You don't even need 50 photos – this was done some time ago using a single photo. See http://vision.ucsd.edu/~blaxton/sneakey.html http://vision.ucsd.edu/~blaxt

You don't even need 50 photos – this was done some time ago using a single photo. See http://vision.ucsd.edu/~blaxton/sneakey.html http://vision.ucsd.edu/~blaxton/sneakey.html for an overview.