At the beginning of production one cast member Khylin Rhambo, who plays Dink Meeker in the film, posted this picture to his Facebook account showing him in a room of light. According to an article on Ender's Ansible he states that the "the technology in the picture was used to scan his face, take costume measurements, 'and other stuff.'” There was not much known about the technology until now.
In my recent internet travels, I encountered a Huffington Post science column called "Talk Nerdy to Me" run by their senior science correspondent Cara Santa Maria. In May she posted a video report called "How to make a Digital Human" which features the technology you see in Khylin's picture called Light Stage X. Light Stage X is globed network of lights and cameras that was developed by the Graphics Lab at University of Southern California's Institute for Creative Studies, it's purpose, as one of it's creators and lab directors Paul Debevec, Ph.d states is a way of "digitizing people's faces to turn a real person in to a digital person that would be just as realistic as the real thing."
I can spend another 500 words or so giving you an overview about how this thing works, or you can watch the video (WATCH THE VIDEO). It gives a good overview about how it works, how they used it for facial captures for actors in movies and video games, and a example of how they generate a digital version of Cara. Awesome tech.
I can imagine that Digital Domain would be using this capture technology to generate 3D versions of all the kids for integration into CGI effects for the Battle Room sequences. It will be exciting to see how it comes out. This should give you some better understanding into how Digital Domain is spending their money on the Movie!
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