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Fix HoughLines crashes (Bug #3959).

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Avoid phi exceed PI/2 to get the negative value of cos(phi).
This commit is contained in:
Yan Wang 2014-11-06 12:46:04 +08:00
parent da6898f758
commit 0692bf5f34
1 changed files with 1 additions and 1 deletions
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modules/imgproc/src/hough.cpp
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@ -303,7 +303,7 @@ HoughLinesSDiv( const Mat& img,
ti1 < halftn; ti1++, phi += theta_it, phi1 += scale_factor ) ti1 < halftn; ti1++, phi += theta_it, phi1 += scale_factor )
{ {
rv = r0 * std::cos( phi ); rv = r0 * std::cos( phi );
i = cvFloor( rv ) * tn; i = (int)rv * tn;
i += cvFloor( phi1 ); i += cvFloor( phi1 );
assert( i >= 0 ); assert( i >= 0 );
assert( i < rn * tn ); assert( i < rn * tn );