对一副独立区域较多的图片（几千或者几万），找出图像中所有连通的区域，并且将其存储为点集。主要函数为SFindContour，里面有给出的示例程序(For more images of an independent region (thousands or tens of thousands), find all connected areas in the image and store them as point sets.The main function is SFindContour, which has the sample program given.)