说明：  对给出的图片先后进行灰度处理，高斯滤波，边缘分析，将彩色图片的轮廓边界给出。在图片的边界上，求导之后不连续点就是强边缘点。
(The images are processed, the Gauss filter, the edge analysis, and the contour boundary of the color pictures are given. On the boundary of the picture, the discontinuous point is the strong edge point after the derivation.)