Gradient of an image
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I want to extract gradient from an image. Can I do in Matlab using the following command?
ims=imread('A.png');
Rx = ims(:,1:end-1,1) - ims(:,2:end,1);
Gx = ims(:,1:end-1,2) - ims(:,2:end,2);
Bx = ims(:,1:end-1,3) - ims(:,2:end,3);
Ry = ims(1:end-1,:,1) - ims(2:end,:,1);
Gy = ims(1:end-1,:,2) - ims(2:end,:,2);
By = ims(1:end-1,:,3) - ims(2:end,:,3);
Pl = [[Rx(:),Gx(:),Bx(:)];[Ry(:),Gy(:),By(:)]];
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