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How can I use a loop to subtract a pixel's gray level to it´s neighbor pixel's gray level?

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Teemu 2013-2-13

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采纳的回答： Thorsten

How can I use a loop to subtract a pixel's gray level to it´s neighbor pixel's gray level?

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Thorsten 2013-2-13

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编辑：Thorsten 2013-2-13

在 MATLAB Online 中打开

 I = im2double(imread('cameraman.tif'));
 Ix = diff(I')';
 Iy = diff(I);

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Teemu 2013-2-13

Can I do diff function to one file to both x- and y-direction? Or can I make one file from Ix and Iy? I mean that I do diff function and get one file.

Teemu 2013-2-14

Can I use diff function to subtract pixel from 2-pixel away from it? So it not neigbour pixel anymore.

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