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fixed bug: added threshold for variables 'rotate_a', ' rotate_c'

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AnastasiaaSenina 2019-02-07 17:50:55 +03:00 committed by Alexander Alekhin
parent d2174e2e75
commit d7b1f28a90
1 changed files with 2 additions and 0 deletions
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modules/video/src/camshift.cpp
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@ -167,6 +167,8 @@ cv::RotatedRect cv::CamShift( InputArray _probImage, Rect& window,
double rotate_a = cs * cs * mu20 + 2 * cs * sn * mu11 + sn * sn * mu02;
double rotate_c = sn * sn * mu20 - 2 * cs * sn * mu11 + cs * cs * mu02;
rotate_a = std::max(0.0, rotate_a); // avoid negative result due calculation numeric errors
rotate_c = std::max(0.0, rotate_c); // avoid negative result due calculation numeric errors
double length = std::sqrt( rotate_a * inv_m00 ) * 4;
double width = std::sqrt( rotate_c * inv_m00 ) * 4;