Ah ha! My thoughts were right! Computer graphics. That is great. I've seen some of my son's CGI. I've never got into it. I have done some 'restoring' of some old pictures of family. It's a lot of fun, headaches, frustration, and all that; but most of the time it's pays off. Yours sure has!! Again that's great!
If you really want to have some fun, get a profile and straight on shot of someone's face ... and it can be modeled into an actor for Poser that is pretty convincing.