MATLAB: Size of Images varying

image processing

Input = imread('baby1.jpeg') ;
size(Input)
P=rgb2gray(Input);
image= im2double(P);
[m n ] = size(A);
Med = [];
%Modified filter 
for i=2:m-1
    for j=2:n-1
            Med(1) = image(i,j);
            Med(2) =image(i-1,j) ;
            Med(3) = image(i-1,j+1);
            Med(4) = image(i,j-1);
            Med(5) = image(i,j+1);
            Med(6) = image(i+1, j-1);
            Med(7) = image(i+1,j);
            Med(8) = image(i+1,j+1);
            Afilteres(i, j) = median(Med(:));
    end
end 
imshow(Af);
In this the size of image varies
   size(P)=201   300
size(Af)
   200   299
PLease help

Best Answer

m = size(A);
A1 = zeros([m(1:2) + 2,m(3)]);
A1(2:end-1,2:end-1,:) = A;
Af = zeros(m);
for ii = 1:m(1)
    for jj = 1:m(2)
        k = reshape(A1(ii:ii+2,jj:jj+2,:),[],1,3);
        Af(ii,jj,:) = median(k([1:4,6:9],:,:)); % EDIT
    end
end
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