Filtro mediana Matlab online

Filtro de la Mediana online (Math Lab)

V=uint8(zeros(9,1));
I1=imread('im1.jpg');
[m,n]=size(I1);
for i=2:m-1;
for j=2:n-1
V=uint8(I1(i-1,j-1)+I1(i-1,j)+I1(i-1,j+1)+I1(i,j-1)+I1(i,j)+I1(i,j+1)+I1(i+1,j-1)+I1(i+1,j)+I1(i+1,j+1));
I1(i,j)=V/9;
end
end
imshow(I1);