Merge pull request #703 from MartinNowak:fix_sift_overflow

9 years ago · 9bea717bd8
parent 30f718d1f0 d4df727d38
commit 9bea717bd8
1 changed files with 1 additions and 1 deletions
--- a/modules/xfeatures2d/src/sift.cpp
+++ b/modules/xfeatures2d/src/sift.cpp
@ -579,7 +579,7 @@ static void calcSIFTDescriptor( const Mat& img, Point2f ptf, float ori, float sc
    float hist_width = SIFT_DESCR_SCL_FCTR * scl;
    int radius = cvRound(hist_width * 1.4142135623730951f * (d + 1) * 0.5f);
    // Clip the radius to the diagonal of the image to avoid autobuffer too large exception
-    radius = std::min(radius, (int) sqrt((double) img.cols*img.cols + img.rows*img.rows));
+    radius = std::min(radius, (int) sqrt(((double) img.cols)*img.cols + ((double) img.rows)*img.rows));
    cos_t /= hist_width;
    sin_t /= hist_width;