how can I do sharpening attack?

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nadia le 23 Jan 2017

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Commenté : nadia le 23 Jan 2017

Hi, I want to do sharpening attack on image but I do not know how can I do it in matlab. is it any function or code for this?

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Guillaume le 23 Jan 2017

You may want to explain what a sharpening attack is for those of us who've never heard the term. Neither google nor sciencedirect are particularly enlightening on the subject.

I suspect it's something you're going to have to code yourself in any case.

nadia le 23 Jan 2017

sharpening attack is kind of attack that is used in watermarking test like jpeg. I know imsharpen function in matlab do this and enhances edges and changes high and low frequencies in image. but I want to know other functions or code like this that change low frequency band in image?

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