The experiment shows that the stability of average background method is stronger than frame differential method.

实验表明，平均背景法的稳定性要优于帧间差分法。

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We use the method of moving frame to study submanifolds in conformal differential geometry, and construct new minimal submanifolds.

利用活动标架法研究共形几何中的子流形，构造新的极值子流形。

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The main methods of face tracking were introduced, and a new method based on both inter-frame differential and static character was put forward.

简述了近年来主要的人脸跟踪方法，提出一种基于帧间差分与静态特征相结合的人脸跟踪算法。

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