Method and apparatus for coding and decoding video bitstream
    31.
    发明申请
    Method and apparatus for coding and decoding video bitstream 审中-公开
    视频比特流编码和解码的方法和装置

    公开(公告)号:US20050163217A1

    公开(公告)日:2005-07-28

    申请号:US11041370

    申请日:2005-01-25

    Abstract: Provided are a video encoder, a video coding method, a video decoder, and a video decoding method for transmitting a compressed video signal based on a suitable compression method adaptively selected according to the environment. The video coder includes a first encoding portion that removes temporal and spatial redundancy of input video frames, quantizes transform coefficients generated by removing temporal and spatial redundancies from the input video frames, and generates a bitstream, a second encoding portion that removes spatial and temporal redundancy of input video frames, quantizes transform coefficients generated by removing spatial and temporal redundancies from the input video frames, and generates a bitstream, and a mode selector that compares the bitstreams input from the first encoding portion and the second encoding portion with each other, and outputs only the bitstream selected based on the comparison result. Therefore, video frames decoded with various resolution levels can be restored.

    Abstract translation: 提供了一种基于根据环境自适应地选择的合适的压缩方法的视频编码器,视频编码方法,视频解码器和用于发送压缩视频信号的视频解码方法。 视频编码器包括消除输入视频帧的时间和空间冗余的第一编码部分,对通过从输入视频帧中消除时间和空间冗余而产生的变换系数进行量化,并生成比特流,消除空间和时间冗余的第二编码部分 对通过从输入视频帧中移除空间和时间冗余而产生的变换系数进行量化,并生成比特流;以及模式选择器,其将从第一编码部分和第二编码部分输入的比特流彼此进行比较,以及 仅输出基于比较结果选择的比特流。 因此,可以恢复用各种分辨率级别解码的视频帧。

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