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How to compute the total variation of an image?

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S.
S. il 26 Ago 2014
Modificato: S. il 26 Ago 2014
I'm looking for a way to compute the total variation of an image as a blind measure of an image(the l1 norm of the spatial first-order derivatives) as a blind measure of noisiness. How may I implement this in MATLAB?

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