How to shift rows in a matrix by consecutive values (e.g row one 0, second row one space, third row two spaces )
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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.
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Image Analyst
el 29 de Dic. de 2017
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.
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Image Analyst
el 29 de Dic. de 2017
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.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/180497/image.png)
Make easy adaptations to shear it the other direction.
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