Through KurzweilAI, an article from the NY Times (free reg required) :

‘The Contour system requires actors to cover their faces and clothes with makeup containing phosphorescent powder that is not visible under normal lighting. In a light-sealed room, the actors face two arrays of inexpensive video cameras that are synchronized to simultaneously record their appearance and shape.”

“The technology will let filmmakers transform the appearance of actors in the computer, raising the possibility of a new form of digital video in which the viewer can control the point of view — what is being described in Hollywood as “navigable entertainment.”

“The difference offered by Mr. Perlman’s technology is in the detail. Standard motion-capture systems are generally limited in resolution to several hundred points on a human face, while the Contour system can recreate facial images at a resolution of 200,000 pixels.”