Image forgery detection

[starbala2008]

hi,
how to identify image forgery with aforge, like if a person merged his face in another image. I want to show that forged image(face) as dark, if a small picture is merged in another picture that small picture should be darkened. how to achieve this?
Thanks in advance.
Waiting for your reply.

[andrew.kirillov]

Hello,

A sample image may help to clarify what you are you looking for.