Hybrid global/local bit rate control
    1.
    发明授权
    Hybrid global/local bit rate control 失效
    混合全局/本地比特率控制

    公开(公告)号:US5986712A

    公开(公告)日:1999-11-16

    申请号:US4661

    申请日:1998-01-08

    IPC分类号: H04N7/26 H04N7/50

    摘要: A current picture partitioned into a plurality of partitions is received and encoded by determining a total target number of encoded bits for the current picture to avoid overflow or underflow of a video buffer verifier (VBV) maintained by an encoder. The encoder determines a local target number of encoded bits for each partition of the current picture, in accordance with the total target number. A plurality of partition encoders encode each partition, respectively, in accordance with the local target number for said each partition, wherein each partition encoder maintains a local VBV having a local VBV fullness, to monitor local underflow or overflow conditions.

    摘要翻译: 通过确定当前图像的编码比特的总目标数量来避免分割成多个分区的当前图像,以避免由编码器维持的视频缓冲器验证器(VBV)的上溢或下溢。 编码器根据总目标数量确定当前图像的每个分区的编码比特的本地目标数量。 多个分区编码器分别根据所述每个分区的本地目标编号对每个分区进行编码,其中每个分区编码器维护具有局部VBV饱和度的本地VBV,以监视本地下溢或溢出状况。