Fix HoughLines crashes (Bug #3959).

Avoid phi exceed PI/2 to get the negative value of cos(phi).
10 years ago · 0692bf5f34
parent da6898f758
commit 0692bf5f34
1 changed files with 1 additions and 1 deletions
--- a/modules/imgproc/src/hough.cpp
+++ b/modules/imgproc/src/hough.cpp
@ -303,7 +303,7 @@ HoughLinesSDiv( const Mat& img,
                     ti1 < halftn; ti1++, phi += theta_it, phi1 += scale_factor )
                {
                    rv = r0 * std::cos( phi );
-                    i = cvFloor( rv ) * tn;
+                    i = (int)rv * tn;
                    i += cvFloor( phi1 );
                    assert( i >= 0 );
                    assert( i < rn * tn );