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Merge pull request #3656 from SeninAndrew:master

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This commit is contained in:
Vadim Pisarevsky
2015-02-06 11:49:27 +00:00
parent 1e47c6cc56 52535b356c
commit 6c8681a472
1 changed files with 4 additions and 2 deletions
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6
modules/objdetect/src/hog.cpp
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@@ -301,8 +301,10 @@ void HOGDescriptor::computeGradient(const Mat& img, Mat& grad, Mat& qangle,
for( y = 0; y < gradsize.height; y++ )
{
const uchar* imgPtr = img.ptr(ymap[y]);
const uchar* prevPtr = img.ptr(ymap[y-1]);
const uchar* nextPtr = img.ptr(ymap[y+1]);
//In case subimage is used ptr() generates an assert for next and prev rows
//(see http://code.opencv.org/issues/4149)
const uchar* prevPtr = img.data + img.step*ymap[y-1];
const uchar* nextPtr = img.data + img.step*ymap[y+1];
float* gradPtr = grad.ptr<float>(y);
uchar* qanglePtr = qangle.ptr(y);