how to compute the gradient response for an image

Hello everyone, In the research I'm working on, I need to know how to compute the gradient response of an image in order to complete the next steps.

I searched about it but a didn't find a clear steps to do it. That's way I need your help

Thank you

[Image Analyst]

Whatever you did to edit it, didn't help. I still don't know what you mean.

Answer 1

[Image Analyst]

What do you mean by gradient "response"? Response to what? If you want the plain gradient, you can use imgradient() or imgradientxy(). Clear steps for those functions should be in the example section of the help.

[Geek 2100]

In the research Im working on, the author says"Given a face image, the horizontal and vertical gradient responses are firstly computed" and I didn't understand what does he mean by that

[Image Analyst]

That means that you call imgradientxy() and get two images returned, one for the horizontal gradient, and one for the vertical gradient. See the help.

[Geek 2100]

Sir, may I have your email or any think to contact with you?! I don't want to make any awkwardness. I appreciate what ever you will reply.

Thank you