWidth()).to.be.equal(expectedSize.x);
+            expect(inputStream.setTopRight.getCall(0).args[0]).to.deep.equal(expectedTopRight);
+            expect(inputStream.setCanvasSize.getCall(0).args[0]).to.deep.equal(expectedCanvasSize);
+        });
+    });
+});
diff --git a/spec/cv_utils.spec.js b/spec/cv_utils.spec.js
index 2282b01..d490e9c 100644
--- a/spec/cv_utils.spec.js
+++ b/spec/cv_utils.spec.js
@@ -8,4 +8,138 @@ define(['cv_utils'], function(CVUtils){
             expect(res.toVec2()[0]).to.equal(1);
         });
     });
+
+    describe('calculatePatchSize', function() {
+        it('should not throw an error in case of valid image size', function() {
+            var expected = {x: 32, y: 32},
+                patchSize = CVUtils.calculatePatchSize("medium", {x: 640, y: 480});
+
+            expect(patchSize).to.be.deep.equal(expected);
+        });
+
+        it('should thow an error if image size it not valid', function() {
+            var expected = {x: 32, y: 32},
+                patchSize = CVUtils.calculatePatchSize("medium", {x: 640, y: 480});
+
+            expect(patchSize).to.be.deep.equal(expected);
+        });
+    });
+
+    describe('_parseCSSDimensionValues', function() {
+        it("should convert a percentual value correctly", function() {
+            var expected = {
+                    value: 10,
+                    unit: "%"
+                },
+                result = CVUtils._parseCSSDimensionValues("10%");
+
+            expect(result).to.be.deep.equal(expected);
+        });
+
+        it("should convert a 0% value correctly", function() {
+            var expected = {
+                    value: 100,
+                    unit: "%"
+                },
+                result = CVUtils._parseCSSDimensionValues("100%");
+
+            expect(result).to.be.deep.equal(expected);
+        });
+
+        it("should convert a 100% value correctly", function() {
+            var expected = {
+                    value: 0,
+                    unit: "%"
+                },
+                result = CVUtils._parseCSSDimensionValues("0%");
+
+            expect(result).to.be.deep.equal(expected);
+        });
+
+        it("should convert a pixel value to percentage", function() {
+            var expected = {
+                    value: 26.3,
+                    unit: "%"
+                },
+                result = CVUtils._parseCSSDimensionValues("26.3px");
+
+            console.log(result);
+            expect(result).to.be.deep.equal(expected);
+        });
+    });
+
+    describe("_dimensionsConverters", function(){
+        var context;
+
+        beforeEach(function() {
+            context = {
+                width: 640,
+                height: 480
+            };
+        });
+
+        it("should convert a top-value correclty", function() {
+            var expected = 48,
+                result = CVUtils._dimensionsConverters.top({value: 10, unit: "%"}, context);
+
+            expect(result).to.be.equal(expected);
+        });
+
+        it("should convert a right-value correclty", function() {
+            var expected = 640 - 128,
+                result = CVUtils._dimensionsConverters.right({value: 20, unit: "%"}, context);
+
+            expect(result).to.be.equal(expected);
+        });
+
+        it("should convert a bottom-value correclty", function() {
+            var expected = 480 - 77,
+                result = CVUtils._dimensionsConverters.bottom({value: 16, unit: "%"}, context);
+
+            expect(result).to.be.equal(expected);
+        });
+
+        it("should convert a left-value correclty", function() {
+            var expected = 57,
+                result = CVUtils._dimensionsConverters.left({value: 9, unit: "%"}, context);
+
+            expect(result).to.be.equal(expected);
+        });
+    });
+
+    describe("computeImageArea", function() {
+        it("should calculate an image-area", function() {
+            var expected = {
+                    sx: 115,
+                    sy: 48,
+                    sw: 429,
+                    sh: 336
+                },
+                result = CVUtils.computeImageArea(640, 480, {
+                    top: "10%",
+                    right: "15%",
+                    bottom: "20%",
+                    left: "18%"
+                });
+
+            expect(result).to.be.deep.equal(expected);
+        });
+
+        it("should calculate full image-area", function() {
+            var expected = {
+                    sx: 0,
+                    sy: 0,
+                    sw: 640,
+                    sh: 480
+                },
+                result = CVUtils.computeImageArea(640, 480, {
+                    top: "0%",
+                    right: "0%",
+                    bottom: "0%",
+                    left: "0%"
+                });
+
+            expect(result).to.be.deep.equal(expected);
+        });
+    });
 });
diff --git a/src/barcode_locator.js b/src/barcode_locator.js
index 6d68fa8..96a5628 100644
--- a/src/barcode_locator.js
+++ b/src/barcode_locator.js
@@ -487,10 +487,11 @@ function(ImageWrapper, CVUtils, Rasterizer, Tracer, skeletonizer, ArrayHelper, I
             initBuffers();
             initCanvas();
         },
+
         locate : function() {
             var patchesFound,
-            topLabels = [],
-            boxes = [];
+            topLabels,
+            boxes;
 
             if (_config.halfSample) {
                 CVUtils.halfSample(_inputImageWrapper, _currentImageWrapper);
@@ -517,6 +518,43 @@ function(ImageWrapper, CVUtils, Rasterizer, Tracer, skeletonizer, ArrayHelper, I
 
             boxes = findBoxes(topLabels, maxLabel);
             return boxes;
+        },
+
+        checkImageConstraints: function(inputStream, config) {
+            var patchSize,
+                width = inputStream.getWidth(),
+                height = inputStream.getHeight(),
+                halfSample = config.halfSample ? 0.5 : 1,
+                size,
+                area;
+
+            // calculate width and height based on area
+            if (inputStream.getConfig().area) {
+                area = CVUtils.computeImageArea(width, height, inputStream.getConfig().area);
+                inputStream.setTopRight({x: area.sx, y: area.sy});
+                inputStream.setCanvasSize({x: width, y: height});
+                width = area.sw;
+                height = area.sh;
+            }
+
+            size = {
+                x: Math.floor(width * halfSample),
+                y: Math.floor(height * halfSample)
+            };
+
+            patchSize = CVUtils.calculatePatchSize(config.patchSize, size);
+            console.log("Patch-Size: " + JSON.stringify(patchSize));
+
+            inputStream.setWidth(Math.floor(Math.floor(size.x/patchSize.x)*(1/halfSample)*patchSize.x));
+            inputStream.setHeight(Math.floor(Math.floor(size.y/patchSize.y)*(1/halfSample)*patchSize.y));
+
+            if ((inputStream.getWidth() % patchSize.x) === 0 && (inputStream.getHeight() % patchSize.y) === 0) {
+                return true;
+            }
+
+            throw new Error("Image dimensions do not comply with the current settings: Width (" +
+                width + " )and height (" + height +
+                ") must a multiple of " + patchSize.x);
         }
     };
 });
diff --git a/src/code_39_reader.js b/src/code_39_reader.js
index 9a9b985..cb228fa 100644
--- a/src/code_39_reader.js
+++ b/src/code_39_reader.js
@@ -82,7 +82,13 @@ define(
             } while(decodedChar !== '*');
             result.pop();
 
+            if (!result.length) {
+                return null;
+            }
 
+            if(!self._verifyTrailingWhitespace(lastStart, nextStart, counters)) {
+                return null;
+            }
 
             return {
                 code : result.join(""),
@@ -93,6 +99,17 @@ define(
             };
         };
 
+        Code39Reader.prototype._verifyTrailingWhitespace = function(lastStart, nextStart, counters) {
+            var trailingWhitespaceEnd,
+                patternSize = ArrayHelper.sum(counters);
+
+            trailingWhitespaceEnd = nextStart - lastStart - patternSize;
+            if ((trailingWhitespaceEnd * 3) >= patternSize) {
+                return true;
+            }
+            return false;
+        };
+
         Code39Reader.prototype._patternToChar = function(pattern) {
             var i,
                 self = this;
diff --git a/src/config.js b/src/config.js
index c7959aa..a394fcc 100644
--- a/src/config.js
+++ b/src/config.js
@@ -12,6 +12,12 @@ define(function(){
               minAspectRatio: 0,
               maxAspectRatio: 100,
               facing: "environment" // or user
+          },
+          area: {
+              top: "0%",
+              right: "0%",
+              left: "0%",
+              bottom: "0%"
           }
       },
       tracking: false,
diff --git a/src/cv_utils.js b/src/cv_utils.js
index 39a37fa..830c250 100644
--- a/src/cv_utils.js
+++ b/src/cv_utils.js
@@ -649,21 +649,64 @@ define(['cluster', "array_helper", "gl-matrix"], function(Cluster2, ArrayHelper,
         optimalPatchSize = findPatchSizeForDivisors(common);
         if (!optimalPatchSize) {
             optimalPatchSize = findPatchSizeForDivisors(this._computeDivisors(wideSide));
-            throw new AdjustToSizeError("", optimalPatchSize);
+            if (!optimalPatchSize) {
+                optimalPatchSize = findPatchSizeForDivisors((this._computeDivisors(desiredPatchSize * nrOfPatches)));
+            }
         }
         return optimalPatchSize;
     };
 
-    function AdjustToSizeError(message, desiredPatchSize) {
-        this.name = 'AdjustToSizeError';
-        this.message = message || 'AdjustToSizeError';
-        this.patchSize = desiredPatchSize;
-    }
+    CVUtils._parseCSSDimensionValues = function(value) {
+        var dimension = {
+                value: parseFloat(value),
+                unit: value.indexOf("%") === value.length-1 ? "%" : "%"
+            };
+
+        return dimension;
+    };
+
+    CVUtils._dimensionsConverters = {
+        top: function(dimension, context) {
+            if (dimension.unit === "%") {
+                return Math.floor(context.height * (dimension.value / 100));
+            }
+        },
+        right: function(dimension, context) {
+            if (dimension.unit === "%") {
+                return Math.floor(context.width - (context.width * (dimension.value / 100)));
+            }
+        },
+        bottom: function(dimension, context) {
+            if (dimension.unit === "%") {
+                return Math.floor(context.height - (context.height * (dimension.value / 100)));
+            }
+        },
+        left: function(dimension, context) {
+            if (dimension.unit === "%") {
+                return Math.floor(context.width * (dimension.value / 100));
+            }
+        }
+    };
+
+    CVUtils.computeImageArea = function(inputWidth, inputHeight, area) {
+        var context = {width: inputWidth, height: inputHeight};
 
-    AdjustToSizeError.prototype = Object.create(RangeError.prototype);
-    AdjustToSizeError.prototype.constructor = AdjustToSizeError;
+        var parsedArea = Object.keys(area).reduce(function(result, key) {
+            var value = area[key],
+                parsed = CVUtils._parseCSSDimensionValues(value),
+                calculated = CVUtils._dimensionsConverters[key](parsed, context);
 
-    CVUtils.AdjustToSizeError = AdjustToSizeError;
+            result[key] = calculated;
+            return result;
+        }, {});
+
+        return {
+            sx: parsedArea.left,
+            sy: parsedArea.top,
+            sw: parsedArea.right - parsedArea.left,
+            sh: parsedArea.bottom - parsedArea.top
+        };
+    };
 
     return (CVUtils);
 });
diff --git a/src/frame_grabber.js b/src/frame_grabber.js
index 830896a..0892b2f 100644
--- a/src/frame_grabber.js
+++ b/src/frame_grabber.js
@@ -10,29 +10,26 @@ define(["cv_utils"], function(CVUtils) {
         var _that = {},
             _streamConfig = inputStream.getConfig(),
             _video_size = CVUtils.imageRef(inputStream.getRealWidth(), inputStream.getRealHeight()),
-            _size =_streamConfig.size ? CVUtils.imageRef(inputStream.getWidth(), inputStream.getHeight()) : _video_size,
-            _sx = 0,
-            _sy = 0,
-            _dx = 0,
-            _dy = 0,
-            _sWidth,
-            _dWidth,
-            _sHeight,
-            _dHeight,
-            _canvas = null,
+            _canvasSize = inputStream.getCanvasSize(),
+            _size = CVUtils.imageRef(inputStream.getWidth(), inputStream.getHeight()),
+            topRight = inputStream.getTopRight(),
+            _sx = topRight.x,
+            _sy = topRight.y,
+            _canvas,
             _ctx = null,
             _data = null;
 
-        _sWidth = _video_size.x;
-        _dWidth = _size.x;
-        _sHeight = _video_size.y;
-        _dHeight = _size.y;
-
         _canvas = canvas ? canvas : document.createElement("canvas");
-        _canvas.width = _size.x;
-        _canvas.height = _size.y;
+        _canvas.width = _canvasSize.x;
+        _canvas.height = _canvasSize.y;
         _ctx = _canvas.getContext("2d");
         _data = new Uint8Array(_size.x * _size.y);
+        console.log("FrameGrabber", JSON.stringify({
+            size: _size,
+            topRight: topRight,
+            videoSize: _video_size,
+            canvasSize: _canvasSize
+        }));
 
         /**
          * Uses the given array as frame-buffer 
@@ -57,8 +54,8 @@ define(["cv_utils"], function(CVUtils) {
                 frame = inputStream.getFrame(),
                 ctxData;
             if (frame) {
-                _ctx.drawImage(frame, _sx, _sy, _sWidth, _sHeight, _dx, _dy, _dWidth, _dHeight);
-                ctxData = _ctx.getImageData(0, 0, _size.x, _size.y).data;
+                _ctx.drawImage(frame, 0, 0, _canvasSize.x, _canvasSize.y);
+                ctxData = _ctx.getImageData(_sx, _sy, _size.x, _size.y).data;
                 if(doHalfSample){
                     CVUtils.grayAndHalfSampleFromCanvasData(ctxData, _size, _data);
                 } else {
diff --git a/src/input_stream.js b/src/input_stream.js
index 57a1a6e..182d873 100644
--- a/src/input_stream.js
+++ b/src/input_stream.js
@@ -11,7 +11,9 @@ define(["image_loader"], function(ImageLoader) {
             _eventNames = ['canrecord', 'ended'],
             _eventHandlers = {},
             _calculatedWidth,
-            _calculatedHeight;
+            _calculatedHeight,
+            _topRight = {x: 0, y: 0},
+            _canvasSize = {x: 0, y: 0};
 
         function initSize() {
             var width = video.videoWidth,
@@ -19,6 +21,9 @@ define(["image_loader"], function(ImageLoader) {
 
             _calculatedWidth = _config.size ? width/height > 1 ? _config.size : Math.floor((width/height) * _config.size) : width;
             _calculatedHeight = _config.size ? width/height > 1 ? Math.floor((height/width) * _config.size) : _config.size : height;
+
+            _canvasSize.x = _calculatedWidth;
+            _canvasSize.y = _calculatedHeight;
         }
 
         that.getRealWidth = function() {
@@ -111,6 +116,24 @@ define(["image_loader"], function(ImageLoader) {
             }
         };
 
+        that.setTopRight = function(topRight) {
+            _topRight.x = topRight.x;
+            _topRight.y = topRight.y;
+        };
+
+        that.getTopRight = function() {
+            return _topRight;
+        };
+
+        that.setCanvasSize = function(size) {
+            _canvasSize.x = size.x;
+            _canvasSize.y = size.y;
+        };
+
+        that.getCanvasSize = function() {
+            return _canvasSize;
+        };
+
         that.getFrame = function() {
             return video;
         };
@@ -146,7 +169,9 @@ define(["image_loader"], function(ImageLoader) {
             calculatedWidth,
             calculatedHeight,
             _eventNames = ['canrecord', 'ended'],
-            _eventHandlers = {};
+            _eventHandlers = {},
+            _topRight = {x: 0, y: 0},
+            _canvasSize = {x: 0, y: 0};
 
         function loadImages() {
             loaded = false;
@@ -156,6 +181,8 @@ define(["image_loader"], function(ImageLoader) {
                 height = imgs[0].height;
                 calculatedWidth = _config.size ? width/height > 1 ? _config.size : Math.floor((width/height) * _config.size) : width;
                 calculatedHeight = _config.size ? width/height > 1 ? Math.floor((height/width) * _config.size) : _config.size : height;
+                _canvasSize.x = calculatedWidth;
+                _canvasSize.y = calculatedHeight;
                 loaded = true;
                 frameIdx = 0;
                 setTimeout(function() {
@@ -245,6 +272,24 @@ define(["image_loader"], function(ImageLoader) {
             }
         };
 
+        that.setTopRight = function(topRight) {
+            _topRight.x = topRight.x;
+            _topRight.y = topRight.y;
+        };
+
+        that.getTopRight = function() {
+            return _topRight;
+        };
+
+        that.setCanvasSize = function(size) {
+            _canvasSize.x = size.x;
+            _canvasSize.y = size.y;
+        };
+
+        that.getCanvasSize = function() {
+            return _canvasSize;
+        };
+
         that.getFrame = function() {
             var frame;
             
diff --git a/src/quagga.js b/src/quagga.js
index 45a141f..2d84bdf 100644
--- a/src/quagga.js
+++ b/src/quagga.js
@@ -15,7 +15,6 @@ define([
         "events",
         "camera_access",
         "image_debug",
-        "cv_utils",
         "gl-matrix"],
 function(Code128Reader,
          EANReader,
@@ -29,7 +28,6 @@ function(Code128Reader,
          Events,
          CameraAccess,
          ImageDebug,
-         CVUtils,
          glMatrix) {
     "use strict";
     
@@ -112,39 +110,10 @@ function(Code128Reader,
         _inputStream.addEventListener("canrecord", canRecord.bind(undefined, cb));
     }
 
-    function checkImageConstraints() {
-        var patchSize,
-            width = _inputStream.getWidth(),
-            height = _inputStream.getHeight(),
-            halfSample = _config.locator.halfSample ? 0.5 : 1,
-            size = {
-                x: Math.floor(width * halfSample),
-                y: Math.floor(height * halfSample)
-            };
-
+    function canRecord(cb) {
         if (_config.locate) {
-            try {
-                console.log(size);
-                patchSize = CVUtils.calculatePatchSize(_config.locator.patchSize, size);
-            } catch (error) {
-                if (error instanceof CVUtils.AdjustToSizeError) {
-                    _inputStream.setWidth(Math.floor(Math.floor(size.x/error.patchSize.x)*(1/halfSample)*error.patchSize.x));
-                    _inputStream.setHeight(Math.floor(Math.floor(size.y/error.patchSize.y)*(1/halfSample)*error.patchSize.y));
-                    patchSize = error.patchSize;
-                }
-            }
-            console.log("Patch-Size: " + JSON.stringify(patchSize));
-            if ((_inputStream.getWidth() % patchSize.x) === 0 && (_inputStream.getHeight() % patchSize.y) === 0) {
-                return true;
-            }
+            BarcodeLocator.checkImageConstraints(_inputStream, _config.locator);
         }
-        throw new Error("Image dimensions do not comply with the current settings: Width (" +
-                            width + " )and height (" + height +
-                            ") must a multiple of " + patchSize.x);
-    }
-
-    function canRecord(cb) {
-        checkImageConstraints();
         initCanvas();
         _framegrabber = FrameGrabber.create(_inputStream, _canvasContainer.dom.image);
         initConfig();
@@ -177,8 +146,8 @@ function(Code128Reader,
                 }
             }
             _canvasContainer.ctx.image = _canvasContainer.dom.image.getContext("2d");
-            _canvasContainer.dom.image.width = _inputStream.getWidth();
-            _canvasContainer.dom.image.height = _inputStream.getHeight();
+            _canvasContainer.dom.image.width = _inputStream.getCanvasSize().x;
+            _canvasContainer.dom.image.height = _inputStream.getCanvasSize().y;
 
             _canvasContainer.dom.overlay = document.querySelector("canvas.drawingBuffer");
             if (!_canvasContainer.dom.overlay) {
@@ -194,8 +163,8 @@ function(Code128Reader,
                 }
             }
             _canvasContainer.ctx.overlay = _canvasContainer.dom.overlay.getContext("2d");
-            _canvasContainer.dom.overlay.width = _inputStream.getWidth();
-            _canvasContainer.dom.overlay.height = _inputStream.getHeight();
+            _canvasContainer.dom.overlay.width = _inputStream.getCanvasSize().x;
+            _canvasContainer.dom.overlay.height = _inputStream.getCanvasSize().y;
         }
     }
 
@@ -227,6 +196,53 @@ function(Code128Reader,
         }
     }
 
+    function transformResult(result) {
+        var topRight = _inputStream.getTopRight(),
+            xOffset = topRight.x,
+            yOffset = topRight.y,
+            i;
+
+        if (!result || (xOffset === 0 && yOffset === 0)) {
+            return;
+        }
+
+
+        if (result.line && result.line.length === 2) {
+            moveLine(result.line);
+        }
+        if (result.boxes && result.boxes.length > 0) {
+            for (i = 0; i < result.boxes.length; i++) {
+                moveBox(result.boxes[i]);
+            }
+        }
+
+        function moveBox(box) {
+            var corner = box.length;
+
+            while(corner--) {
+                box[corner][0] += xOffset;
+                box[corner][1] += yOffset;
+            }
+        }
+
+        function moveLine(line) {
+            line[0].x += xOffset;
+            line[0].y += yOffset;
+            line[1].x += xOffset;
+            line[1].y += yOffset;
+        }
+    }
+
+    function publishResult(result) {
+        if (_onUIThread) {
+            transformResult(result);
+        }
+        Events.publish("processed", result);
+        if (result && result.codeResult) {
+            Events.publish("detected", result);
+        }
+    }
+
     function locateAndDecode() {
         var result,
             boxes;
@@ -236,14 +252,10 @@ function(Code128Reader,
             result = _decoder.decodeFromBoundingBoxes(boxes);
             result = result || {};
             result.boxes = boxes;
-            Events.publish("processed", result);
-            if (result && result.codeResult) {
-                Events.publish("detected", result);
-            }
+            publishResult(result);
         } else {
-            Events.publish("processed");
+            publishResult();
         }
-
     }
 
     function update() {
@@ -327,10 +339,7 @@ function(Code128Reader,
             } else if (e.data.event === 'processed') {
                 workerThread.imageData = new Uint8Array(e.data.imageData);
                 workerThread.busy = false;
-                Events.publish("processed", e.data.result);
-                if (e.data.result && e.data.result.codeResult) {
-                    Events.publish("detected", e.data.result);
-                }
+                publishResult(e.data.result);
             }
         };
 
diff --git a/test-main.js b/test-main.js
index c9da393..e5797ba 100644
--- a/test-main.js
+++ b/test-main.js
@@ -18,7 +18,6 @@ require.config({
     'array_helper': 'src/array_helper',
     'cv_utils': 'src/cv_utils',
     'typedefs': 'src/typedefs',
-    'glMatrixAddon': 'src/glMatrixAddon',
     'cluster': 'src/cluster',
     'camera_access': 'src/camera_access',
     'events': 'src/events',
@@ -46,7 +45,8 @@ require.config({
     'tracer': 'src/tracer',
     'upc_e_reader': 'src/upc_e_reader',
     'upc_reader': 'src/upc_reader',
-    'async': 'node_modules/async/lib/async'
+    'async': 'node_modules/async/lib/async',
+    'gl-matrix': 'node_modules/gl-matrix/dist/gl-matrix'
   },
   deps: allTestFiles,
   callback: window.__karma__.start