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simple mean for decode

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This commit is contained in:
James Bowman 2011-04-26 00:02:09 +00:00
parent 181de06445
commit 6f82c0d662
1 changed files with 8 additions and 2 deletions
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10
modules/objdetect/src/datamatrix.cpp
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@ -247,9 +247,15 @@ static int decode(Sampler &sa, code &cc)
{
uint8 binary[8] = {0,0,0,0,0,0,0,0};
uint8 b = 0;
int i, sum;
for (int i = 0; i < 64; i++) {
b = (b << 1) + (sa.getpixel(pickup[i].x, pickup[i].y) <= 128);
sum = 0;
for (i = 0; i < 64; i++)
sum += sa.getpixel(1 + (i & 7), 1 + (i >> 3));
uint8 mean = sum / 64;
for (i = 0; i < 64; i++) {
b = (b << 1) + (sa.getpixel(pickup[i].x, pickup[i].y) <= mean);
if ((i & 7) == 7) {
binary[i >> 3] = b;
b = 0;