drawArrows         30 samples/gpu/pyrlk_optical_flow.cpp static void drawArrows(Mat& frame, const vector<Point2f>& prevPts, const vector<Point2f>& nextPts, const vector<uchar>& status, Scalar line_color = Scalar(0, 0, 255))
drawArrows         33 samples/tapi/pyrlk_optical_flow.cpp static void drawArrows(UMat& _frame, const vector<Point2f>& prevPts, const vector<Point2f>& nextPts, const vector<uchar>& status,