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    • 5. 发明公开
    • 비디오 인코딩 및 디코딩
    • 비디오인코딩및디코딩
    • KR1020130125398A
    • 2013-11-18
    • KR1020137025739
    • 2012-03-08
    • 캐논 가부시끼가이샤
    • 라로슈기욤온노빠트리스
    • H04N19/50H04N19/00
    • H04N7/50H04N19/105H04N19/139H04N19/176H04N19/43H04N19/513H04N19/52H04N19/61
    • A temporal motion vector predictor is includable, together with one or more spatial motion vector predictors, in a set of motion vector predictors for a block to encode of a current frame. A method of determining the temporal motion vector predictor comprises selecting as the temporal predictor one motion vector from among motion vectors in a reference block of a reference frame different from the current frame. The reference block is a block of the reference frame collocated with the block to encode or a block of the reference frame neighboring the collocated block. The selection is based on a diversity criterion for achieving diversity among the predictors of the set. In some embodiment the temporal predictor is selected from the bottom right position of a block of the reference frame, or the temporal predictor selected may depend on the size of the block to be encoded. This can reduce the motion vector memory requirements with no or no significant additional coding efficiency penalty.
    • 时间运动矢量预测器可以与一个或多个空间运动矢量预测器一起包括在用于编码当前帧的块的一组运动矢量预测器中。 确定时间运动矢量预测值的方法包括从不同于当前帧的参考帧的参考块中的运动矢量中选择一个运动矢量作为时间预测值。 参考块是与要编码的块并置的参考帧的块或者与并置块相邻的参考帧的块。 该选择基于在该组预测因子之间实现多样性的多样性标准。 在一些实施例中,从参考帧的块的右下位置选择时间预测器,或者所选择的时间预测器可以取决于要编码的块的大小。 这可以减少运动矢量存储器的要求,而不需要或不需要额外的编码效率损失。