Improving decoding for small images

11 years ago · 29fd39c8c4
parent d806d48b0f
commit 29fd39c8c4
3 changed files with 24 additions and 8 deletions
--- a/dist/quagga.js
+++ b/dist/quagga.js
@ -501,10 +501,18 @@ define(
                }
            }
            ratio = sum / (modulo - numOnes);
+            if (ratio > 1.0) {
                for (i = 0; i < counter.length; i++) {
                    norm = counter[i] === 1 ? counter[i] : counter[i] / ratio;
                    normalized.push(norm);
                }
+            } else {
+                ratio = (sum + numOnes)/modulo;
+                for (i = 0; i < counter.length; i++) {
+                    norm = counter[i] / ratio;
+                    normalized.push(norm);
+                }
+            }
            return normalized;
        };

--- a/dist/quagga.min.js
+++ b/dist/quagga.min.js
--- a/src/barcode_reader.js
+++ b/src/barcode_reader.js
@ -65,10 +65,18 @@ define(
                }
            }
            ratio = sum / (modulo - numOnes);
+            if (ratio > 1.0) {
                for (i = 0; i < counter.length; i++) {
                    norm = counter[i] === 1 ? counter[i] : counter[i] / ratio;
                    normalized.push(norm);
                }
+            } else {
+                ratio = (sum + numOnes)/modulo;
+                for (i = 0; i < counter.length; i++) {
+                    norm = counter[i] / ratio;
+                    normalized.push(norm);
+                }
+            }
            return normalized;
        };