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Made a small performance tweak (about 1% faster).

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git-svn-id: https://zxing.googlecode.com/svn/trunk@1158 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
dswitkin 2009-12-13 21:36:38 +00:00
parent 5cc1df3c92
commit e779586745
1 changed files with 6 additions and 5 deletions
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11
core/src/com/google/zxing/common/HybridBinarizer.java
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@ -95,11 +95,12 @@ public final class HybridBinarizer extends GlobalHistogramBinarizer {
top = (top < subHeight - 2) ? top : subHeight - 3;
int sum = 0;
for (int z = -2; z <= 2; z++) {
sum += blackPoints[top + z][left - 2];
sum += blackPoints[top + z][left - 1];
sum += blackPoints[top + z][left];
sum += blackPoints[top + z][left + 1];
sum += blackPoints[top + z][left + 2];
int[] blackRow = blackPoints[top + z];
sum += blackRow[left - 2];
sum += blackRow[left - 1];
sum += blackRow[left];
sum += blackRow[left + 1];
sum += blackRow[left + 2];
}
int average = sum / 25;
threshold8x8Block(luminances, x << 3, y << 3, average, stride, matrix);