【OpenCV函数】轮廓提取;轮廓绘制;轮廓面积;外接矩形
FindContours在二值图像中寻找轮廓 int cvFindContours( CvArr* image, CvMemStorage* storage, CvSeq** first_contour, int header_size=sizeof(CvContour), int mode=CV_RETR_LIST, int method=CV_...
