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    • 10. 发明申请
    • Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer
    • 基于多层视频编码器有效压缩运动矢量的方法和装置
    • US20060088101A1
    • 2006-04-27
    • US11254051
    • 2005-10-20
    • Woo-jin HanKyo-hyuk LeeJae-young LeeSang-chang ChaBae-keun LeeHo-jin Ha
    • Woo-jin HanKyo-hyuk LeeJae-young LeeSang-chang ChaBae-keun LeeHo-jin Ha
    • H04N11/02H04N7/12H04B1/66H04N11/04
    • H04N19/577H04N19/31H04N19/51H04N19/517
    • A method and apparatus of improving the compression efficiency of a motion vector by efficiently predicting a motion vector in an enhancement layer from a motion vector in a base layer in a video coding method using a multi-layer are provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.
    • 提供一种通过使用多层的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来提高运动矢量的压缩效率的方法和装置。 该方法包括从输入帧获得具有第一帧速率的基本层帧中的运动矢量,从输入帧获得具有第二帧速率的第一增强层帧中的运动矢量,第二帧速率大于 第一帧速率,如果在相同时刻没有基本层帧的情况下,通过参考紧邻在与第一增强层帧相同的时间位置之前和之后的基本层帧中的至少一个帧的运动矢量来生成预测的运动矢量 位置作为第一增强层帧,并且编码第一增强层帧中的运动矢量与生成的预测运动矢量之间的差,以及所获得的基本层中的运动矢量。