关于中值滤波或者均值滤波的英文文献,

clear;
i=imread('girl.bmp');
j=imnoise(i,'salt & pepper',0.02);
h=[1,1,1;1,1,1;1,1,1];
[a,b]=size(j);
j1=j;
j2=j;
for m=2:a-1;
for n=2:b-1;
f=[j(m-1,n-1),j(m-1,n),j(m-1,n+1);j(m,n-1),j(m,n),j(m,n+1);j(m+1,n-1),j(m+1,n),j(m+1,n+1)];
f1=double(f).*h;
f2=0;
g1=[f(1,1:3),f(2,1:3),f(3,1:3)];
g2=sort(g1);
for s=1:3;
for t=1:3;
f2=f2+f1(s,t);
end;
end;
j1(m,n)=round(f2/9);
j2(m,n)=g2(5);
end;
end;
subplot(2,3,1);
imshow(i);
subplot(2,3,2);
imshow(j);
subplot(2,3,3);
imshow(j1);
title('均值滤波');
subplot(2,3,4);
imshow(i);
subplot(2,3,5);
imshow(j);
subplot(2,3,6);
imshow(j2);
title('中值滤波');

用google scholar吧
http://scholar.google.com.hk/scholar?hl=en&q=median+filtering+algorithm+&btnG=Search&lr=lang_zh-CN%7Clang_zh-TW%7Clang_en&as_sdt=0%2C5&as_ylo=&as_vis=0
文库也有
http://wenku.baidu.com/view/7a93fcfa770bf78a652954bc.html