hua.m文件是将图片“花.bmp”分割成8个位于平面，再将其转化为二值图；

Exchange.m是利用imadjust函数改变图片的灰度。

histeq00.m是利用histeq函数来均衡化图片。-hua.m file is a picture " flower bmp."　divided into eight located in the plane, and then converted into binary image　Exchange.m function changes the picture using imadjust gray. histeq00.m function using histeq equalization picture.