中文说明：将原始彩色图经过灰度化、直方图均衡化、窗口滤波，最后边缘提取，得到图像轮廓，对于清晰地不够的干涉条纹图尤其有效！
English Description：
The original color image after graying, histogram equalization, window filtering, and finally edge extraction, get the image contour, especially for the interference fringe pattern which is not clear enough!