如果这一项目受到欢迎，那么公司可能就会开始要求读者为此付费。
If this proves popular, the company may start charging for it.
头部姿势估计在人机交互中有着重要的意义，为此提出了一种在单目图像序列中估计三维头部姿势的方法。
For head pose estimation plays an important role in human machine interface, the authors propose an approach to estimate 3D head pose from a monocular sequence.
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