CV_SEQ_FLAG_CONVEX  426 modules/imgproc/src/convhull.cpp                                   CV_SEQ_FLAG_CLOSED|CV_SEQ_FLAG_CONVEX,
CV_SEQ_FLAG_CONVEX  433 modules/imgproc/src/convhull.cpp                                   CV_SEQ_FLAG_CLOSED|CV_SEQ_FLAG_CONVEX,