该函数用于对图像进行轮廓提取运算！ 非常适合新手使用-This function is used on the image contour extraction operation! Very suitable for beginners to use! ! !

基于轮廓的图像分割参数模型（snake）源码，适合想学图像处理并对图像分割感兴趣的-TX-Image segementation based on contour mode:parameter model. it is good for those students who are interesting in image processing and image segementation