The the basic idea is like this. Create a mesh surface and texture map it with the image of the face which you want on it. Then provide/implement some tools to bevel up/down on these mesh preserving the smoothness of the surface. I don't want to mention too much details here, because i don't think it contains enough theories which needs explanation.
See the video below( taken with a web cam). May not have enough clarity. I implemented this app in Java only and it took almost 6 hours. After creating the 3D face object ,App will allow user to export it as OBJ format. But that part needs to be done and i am lazy. So Ii stopped further implementation :)
Is anybody interested in the code? ;).
