说明：  彩色图像轮廓提取，做了很久才做出来，效果不错，我对花的边缘进行提取，然后花心也有边缘，希望大家能用到这个算法
(Color image contour extraction, done for a long time before doing it, well, the edge of my flower extract, and then helping them have the edge, I hope everyone can be that the algorithm)