均值滤波matlab程序代码

%均值滤波%方法一：filter2clearall;figureI=rgb2gray(imread('132.jpg'));I=imnoise(I,'salt&pepper',0.1);%加入椒盐噪声K1=filter2(fspecial('average',3),I)/255;%进行3*3均值滤波K2=filter2(fspecial('average',5),I)/255;%进行5*5均值滤波K3=filter2(fspecial('average',7),I)/255;%进行7*7均值滤波subplot(2,2,1),imshow(I),title('椒盐噪声图');%显示原图像subplot(2,2,2),imshow(K1),title('3*3均值滤波图像');subplot(2,2,3),imshow(K2),title('5*5均值滤波图像');subplot(2,2,4),imshow(K3),title('7*7均值滤波图像');%方法二双循环语句，移动平均法%均值滤波clc,clear;figuref=rgb2gray(imread('132.jpg'));subplot(2,2,1),imshow(f),title('原图');f1=imnoise(f,'gaussian',0.002,0.0008);subplot(2,2,2),imshow(f1),title('高斯噪声图');k1=floor(3/2)+1;k2=floor(3/2)+1;X=f1;[M,N]=size(X);uint8Y=zeros(M,N);funBox=zeros(3,3);fori=1:M-3forj=1:N-3funBox=X(i:i+3,j:j+3);s=sum(funBox(:));h=s/16;Y(i+k1,j+k2)=h;end;end;Y=Y/255;subplot(2,2,3),imshow(Y),title('均值滤波图');