How James Cameron Cracked the Code on Avatar 2 Underwater Scenes

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  11 November 2017
How James Cameron Cracked the Code on Avatar 2 Underwater Scenes

Well, were doing it. Its never been done before and its very tricky because our motion capture system, like most motion capture systems, is what they call optical base, meaning that it uses markers that are photographed with hundreds of cameras. The problem with water is not the underwater part, but the interface between the air and the water, which forms a moving mirror. That moving mirror reflects all the dots and markers, and it creates a bunch of false markers. Its a little bit like a fighter plane dumping a bunch of chaff to confuse the radar system of a missile. It creates thousands of false targets, so weve had to figure out how to get around that problem, which we did. Basically, whenever you add water to any problem, it just gets ten times harder. So, weve thrown a lot of horsepower, innovation, imagination and new technology at the problem, and its taken us about a year and a half now to work out how were going to do it.
http://collider.com/avatar-sequels-...#motion-capture
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