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    • 19. 发明申请
    • ADAPTIVE MOTION RESOLUTION FOR VIDEO CODING
    • 用于视频编码的自适应运动分辨率
    • WO2011103206A1
    • 2011-08-25
    • PCT/US2011/025113
    • 2011-02-16
    • QUALCOMM INCORPORATEDCHIEN, Wei-JungKARCZEWICZ, MartaCHEN, Peisong
    • CHIEN, Wei-JungKARCZEWICZ, MartaCHEN, Peisong
    • H04N7/26H04N7/36H04N7/50
    • H04N19/58H04N19/102H04N19/147H04N19/172H04N19/176H04N19/46H04N19/52H04N19/523H04N19/61
    • A video encoder may encode video data by adaptively selecting between one-eighth-pixel and one-quarter-pixel precision motion vectors, and signal the selected precision. In one example, an apparatus includes a video encoder to encode a block of video data using a one-eighth-pixel precision motion vector when use of the one-eighth-pixel precision motion vector is determined to be preferable for the block over a one-quarter-pixel precision motion vector, and to generate a signal value indicative of the use of the one-eighth-pixel precision motion vector for the block, and an output interface to output the encoded block and the signal value. A video decoder may be configured to receive the signal value and the encoded block, analyze the signal value to determine whether the block was encoded using one-eighth-pixel precision or one-quarter-pixel precision, and decode the block based on the determination.
    • 视频编码器可以通过在八分之一像素和四分之一像素精度的运动矢量之间进行自适应选择来对视频数据进行编码,并且将所选精度发信号。 在一个示例中,一种装置包括:视频编码器,当使用八分之一像素的精确运动矢量被确定为优于一块时,使用八分之一像素的精确运动矢量对视频数据块进行编码 并且生成指示使用该块的八分之一像素精度运动矢量的信号值,以及输出接口以输出编码块和信号值。 视频解码器可以被配置为接收信号值和编码块,分析信号值以确定块是使用八分之一像素精度还是四分之一像素精度进行编码,并且基于该确定对块进行解码 。