本代码用VC和opencv开发的，用于计算图像中矩形四个顶点的坐标，先二值化，再找轮廊，后定矩形求坐标，很有参考价值-The code used VC and opencv, used to calculate the image coordinates of the rectangle four vertices, the first two values, find contour, after seeking the coordinates given rectangle, great r