You can find a tutorial from one of the vector artists here:

http://www.creativebush.com/gmeshtutorial/

I only see this painstaking procedure good for blowing up pictures.
I'm sure the Entertainment Mags would like this feature so they can put someone's face of a photo taken far away, blown up perfectly on the front page.  (Jolie cheating on Brad!)

This really has nothing to do with 3D.

~Shawn