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clear all g0=imread('z1.bmp'); %g0 = g0(:,:,2); %三维转二维 figure(1);imshow(g0) ;title('原图') %如图 5 g1=imnoise(g0,'salt & pepper',0.2) g1=im2double(g1); figure(2);imshow(g1);title('加入椒盐噪声') %如图 6 h1=fspecial('gaussian',4,0.3) g2=filter2(h1,g1,'same') figure(3);imshow(g2);title('进行高斯滤波') %如图 7 h2=fspecial('sobel') g3=filter2(h2,g1,'same') figure(4);imshow(g3);title('进行sobel滤波') %如图 8 h3=fspecial('prewitt') g4=filter2(h3,g1,'same') figure(5);imshow(g4);title('进行prewitt滤波') %如图 9 h4=fspecial('laplacian',0.5); g5=filter2(h4,g1,'same'); figure(6);imshow(g5);title('进行拉普拉斯滤波'); %如图 10 h5=fspecial('log',4,0.3); g6=filter2(h5,g1,'same');figure(7); imshow(g6);title('进行高斯拉普拉斯滤波'); %如图 11 h6=fspecial('average'); g7=filter2(h6,g1,'same');figure(8); imshow(g7);title('进行均值滤波'); %如图 12 h7=fspecial('unsharp',0.3); g8=filter2(h7,g1,'same'); figure(9);imshow(g8);title('进行模糊滤波'); %如图 13 h8=[0 -1 0;-1 5 -1;0 -1 0]; g9=filter2(h8,g1,'same'); figure(10);imshow(g9);title('进行高通高斯滤波'); %如图 14 h9=g1;g10=medfilt2(h9); figure(11);imshow(g10);title('进行中值滤波'); %如图 15