采用滑动时间窗口生成块运动方向时间序列，在此时间序列的基础上计算块的累积量和主运动方向。

And a time sequence of motion orientation for each block is generated over a sliding time window. Then accumulation and main motion orientation are computed according to the sequence.

youdao

采用滑动时间窗口生成块运动方向时间序列，在此时间序列的基础上计算块的累积量和主运动方向。

And a time sequence of motion orientation for each block is generated over a sliding time window. Then accumulation and main motion orientation are computed according to the sequence.

youdao