MATLAB 灰度、二值图像腐蚀膨胀

 1 cl;
 2 img_gray=imread(\'fupeng.jpg\');
 3 img_erzhi=imread(\'erzhi_fupeng.jpg\');
 4 imshow(img_gray)
 5 figure,imshow(img_erzhi)
 6 [m n]=size(img_gray);
 7 img_gray_fu=zeros(m,n);
 8 img_gray_peng=zeros(m,n);
 9 img_erzhi_fu=zeros(m,n);
10 img_erzhi_peng=zeros(m,n);
11 
12 for i=2:m-1
13     for j=2:n-1
14         img_gray_fu(i,j)=min(min(img_gray(i-1:i+1,j-1:j+1)));
15         img_gray_peng(i,j)=max(max(img_gray(i-1:i+1,j-1:j+1)));
16     end
17 end
18 
19 figure,imshow(uint8(img_gray_fu));
20 figure,imshow(uint8(img_gray_peng));
21 
22 
23 for i=2:m-1
24     for j=2:n-1
25         img_erzhi_fu(i,j)=min(min(img_erzhi(i-1:i+1,j-1:j+1)));
26         img_erzhi_peng(i,j)=max(max(img_erzhi(i-1:i+1,j-1:j+1)));
27     end
28 end
29 
30 figure,imshow(uint8(img_erzhi_fu));
31 figure,imshow(uint8(img_erzhi_peng));