在有些法度榜样中因为图像过大年夜，经常须要我们将图像切割成就个比较小的图案之后在进行相干的处理。
 

Img=imread('sssd.png');
imgsize=size(Img)
subimg_width=600;
subimg_height=1000;
num_width_spilt=ceil(imgsize(1)/subimg_width);
num_height_spilt=ceil(imgsize(2)/subimg_height);
num=num_width_spilt*num_height_spilt;
for i=1:num_width_spilt
   for j=1:num_height_spilt
   if(i*subimg_width<=imgsize(1))
       width=subimg_width;
   else
       width=imgsize(1)-(i-1)*subimg_width;
   end
   if(j*subimg_height<=imgsize(2))
       height=subimg_height;
   else
       height=imgsize(2)-(j-1)*subimg_height;
   end
    subimg=zeros(width,height);

    for ii=1:width
    for jj=1:height
    for kk=1:3
   subimg(ii,jj,kk)=Img((i-1)*subimg_width+ii,(j-1)*subimg_height+jj,kk);
    end
    end
    end
 
 
  subimg=uint8(subimg);
    eval(['imwrite(subimg, ''subimg' num2str((i-1)*num_width_spilt+j) '.bmp'',''bmp'');']);
   end
end
    

对下图进行瓜分，获得四个小图
[img]http://img.blog.csdn.net/20150105102301202?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXllbGlodWE=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
获得的四个小图：
第一张：
[img]http://img.blog.csdn.net/20150105102337703?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXllbGlodWE=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
第二张
[img]http://img.blog.csdn.net/20150105102451557?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXllbGlodWE=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
第三张：
[img]http://img.blog.csdn.net/20150105102542849?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXllbGlodWE=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
第四┞放
[img]http://img.blog.csdn.net/20150105102543437?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXllbGlodWE=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center