给出了运动捕捉系统的模型和具体的实现方法。
Process of motion capture and its three key techniques are introduced.
其中一个问题是，《极地速递》中运用的面部表情捕捉系统无法捕捉眼睛的运动。
One problem was that the facial-capture system used in "the Polar Express" could not capture eye movements.
伟大的事，这是不是'；不需要GPS；或红外跟踪或运动捕捉或其他定位系统。
The great thing about this is that it doesn't require GPS or infrared tracking or motion capture or any other localization system.
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