根据运动估计的残差图像的DCT变换后交流系数的统计分布规律，推导出了一种块匹配运动估计的匹配准则。

In this paper, we propose a matching criterion for block-matching motion estimation based on the statistic distribution of DCT AC coefficients.

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首先，采用改进的Y—W方程对TVARMA模型时变自回归部分系数进行估计，并计算残差序列；

Firstly, the modified Y-W equation was used to estimate the parameters of the time-varied auto-regressive part and the error signal;

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