The time redundancy in video sequences can be eliminated by motion estimation. Block matching is a popular motion estimation method, adopted by all video codec standards.
视频编码通过运动估计消除时间冗余信息，块匹配方法是目前所有视频编码标准采用的运动估计方法。
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This paper shows that the time discretization makes the lumped-mass method much better than the consistent-mass one as accuracy is concerned for simulating wave motion in the continuous model.
Image offset method that is also fast can be applied to motion compensation, time-frequency method is intuitionistic and have a better accurate, which is applied extensively on offline.