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    • 2. 发明申请
    • DECODING METHOD, DECODING APPARATUS, CODING METHOD, AND CODING APPARATUS
    • 解码方法,解码设备,编码方法和编码设备
    • US20120251015A1
    • 2012-10-04
    • US13503782
    • 2010-10-29
    • Chong Soon LimMin LiHai Wei SunYouji ShibaharaTakahiro Nishi
    • Chong Soon LimMin LiHai Wei SunYouji ShibaharaTakahiro Nishi
    • G06K9/36
    • H04N19/126H04N19/172H04N19/196H04N19/30H04N19/46H04N19/61
    • A decoding method includes: obtaining a plurality of quantization parameter sets from a header of a coded stream (S400); parsing an identifier from a header of a coded picture included in the coded stream (S402); selecting at least one quantization parameter set from among the plurality of quantization parameter sets, based on the parsed identifier (S404); determining whether a flag parsed from the header of the coded picture has a predetermined value (S408); generating a new quantization matrix from another quantization matrix when the flag has the predetermined value (S410); decoding the coded picture by inversely quantizing the coded picture using the generated new quantization matrix (S412); and decoding the coded picture by inversely quantizing the coded picture using a quantization matrix included in the selected quantization parameter set when the flag does not have the predetermined value (S414).
    • 解码方法包括:从编码流的头部获取多个量化参数集(S400); 从编码流中包含的编码图像的标题中解析标识符(S402); 基于所解析的标识符,从所述多个量化参数集中选择至少一个量化参数集(S404); 确定从编码图像的标题解析的标志是否具有预定值(S408); 当标志具有预定值时,从另一个量化矩阵生成新的量化矩阵(S410); 通过使用所生成的新量化矩阵对编码图像进行逆量化来解码编码图像(S412); 以及当所述标志不具有所述预定值时,使用包括在所选择的量化参数集中的量化矩阵对所述编码图像进行逆量化,对所述编码图像进行解码(S414)。