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ç´æ¹åè¡¡ï¼å¹³æ»ï¼éåA=imread('.jpg');
B=rgb2gray(A);
figure,源码swing获取文件源码subplot(2,2,1),imshow(B);
subplot(2,2,2),imhist(B);
A1=imadjust(B,[0.2 0.5],[]);
subplot(2,2,3),imshow(A1);
subplot(2,2,4),imhist(A1);
C=imnoise(B,'salt & pepper');
h1=[0.1 0.1 0.1;0.1 0.2 0.1;0.1 0.1 0.1];
h2=1/4.*[1 2 1;2 4 2;1 2 1];
C1=filter2(h1,C);
C2=filter2(h2,C);
C3=medfilt2(C);
figure,subplot(2,2,1),imshow(C);
subplot(2,2,2),imshow(C1,[]);
subplot(2,2,3),imshow(C2,[]);
subplot(2,2,4),imshow(C3);
h=[0 -1 0;-1 4 -1;0 -1 0];
D1=imfilter(B,h);
d2=fspecial('sobel');
D2=imfilter(B,d2);
D3=edge(B,'roberts',0.1);
figure,subplot(2,2,1),imshow(B);
subplot(2,2,2),imshow(D1);
subplot(2,2,3),imshow(D2,[]);
subplot(2,2,4),imshow(D3);
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