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公开(公告)号：EP1725046A3
公开(公告)日：2009-05-13
申请号：EP06018031.2
申请日：1997-10-23
发明人： Sekiguchi, Shunichi , Asai, Kohtaro , Murakami, Tokumichi , Nishikawa, Hirofumi , Kuroda, Shinichi , Isu, Yosimi , Hasegawa, Yuri
CPC分类号： H04N19/523 , H04N19/53 , H04N19/537 , H04N19/61
摘要： It is an object of the invention to obtain a video encoder and a video decoder performing a highly accurate prediction of a picture, transformed by other than translation, within a short.processing time in a small-scaled circuit. A video encoder for performing compression encoding of an input picture includes motion compensated prediction means for performing interframe motion detection. The motion compensated prediction means has a motion detector including a transformed block matching unit for transforming a reference picture portion into a picture portion having a predefined shape for performing motion detection and a motion compensator including a corresponding pel determinator for determining integer pels of real sample points of the transformed reference picture portion corresponding to an integer pel of the input picture block according to the motion parameters supplied from the motion detector as a result of the comparison so as to supply prediction picture data. The video encoder of the present invention can be combined with a video decoder having a motion compensator which performs the same operations as those in the video encoder to configure a video encoding and decoding system. Further, the video decoder uses half-pels of the reference picture in the motion compensator as well as integer pels, computes pel positions using plural motion vectors, and transforms the obtained pel value into a predefined form by the transformation pattern.
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公开(公告)号：EP1565003B1
公开(公告)日：2009-04-22
申请号：EP05008899.6
申请日：1997-10-23
发明人： Isu, Yoshimi , Sekiguchi, Shunichi , Asai, Kohtaro , Nishikawa, Hirofumi , Kuroda, Shinichi , Hasegawa, Yuri
CPC分类号： H04N21/4385 , H04N19/00 , H04N19/12 , H04N19/136 , H04N19/20 , H04N19/40 , H04N19/44 , H04N19/51 , H04N19/513 , H04N19/517 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/2389 , H04N21/44012 , H04N21/440218
摘要： A coded bit stream converting apparatus comprises: syntax analyzing means (161) for inputting a first coded bit stream generated in a first coding scheme, and for extracting first header information in the first coding scheme and image coded data; decoding means (162) for decoding the first header information extracted; header information setting means (164) for setting and coding second header information in a second coding scheme in response to the first header information decoded by said decoding means; and multiplexing means (165) for generating a second coded bit stream by multiplexing image coded data extracted by said syntax analyzing means with the second header information coded by said header information setting means.
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公开(公告)号：EP1988716A2
公开(公告)日：2008-11-05
申请号：EP08012933.1
申请日：1997-10-23
发明人： Isu, Yoshimi , Sekiguchi, Shunichi , Asai, Kohtaro , Nishikawa, Hirofumi , Kuroda, Shinichi , Hasegawa, Yuri
CPC分类号： H04N19/00 , H04N19/12 , H04N19/136 , H04N19/20 , H04N19/40 , H04N19/44 , H04N19/51 , H04N19/513 , H04N19/517 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/2389 , H04N21/4385 , H04N21/44012 , H04N21/440218
摘要： 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.
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公开(公告)号：EP1328125B1
公开(公告)日：2007-12-12
申请号：EP03090051.8
申请日：1997-10-23
发明人： Isu, Yoshimi , Sekiguchi, Shunichi , Asai, Kohtaro , Nishikawa, Hirofumi , Kuroda, Shinichi , Hasegawa, Yuri
CPC分类号： H04N21/4385 , H04N19/00 , H04N19/12 , H04N19/136 , H04N19/20 , H04N19/40 , H04N19/44 , H04N19/51 , H04N19/513 , H04N19/517 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/2389 , H04N21/44012 , H04N21/440218
摘要： A coded bit stream converting apparatus comprises: syntax analyzing means (161) for inputting a first coded bit stream generated in a first coding scheme, and for extracting first header information in the first coding scheme and image coded data; decoding means (162) for decoding the first header information extracted; header information setting means (164) for setting and coding second header information in a second coding scheme in response to the first header information decoded by said decoding means; and multiplexing means (165) for generating a second coded bit stream by multiplexing image coded data extracted by said syntax analyzing means with the second header information coded by said header information setting means.
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公开(公告)号：EP1843600A2
公开(公告)日：2007-10-10
申请号：EP07014935.6
申请日：1997-10-23
发明人： Isu, Yoshimi , Sekiguchi, Shunichi , Asai, Kohtaro , Nishikawa, Hirofumi , Kuroda, Shinichi , Hasegawa, Yuri
CPC分类号： H04N21/4385 , H04N19/00 , H04N19/12 , H04N19/136 , H04N19/20 , H04N19/40 , H04N19/44 , H04N19/51 , H04N19/513 , H04N19/517 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/2389 , H04N21/44012 , H04N21/440218
摘要： A coded bit stream converting apparatus comprises: syntax analyzing means (161) for inputting a first coded bit stream generated in a first coding scheme, and for extracting first header information in the first coding scheme and image coded data;
decoding means (162) for decoding the first header information extracted;
header information setting means (164) for setting and coding second header information in a second coding scheme in response to the first header information decoded by said decoding means; '
and
multiplexing means (165) for generating a second coded bit stream by multiplexing image coded data extracted by said syntax analyzing means with the second header information coded by said header information setting means.摘要翻译： 一种编码比特流转换设备包括：语法分析装置（161），用于输入以第一编码方案产生的第一编码比特流，并用于提取第一编码方案中的第一头信息和图像编码数据; 解码装置（162），用于对提取的第一头信息进行解码; 头信息设定装置（164），用于响应由所述解码装置解码的第一头信息，以第二编码方式设定和编码第二头信息; '和用于通过提取复用图像编码数据，产生第二编码的比特流复用装置（165），所述与由所述头段信息设定手段已编码的第二报头信息的语法分析装置。
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公开(公告)号：EP1809047A2
公开(公告)日：2007-07-18
申请号：EP07006270.8
申请日：1997-10-23
发明人： Isu, Yoshimi , Sekiguchi, Shunichi , Asai, Kohtaro , Nishikawa, Hirofumi , Kuroda, Shinichi , Hasegawa, Yuri
CPC分类号： H04N21/4385 , H04N19/00 , H04N19/12 , H04N19/136 , H04N19/20 , H04N19/40 , H04N19/44 , H04N19/51 , H04N19/513 , H04N19/517 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/2389 , H04N21/44012 , H04N21/440218
摘要： 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 an AC prediction valid/invalid indicator information which indicates whether or not there is an available prediction process for an alternative current component of an intra-coded DCT coefficient according to the received first coded bit stream and the received second coded bit stream.
摘要翻译： 一种图像解码装置，至少对第一编码比特流进行解码，在该第一编码比特流中复用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，或者对第二编码比特流进行解码， 对MPEG-4编码方式的信息和以MPEG-4编码方式编码的图像编码数据进行多路复用，具有切换解码分析方式的开关（102），该解码分析方式是对表示是否进行解码的AC预测有效/无效指示符信息 根据接收到的第一编码比特流和接收到的第二编码比特流，存在用于帧内编码DCT系数的替代当前分量的可用预测过程。
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公开(公告)号：EP1725045A2
公开(公告)日：2006-11-22
申请号：EP06018030.4
申请日：1997-10-23
发明人： Sekiguchi, Shunichi , Asai, Kohtaro , Murakami, Tokumichi , Nishikawa, Hirofumi , Kuroda, Shinichi , Isu, Yosimi , Hasegawa, Yuri
CPC分类号： H04N19/523 , H04N19/53 , H04N19/537 , H04N19/61
摘要： It is an object of the invention to obtain a video encoder and a video decoder performing a highly accurate prediction of a picture, transformed by other than translation, within a short.processing time in a small-scaled circuit. A video encoder for performing compression encoding of an input picture includes motion compensated prediction means for performing interframe motion detection. The motion compensated prediction means has a motion detector including a transformed block matching unit for transforming a reference picture portion into a picture portion having a predefined shape for performing motion detection and a motion compensator including a corresponding pel determinator for determining integer pels of real sample points of the transformed reference picture portion corresponding to an integer pel of the input picture block according to the motion parameters supplied from the motion detector as a result of the comparison so as to supply prediction picture data. The video encoder of the present invention can be combined with a video decoder having a motion compensator which performs the same operations as those in the video encoder to configure a video encoding and decoding system. Further, the video decoder uses half-pels of the reference picture in the motion compensator as well as integer pels, computes pel positions using plural motion vectors, and transforms the obtained pel value into a predefined form by the transformation pattern.
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公开(公告)号：EP1511325A3
公开(公告)日：2006-07-19
申请号：EP04026174.5
申请日：1998-01-22
发明人： Sekiguchi, Shunichi , Asai, Kohtaro , Murakami, Tokumichi , Nishikawa, Hirofumi , Kuroda, Shinichi , Isu, Yoshimi , Hasegawa, Yuri
CPC分类号： H04N7/24 , H04N19/105 , H04N19/127 , H04N19/137 , H04N19/142 , H04N19/179 , H04N19/186 , H04N19/196 , H04N19/23 , H04N19/423 , H04N19/44 , H04N19/46 , H04N19/463 , H04N19/503 , H04N19/537 , H04N19/573 , H04N19/58 , H04N19/61 , H04N19/87
摘要： To achieve an encoding system including a highly efficient prediction performed in response to the content of a scene, a significance, and a motion characteristic of a moving picture and the like, memories a, b, c, motion compensator 5 responsive to an arbitrary transform parameter representing the motion of a prediction picture segment for generating a predicted picture by using arbitrary data stored in the memories a, b, c based upon the transform parameter, and memory update unit 15 for allowing the content of one or more of the memories to be updated at an arbitrary period of time, are provided.
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公开(公告)号：EP1565004A1
公开(公告)日：2005-08-17
申请号：EP05008900.2
申请日：1997-10-23
发明人： Isu, Yoshimi , Sekiguchi, Shunichi , Asai, Kohtaro , Nishikawa, Hirofumi , Kuroda, Shinichi , Hasegawa, Yuri
CPC分类号： H04N21/4385 , H04N19/00 , H04N19/12 , H04N19/136 , H04N19/20 , H04N19/40 , H04N19/44 , H04N19/51 , H04N19/513 , H04N19/517 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/2389 , H04N21/44012 , H04N21/440218
摘要： 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.
摘要翻译： 一种图像解码装置，至少对第一编码比特流进行解码，在该第一编码比特流中复用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，或者对第二编码比特流进行解码， MPEG-4编码方式的信息和以MPEG-4编码方式编码的图像编码数据被多路复用，包括：开关（102），用于切换解码分析方案，该解码分析方案根据以下内容解码帧内编码DCT系数的直流分量： 所接收的第一编码比特流和所接收的第二编码比特流，其中当接收到第一编码比特流时，开关将帧内编码DCT系数的直流分量解码预定的固定码长。
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公开(公告)号：EP1565003A1
公开(公告)日：2005-08-17
申请号：EP05008899.6
申请日：1997-10-23
发明人： Isu, Yoshimi , Sekiguchi, Shunichi , Asai, Kohtaro , Nishikawa, Hirofumi , Kuroda, Shinichi , Hasegawa, Yuri
CPC分类号： H04N21/4385 , H04N19/00 , H04N19/12 , H04N19/136 , H04N19/20 , H04N19/40 , H04N19/44 , H04N19/51 , H04N19/513 , H04N19/517 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/2389 , H04N21/44012 , H04N21/440218
摘要： 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 setter for setting a quantization scale to be used for an inverse quantization of a direct current component of an intra-DCT coefficient according to the received first coded bit stream and the received second coded bit stream; and an inverse quantization processor (119A, 119B) for performing an inverse quantization process for the direct current component of the intra-DCT coefficient using the quantization scale set by the setter, wherein when the first coded bit stream is received, the setter sets the quantization scale to eight, and when the second coded bit stream is received, the setter sets the quantization scale according to a quantization step size determined per macroblock.
摘要翻译： 一种图像解码装置，用于对至少第一编码比特流进行解码，其中将H.263编码方案的头部信息和在H.263编码方案中编码的图像编码数据复用到其中，或用于对第二编码比特流进行解码， MPEG-4编码方式的信息和MPEG-4编码方式中编码的图像编码数据被复用，包括：设定用于DCT系数的直流分量的逆量化的量化比例的设定器， 到所接收的第一编码比特流和所接收的第二编码比特流; 以及逆量化处理器（119A，119B），用于使用由设定器设置的量化尺度对DCT系数的直流分量进行逆量化处理，其中当接收到第一编码比特流时，设置器设置 量化比例为8，并且当接收到第二编码比特流时，设定器根据每宏块确定的量化步长来设置量化比例。
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