void rectangle(InputOutputArray img, Point pt1, Point pt2, const Scalar& color, int thickness=1, int lineType=LINE_8, int shift=0 )void rectangle(Mat& img, Rect rec, const Scalar& color, int thickness=1, int lineType=LINE_8, int shift=0 )Parameters:img – Image.pt1 – Vertex of the re...【阅读全文】