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    • 8. 发明申请
    • MOTION VECTOR CODING AND DECODING METHODS
    • 运动矢量编码和解码方法
    • US20120275520A1
    • 2012-11-01
    • US13484368
    • 2012-05-31
    • Satoshi KONDOShinya KadonoMakoto HagaiKiyofumi Abe
    • Satoshi KONDOShinya KadonoMakoto HagaiKiyofumi Abe
    • H04N7/32H04N7/28
    • H04N19/61H04N19/176H04N19/51H04N19/513H04N19/517H04N19/52H04N19/573
    • A coding apparatus includes a motion vector coding unit that codes an inputted motion vector. 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 of coded neighboring blocks. The predicted vector is generated by one of the following methods: motion vectors referring to the same picture are selected from among the motion vectors for the neighboring blocks; motion vectors of respective neighboring blocks are ordered in a, predetermined order, and the motion vectors of the same order rank are selected from the ordered motion vectors; and the predicted vector of a second motion vector of the current block is 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.
    • 编码装置包括:编码输入的运动矢量的运动矢量编码单元。 基于运动矢量与从编码的相邻块的运动矢量获得的预测矢量之间的差,对每个当前块的运动矢量进行编码。 通过以下方法之一生成预测矢量:从相邻块的运动矢量中选择参考相同图像的运动矢量; 按照预定顺序对各个相邻块的运动矢量进行排序,从有序运动矢量中选择相同次序秩的运动矢量; 并且当前块的第二运动矢量的预测向量是第一运动矢量,并且如果第二运动矢量和第一运动矢量指的是不同的图像,则根据图像之间的时间距离来缩放第一运动矢量。