MATLAB: HOW TO MOVE THE DIAGONAL ELEMENTS IN MATRIX (ONE PIXELS) FOR IMAGE PROCESSING

Question

HOW TO MOVE THE DIAGONAL ELEMENTS IN MATRIX (ONE PIXELS) FOR IMAGE PROCESSING

Answer 1

I = [1 2 4
2 5 6
1 3 8 ];
ii = 1:size(I,1)+1:numel(I);
I(ii) = I(ii(mod(ii - 2,3)+1));

or

I(eye(size(I))>0) = circshift(diag(I),1);