程序能够完成自商图像的功能，可用于光照条件变化下对于图像的简单处理。加入了单亮区和单暗区，从而减小光照的影响。压缩包中还带有一个迭代阈值选取的小程序。-Program to complete the self-quotient image function can be used to change the lighting conditions under simple treatment for images. Joined the single light and single dark