中文说明：实现多时相遥感图像的变化检测，报考MDL，均值滤波等功能。该程序可以实现多时相的灰度或者彩色图像的变化检测。请注意，如果是彩色图像，可以采用CVA或者主成分变换变为单波段后，再进行变化检测。
English Description：
Realize the change detection of multi temporal remote sensing image, apply for MDL, mean filtering and other functions. The program can achieve multi temporal gray or color image change detection. Please note that if it is a color image, CVA or principal component transform can be used to change it into a single band before change detection.