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    • 7. 发明申请
    • POST PROCESSING OF MOTION VECTORS USING SAD FOR LOW BIT RATE VIDEO COMPRESSION
    • 使用SAD进行低比特率视频压缩的运动矢量的后处理
    • WO2008148730A1
    • 2008-12-11
    • PCT/EP2008/056762
    • 2008-06-02
    • TANDBERG TELEVISION ASABOCK, Alois MartinAMMU, Satya GhoshMAY, Richard
    • BOCK, Alois MartinAMMU, Satya GhoshMAY, Richard
    • H04N7/26
    • H04N19/521H04N19/513H04N19/593
    • A method and system for detecting and replacing spurious motion vectors in video signal compression includes determining whether a motion vector of a current macroblock is spurious by comparing the motion vector with motion vectors of neighbouring macroblocks; and replacing the motion vector as spurious if the difference exceeds a predetermined threshold. In particular, the method and system seeks to determine (72, 73) whether at least one cluster of motion vectors of neighbouring macroblocks can be formed; and if not, leaves (80) the motion vector of the current macroblock unchanged but if so determining (74) whether the motion vector falls within a cluster. The motion vector may be replaced (81) under certain criteria if the motion vector does not fall within a cluster of motion vectors of neighbouring macroblocks.
    • 一种用于检测和替换视频信号压缩中的杂散运动矢量的方法和系统,包括:通过将运动矢量与相邻宏块的运动矢量相比较来确定当前宏块的运动矢量是否是杂散的; 并且如果所述差异超过预定阈值,则将所述运动矢量替换为寄生的。 特别地,该方法和系统寻求确定(72,73)是否可以形成相邻宏块的至少一个运动矢量簇; 如果不是,则离开(80)当前宏块的运动矢量不变,但是如果确定(74)运动矢量是否落在簇内。 如果运动矢量不在相邻宏块的运动矢量簇内,则运动矢量可以在特定标准下被替换(81)。