Illumination normalization in OpenCV

Question

I am working on a face recognition project. I have pictures with different lighting so I need to do illumination normalization. I read a paper which which claims to do illuminat

Answer 1

Don't know if it's too late for you.

In the original paper, DoG was performed by a given sigma, here your radius(23) it too big. Try radius = 7 and radius = 1. About the equalization step, it's different from the paper. you need implement one by yourself.

BTW: some basic functions like cvSmooth was not implemented right for your application. You probably need to implement by yourself to get a better result.