% Add pixel by pixel values of 2 images

y=imread('lena.bmp');
x=imread('crowd.bmp');
[r,c] = size(x);
[rn, cn] = size(y);

for k=1:r,
    for j=1:c,
        x(k,j) = x(mod(k,r)+1,mod(j,c)+1)+y(mod(k,rn)+1,mod(j,cn)+1);
    end
end

imshow(i,[0,255]);