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Bug fix for feature extraction

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According to CartToPolar() function documentation, result angles could be in range (0..360). To prevent index overflow this check is important.
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Aliaksandr
2015-06-02 12:12:11 +03:00
parent 7e0e8e72ab
commit d76b976012
1 changed files with 2 additions and 0 deletions
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2
modules/xobjdetect/src/acffeature.cpp
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@@ -307,6 +307,8 @@ void computeChannels(InputArray image, vector<Mat>& channels)
for (int col = 0; col < grad.cols; ++col) { for (int col = 0; col < grad.cols; ++col) {
//float angle = atan2(row_der(row, col), col_der(row, col)) * to_deg; //float angle = atan2(row_der(row, col), col_der(row, col)) * to_deg;
float angle = angles(row, col); float angle = angles(row, col);
if (angle > 180)
angle -= 180;
if (angle < 0) if (angle < 0)
angle += 180; angle += 180;
int ind = (int)(angle / 30); int ind = (int)(angle / 30);