message: fixed bug: added threshold for variables 'rotate_a', ' rotate_c'
diff: @@ -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;
  