Reduce light reflection on image

[DidAus]

Hi everyone,

I'm currently programming an application that intends to detects wrinkles on a face picture. So far I've gpt quite good results, except for some parts of the images : these where flash light is reflected on the skin.

So, my question is as follow :
Is there any way to reduce this light reflection on the skin, without losing information about the wrinkles (i do not want to "delete" wrinkles, just reduce reflection) ?

A typical problematic image i'm facing is attached.

Thanks!

[HanneSThEGreaT]

Perhaps one of these may be of help :

http://blog.bee-eee.com/2008/01/23/c...a-of-an-image/

http://www.gutgames.com/post/Adjusti...mage-in-C.aspx

[DidAus]

Hi HanneSThEGreaT,

Thanks a lot for your very fast answer .

actually i already played on gimp with contrast, brightness and many things, and i didn't find anything good enough... That's why i think that just adjusting contrast can't be enough for my application :/

[DidAus]

I also tried to substract a gaussian blurred (i'm not a native english speaker, don't know if we can say that) image to the original image, but it didn't help a lot. Doeas anyone has an idea of how i dcan do ? thanks a lot !

[HanneSThEGreaT]

Hi HanneSThEGreaT,

Thanks a lot for your very fast answer .

actually i already played on gimp with contrast, brightness and many things, and i didn't find anything good enough... That's why i think that just adjusting contrast can't be enough for my application :/

Hello again. Sorry for the delay in posting - I am actually quite busy these days, for a change

I have also looked at Gimp. Yes, it's a good product, but it is freeware and definitely not PhotoShop or Fireworks.

The attached image was edited by me in PhotoShop CS 3. IMHO, if PhotoShop cannot fix it, it can not be done. To find a route with code to fix this will not give you better results.

I edited your picture's Contrast and Brightness to produce the attached picture.

What do you think?

[DidAus]

Hi, no worries for the delay, it's all right !!

thanks for the attached picture. Anyway, i've tried it and unfortunately it doesn't change my results, the light reflection is still too high.

I'll do with this kind of images, i'll adapt my code to those! thanks again for your answers HanneS !!