pls give idea for write multiple layers without overlapping via for loop

I have 15 decompose layers. when I write this layers I got only 11 images. 4 images are overlapped with adjacent one. this is code:

cnt = 1;
for j=1:Nr,%1--3
    for i=1:Nc,%1--5
        phi = imresize(Mask.*Phi(:,:,Ind(cnt)),Rs,'nearest');
        phi = 1.5*phi+0.5;
        figure;
        imshow(phi)
       imwrite(phi,sprintf('%d.bmp',(i*j)))
        cnt = cnt+1;
    end % for i
end % for j