主要的方法是利用矩阵差分方程的特征矩阵方程解的性质。
The main method is using the properties of the solutions of characteristic matrix equation.
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。
The main methods of face tracking were introduced, and a new method based on both inter-frame differential and static character was put forward.
为克服其不足，建立和研究了二次单调插值特征差分方法。
The quadratic monotone interpolation characteristic difference method is proposed to overcome these defects.
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