中文说明：通过利用S型隶属度函数将图像的灰度值转化为隶属度值，然后再利用粗糙集计算隶属度值直方图的上下近似。是一个很好的图像分割程序，分割效果好。
English Description：
By using S-type membership function, the gray value of image is transformed into membership value, and then rough set is used to calculate the upper and lower approximation of membership value histogram. Is a good image segmentation program, segmentation effect is good.