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    • 9. 发明公开
    • Image decoding apparatus
    • 图像解码装置
    • EP1988716A3
    • 2008-11-12
    • EP08012933.1
    • 1997-10-23
    • Mitsubishi Denki Kabushiki Kaisha
    • Isu, YoshimiSekiguchi, ShunichiAsai, KohtaroNishikawa, HirofumiKuroda, ShinichiHasegawa, Yuri
    • H04N7/24H04N7/26H04N7/50
    • H04N19/00H04N19/12H04N19/136H04N19/20H04N19/40H04N19/44H04N19/51H04N19/513H04N19/517H04N19/61H04N19/70H04N21/234318H04N21/2389H04N21/4385H04N21/44012H04N21/440218
    • An image decoding apparatus for decoding at least a first coded bit stream (203) into which header information of the H.263 coding scheme and image coded data encoded in the H.263 coding scheme are multiplexed, or for decoding a second coded bit stream (204) into which header information of the MPEG-4 coding scheme and image coded data encoded in the MPEG-4 coding scheme are multiplexed,
      the image decoding apparatus comprising:
      a coding scheme decision means (32) for making a decision as to whether a received coded bit stream is the first coded bit stream or the second coded bit stream in response to the first header information or to the second header information;
      a setter (43) for setting gray scale information in image coding information to be used for decoding the received first coded bit stream (203) according to a syntax of the second coded bit stream (204) to eight bits per pixel; and
      a decoder (10) for decoding image coding information included in the header information of the MPEG-4 coding schema from the received second coded bit stream (204),
      wherein when the first coded bit stream (203) is received, the received first coded bit stream (203) is decoded according to the syntax of the second coded bit stream (204) based on the image coding information set by the setter (43), and when the second coded bit stream (204) is received, the received second coded bit stream (204) is decoded according to the image coding information decoded by the decoder (10).
    • 一种图像解码装置,至少将第一编码比特流(203)解码,其中H.263编码方案的头部信息和用H.263编码方案编码的图像编码数据被复用到该第一编码比特流中,或者用于解码第二编码比特流 (204),其中MPEG-4编码方案的头部信息和以MPEG-4编码方案编码的图像编码数据被多路复用,该图像解码设备包括:编码方案确定装置(32),用于作出关于是否 响应于第一报头信息或第二报头信息,接收到的编码比特流是第一编码比特流或第二编码比特流; 设置器(43),用于根据第二编码比特流(204)的语法将每个像素的8比特的图像编码信息中的灰度信息设置为用于对所接收的第一编码比特流(203)进行解码; 和解码器(10),用于从接收的第二编码比特流(204)解码包括在MPEG-4编码模式的头部信息中的图像编码信息,其中当接收到第一编码比特流(203)时,接收的第一 基于由设置者(43)设置的图像编码信息,根据第二编码比特流(204)的语法对已编码比特流(203)进行解码,并且当接收到第二编码比特流(204)时,接收 根据由解码器(10)解码的图像编码信息对第二编码比特流(204)进行解码。
    • 10. 发明公开
    • Image decoding apparatus
    • Vorrichtung zur Bilddekodierung
    • EP1988714A2
    • 2008-11-05
    • EP08012931.5
    • 1997-10-23
    • Mitsubishi Denki Kabushiki Kaisha
    • Isu, YoshimiSekiguchi, ShunichiAsai, KohtaroNishikawa, HirofumiKuroda, ShinichiHasegawa, Yuri
    • H04N7/24H04N7/26H04N7/50
    • H04N21/4385H04N19/00H04N19/12H04N19/136H04N19/20H04N19/40H04N19/44H04N19/51H04N19/513H04N19/517H04N19/61H04N19/70H04N21/234318H04N21/2389H04N21/44012H04N21/440218
    • An image decoding apparatus for decoding at least a first coded bit stream into which header information of the H.263 coding scheme and image coded data encoded in the H.263 coding scheme are multiplexed, or for decoding a second coded bit stream into which header information of the MPEG-4 coding scheme and image coded data encoded in the MPEG-4 coding scheme are multiplexed, comprises a switch (102) for switching a decoding analysis scheme of decoding a direct current component of an intra-coded DCT coefficient according to the received first coded bit stream and the received second coded bit stream, wherein when the first coded bit stream is received, the switch decodes the direct current component of the intra-coded DCT coefficient by a predetermined fixed code length.
    • 一种图像解码装置,用于对至少第一编码比特流(203)进行解码,其中H.263编码方案的标题信息和在H.263编码方案中编码的图像编码数据被多路复用,或用于对第二编码比特流 (204),MPEG-4编码方案的标题信息和MPEG-4编码方式中编码的图像编码数据被多路复用,图像解码装置包括:编码方案决定装置,用于决定是否 接收的编码比特流是响应于第一标题信息或第二标题信息的第一编码比特流或第二编码比特流; 用于根据所述第二编码比特流(204)的语法将所述接收到的第一编码比特流(203)解码以用于对所述第一编码比特流(203)进行解码的图像编码信息中的可扩展性编码有效/无效判定的信息的设置器(43) 以及解码器(10),用于从接收到的第二编码比特流(204)中解码包含在MPEG-4编码模式的标题信息中的图像编码信息,其中当接收到第一编码比特流(203)时,接收到的第一 编码比特流(203)根据由设定器(43)设定的图像编码信息,根据第二编码比特流(204)的语法进行解码,当接收到第二编码比特流(204)时, 第二编码比特流(204)根据由解码器(10)解码的图像编码信息进行解码。