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Tweaking parameters; Minor Bugfixes

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This commit is contained in:
Christoph Oberhofer
2015-07-08 00:36:32 +02:00
parent 2c61d16cb7
commit 31df5d8faf
10 changed files with 128 additions and 98 deletions
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src/bresenham.js
+5 -3
View File
@@ -117,6 +117,7 @@ define(["cv_utils", "image_wrapper"], function(CVUtils, ImageWrapper) {
max = result.max,
line = result.line,
slope,
slope2,
center = min + (max - min) / 2,
extrema = [],
currentDir,
@@ -132,11 +133,12 @@ define(["cv_utils", "image_wrapper"], function(CVUtils, ImageWrapper) {
pos : 0,
val : line[0]
});
for ( i = 0; i < line.length - 1; i++) {
for ( i = 0; i < line.length - 2; i++) {
slope = (line[i + 1] - line[i]);
if (slope < rThreshold && line[i + 1] < (center*1.5)) {
slope2 = (line[i + 2] - line[i + 1]);
if ((slope + slope2) < rThreshold && line[i + 1] < (center*1.5)) {
dir = Slope.DIR.DOWN;
} else if (slope > threshold && line[i + 1] > (center*0.5)) {
} else if ((slope + slope2) > threshold && line[i + 1] > (center*0.5)) {
dir = Slope.DIR.UP;
} else {
dir = currentDir;
src/code_128_reader.js
+21 -17
View File
@@ -162,15 +162,17 @@ define(
} else {
if (counterPos === counter.length - 1) {
normalized = self._normalize(counter);
for ( code = 0; code < self.CODE_PATTERN.length; code++) {
error = self._matchPattern(normalized, self.CODE_PATTERN[code]);
if (error < bestMatch.error) {
bestMatch.code = code;
bestMatch.error = error;
if (normalized) {
for (code = 0; code < self.CODE_PATTERN.length; code++) {
error = self._matchPattern(normalized, self.CODE_PATTERN[code]);
if (error < bestMatch.error) {
bestMatch.code = code;
bestMatch.error = error;
}
}
bestMatch.end = i;
return bestMatch;
}
bestMatch.end = i;
return bestMatch;
} else {
counterPos++;
}
@@ -210,17 +212,19 @@ define(
sum += counter[j];
}
normalized = self._normalize(counter);
for ( code = self.START_CODE_A; code <= self.START_CODE_C; code++) {
error = self._matchPattern(normalized, self.CODE_PATTERN[code]);
if (error < bestMatch.error) {
bestMatch.code = code;
bestMatch.error = error;
if (normalized) {
for (code = self.START_CODE_A; code <= self.START_CODE_C; code++) {
error = self._matchPattern(normalized, self.CODE_PATTERN[code]);
if (error < bestMatch.error) {
bestMatch.code = code;
bestMatch.error = error;
}
}
if (bestMatch.error < self.AVG_CODE_ERROR) {
bestMatch.start = i - sum;
bestMatch.end = i;
return bestMatch;
}
}
if (bestMatch.error < self.AVG_CODE_ERROR) {
bestMatch.start = i - sum;
bestMatch.end = i;
return bestMatch;
}
for ( j = 0; j < 4; j++) {
src/ean_8_reader.js
+1 -1
View File
@@ -32,7 +32,7 @@ define(
decodedCodes.push(code);
}
code = self._findPattern(self.MIDDLE_PATTERN, code.end, true);
code = self._findPattern(self.MIDDLE_PATTERN, code.end, true, false);
if (code === null) {
return null;
}
src/ean_reader.js
+22 -18
View File
@@ -42,8 +42,8 @@ define(
[2, 1, 1, 3]
]},
CODE_FREQUENCY : {value: [0, 11, 13, 14, 19, 25, 28, 21, 22, 26]},
SINGLE_CODE_ERROR: {value: 0.7},
AVG_CODE_ERROR: {value: 0.3},
SINGLE_CODE_ERROR: {value: 0.67},
AVG_CODE_ERROR: {value: 0.27},
FORMAT: {value: "ean_13", writeable: false}
};
@@ -77,18 +77,20 @@ define(
} else {
if (counterPos === counter.length - 1) {
normalized = self._normalize(counter);
for ( code = 0; code < coderange; code++) {
error = self._matchPattern(normalized, self.CODE_PATTERN[code]);
if (error < bestMatch.error) {
bestMatch.code = code;
bestMatch.error = error;
if (normalized) {
for (code = 0; code < coderange; code++) {
error = self._matchPattern(normalized, self.CODE_PATTERN[code]);
if (error < bestMatch.error) {
bestMatch.code = code;
bestMatch.error = error;
}
}
bestMatch.end = i;
if (bestMatch.error > self.AVG_CODE_ERROR) {
return null;
}
return bestMatch;
}
bestMatch.end = i;
if (bestMatch.error > self.AVG_CODE_ERROR) {
return null;
}
return bestMatch;
} else {
counterPos++;
}
@@ -145,13 +147,15 @@ define(
sum += counter[j];
}
normalized = self._normalize(counter);
error = self._matchPattern(normalized, pattern);
if (normalized) {
error = self._matchPattern(normalized, pattern);
if (error < epsilon) {
bestMatch.error = error;
bestMatch.start = i - sum;
bestMatch.end = i;
return bestMatch;
if (error < epsilon) {
bestMatch.error = error;
bestMatch.start = i - sum;
bestMatch.end = i;
return bestMatch;
}
}
if (tryHarder) {
for ( j = 0; j < counter.length - 2; j++) {
src/upc_e_reader.js
+5 -4
View File
@@ -36,13 +36,13 @@ define(
if (code.code >= self.CODE_G_START) {
code.code = code.code - self.CODE_G_START;
codeFrequency |= 1 << (5 - i);
} else {
codeFrequency |= 0 << (5 - i);
}
result.push(code.code);
decodedCodes.push(code);
}
self._determineParity(codeFrequency, result);
if (!self._determineParity(codeFrequency, result)) {
return null;
}
return code;
};
@@ -57,10 +57,11 @@ define(
if (codeFrequency === self.CODE_FREQUENCY[nrSystem][i]) {
result.unshift(nrSystem);
result.push(i);
return;
return true;
}
}
}
return false;
};
UPCEReader.prototype._convertToUPCA = function(result) {