How to shift rows in a matrix by consecutive values (e.g row one 0, second row one space, third row two spaces )

I am having trouble with a video and i need to get straight every frame of it. The frames are shifted. Herein the matrix, it contains the RGB components for a frame.

Answer 1

[Image Analyst]

Since the very frist row is the only one that gets overwritten, and the last time it gets overwritten will be the Nth row which gets put into the (N-1)st row (which is again the first row), your final image will be

rgbImage(1, :, :) = rgbImage(end, :, :);

Now, if you had said "second frame gets shifted up 2 lines, third frame gets shifted up 3 lines" then that is a completely different thing that what you asked about only shifting the second row, the third row, etc.

Answer 2

[Image Analyst]

To shear an image sideways, see the help/demo for imwarp():

% Apply Horizontal Shear to Image
% Read grayscale image into workspace and display it.
% I = imread('cameraman.tif');
I = imread('peppers.png');
subplot(1, 2, 1);
imshow(I)

% Create a 2-D geometric transformation object.
tform = affine2d([1 0 0; .5 1 0; 0 0 1])

% Apply the transformation to the image.
J = imwarp(I,tform);
subplot(1, 2, 2);
imshow(J)
% Copyright 2015 The MathWorks, Inc.

Make easy adaptations to shear it the other direction.

[Miguel Reina]

This is what i was looking for

 id=0:576;
 out=cell2mat(arrayfun(@(x) circshift(mat(x,:),[1 id(x)]),(1:numel(id))','un',0));
 %mat is the matrix i want to shift and its size is 577 by 721.

thanks anyway