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    Motion vector coding and decoding methods
    8.
    发明授权
    Motion vector coding and decoding methods 有权

    公开(公告)号：US08213510B2

    公开(公告)日：2012-07-03

    申请号：US11980622

    申请日：2007-10-31

    申请人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

    发明人： Satoshi Kondo ,  Shinya Kadono ,  Makoto Hagai ,  Kiyofumi Abe

    IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

    CPC分类号： H04N19/61 ,  H04N19/176 ,  H04N19/51 ,  H04N19/513 ,  H04N19/517 ,  H04N19/52 ,  H04N19/573

    摘要： A motion vector coding method and apparatus that improves efficiency of coding motion vectors when a current block is coded using a plurality of motion vectors. The apparatus includes a motion vector coding unit that codes a motion vector inputted from a motion vector detecting unit. A motion vector for each current block is coded based on a difference between the motion vector and a predicted vector obtained from motion vectors for previously coded neighboring blocks. The predicted vector is generated by one of the following processes: (A) the motion vectors which refer to the same picture are selected from among the motion vectors for the neighboring blocks so as to generate the predicted vector; (B) the motion vectors for the respective neighboring blocks are ordered in the predetermined order, and the motion vectors of the same order rank are selected from the ordered motion vectors so as to generate the predicted vector; and (C) the predicted vector for the second motion vector of the current block shall be the first motion vector, and if the second motion vector and the first motion vector refer to different pictures, the first motion vector is scaled according to the temporal distance between the pictures so as to generate the predicted vector.

    MOTION COMPENSATION METHOD, PICTURE CODING METHOD AND PICTURE DECODING METHOD
    10.
    发明申请
    MOTION COMPENSATION METHOD, PICTURE CODING METHOD AND PICTURE DECODING METHOD 有权
    运动补偿方法，图像编码方法和图像解码方法

    公开(公告)号：US20110286527A1

    公开(公告)日：2011-11-24

    申请号：US13192790

    申请日：2011-07-28

    申请人： Shinya KADONO ,  Satoshi Kondo ,  Kiyofumi Abe

    发明人： Shinya KADONO ,  Satoshi Kondo ,  Kiyofumi Abe

    IPC分类号： H04N7/26

    CPC分类号： H04N19/513 ,  H04N19/122 ,  H04N19/137 ,  H04N19/139 ,  H04N19/169 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52 ,  H04N19/521 ,  H04N19/557 ,  H04N19/56 ,  H04N19/57 ,  H04N19/577 ,  H04N19/583 ,  H04N19/593 ,  H04N19/61

    摘要： A picture coding apparatus (300) includes a motion vector estimation unit (302) and a motion compensation unit (303). The motion vector estimation unit (302) selects one method for deriving a motion vector of a block to be motion-compensated, depending on a motion vector of a block located in a corner of a decoded macroblock from among a group of blocks that compose the decoded macroblock corresponding to the current macroblock to be coded and determines the motion vector derived by the selected method for derivation to be a candidate of the motion vector of the current macroblock to be coded. The motion compensation unit (303) generates a predictive image of the block to be motion-compensated based on the estimated motion vector.

    摘要翻译： 图像编码装置（300）具有运动矢量估计部（302）和运动补偿部（303）。 运动矢量估计单元（302）根据组成该块的解码宏块的角落中的块的运动矢量，选择一种用于导出要运动补偿的块的运动矢量的方法 对应于要编码的当前宏块的解码宏块，并且确定由所选择的方法导出的运动矢量，以便导出为要编码的当前宏块的运动矢量的候选。 运动补偿单元（303）基于所估计的运动矢量生成要运动补偿的块的预测图像。