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    Image decoding apparatus
    2.
    发明授权
    Image decoding apparatus 失效
    图像解码装置

    公开(公告)号：US06697433B1

    公开(公告)日：2004-02-24

    申请号：US09601404

    申请日：2000-08-01

    申请人： Yoshimi Isu ,  Shunichi Sekiguchi ,  Kohtaro Asai ,  Fuminobu Ogawa ,  Shinichi Kuroda ,  Hirofumi Nishikawa ,  Yoshihisa Yamada

    发明人： Yoshimi Isu ,  Shunichi Sekiguchi ,  Kohtaro Asai ,  Fuminobu Ogawa ,  Shinichi Kuroda ,  Hirofumi Nishikawa ,  Yoshihisa Yamada

    IPC分类号： H04B166

    CPC分类号： H04N19/895 ,  H04N19/89

    摘要： A lateral directional difference calculating unit 21 calculates a change degree between pixel levels of pixels adjacent to each other through a boundary of a decoded block and a block adjacent to the decoded block in a lateral direction and calculates a change degree between pixel levels of pixels placed in the block adjacent to the decoded block in the lateral direction, a lateral directional continuity judging unit 23 judges the continuity between the decoded block and the block adjacent to the decoded block in the lateral direction. A longitudinal directional difference calculating unit 22 and a longitudinal directional continuity judging unit 24 are operated in the same manner, a block continuity judging unit 25 judges the continuity between the decoded block and each block adjacent to the decoded block, and an error macro-block judging unit 26 detects an error macro-block according to a judging result of the block continuity judging unit 25.

    摘要翻译： 横向方向差计算单元21通过解码块的边界和与解码块相邻的块在横向上计算彼此相邻的像素的像素级之间的变化程度，并计算放置的像素的像素级之间的变化程度 在横向方向上与解码块相邻的块中，横向连续性判断单元23判断解码块与横向方向上与解码块相邻的块之间的连续性。 纵向方向差计算单元22和纵向连续性判断单元24以相同的方式操作，块连续性判断单元25判断解码块与与解码块相邻的每个块之间的连续性，以及错误宏块 判断单元26根据块连续性判断单元25的判断结果检测错误宏块。