how can I do sharpening attack?

Question

nadia 2017-1-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/321533-how-can-i-do-sharpening-attack

评论： nadia 2017-1-23

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?

2 个评论
显示无隐藏无

Guillaume 2017-1-23

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 2017-1-23

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?

请先登录，再进行评论。

请先登录，再回答此问题。