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公开(公告)号:US20050123274A1
公开(公告)日:2005-06-09
申请号:US10989845
申请日:2004-11-15
申请人: Regis Crinon , Chih-Lung Lin , Jie Liang , Shankar Regunathan , Shuo-Jen Wu , Timothy Onders , Thomas Holcomb
发明人: Regis Crinon , Chih-Lung Lin , Jie Liang , Shankar Regunathan , Shuo-Jen Wu , Timothy Onders , Thomas Holcomb
CPC分类号: H04N21/23424 , H04N19/44 , H04N19/70 , H04N21/44016 , H04N21/8455
摘要: A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).
摘要翻译: 解码器接收包括与入口点标题相对应的入口点段的多个控制参数的入口点标题。 入口点头在包含多个层的比特流的入口点层中。 解码器解码入口点标题。 多个控制参数可以包括控制参数的各种组合,例如平移扫描开启/关闭参数,参考帧距离开/关参数,循环滤波开/关参数,快速色度运动补偿开/关参数,扩展 范围运动矢量开/关参数,可变大小的变换开/关参数,重叠变换开/关参数,量化决定参数和扩展差分运动矢量编码开/关参数,断链接参数,关闭条目 参数,一个或多个编码图像大小参数,一个或多个范围映射参数,假设参考解码器缓冲器参数和/或其他参数。
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公开(公告)号:US07924921B2
公开(公告)日:2011-04-12
申请号:US10989845
申请日:2004-11-15
申请人: Regis J. Crinon , Chih-Lung Lin , Jie Liang , Shankar Regunathan , Shuo-Jen Wu , Timothy E. Onders , Thomas W. Holcomb
发明人: Regis J. Crinon , Chih-Lung Lin , Jie Liang , Shankar Regunathan , Shuo-Jen Wu , Timothy E. Onders , Thomas W. Holcomb
CPC分类号: H04N21/23424 , H04N19/44 , H04N19/70 , H04N21/44016 , H04N21/8455
摘要: A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).
摘要翻译: 解码器接收包括与入口点标题相对应的入口点段的多个控制参数的入口点标题。 入口点头在包含多个层的比特流的入口点层中。 解码器解码入口点标题。 多个控制参数可以包括控制参数的各种组合,例如平移扫描开启/关闭参数,参考帧距离开/关参数,循环滤波开/关参数,快速色度运动补偿开/关参数,扩展 范围运动矢量开/关参数,可变大小的变换开/关参数,重叠变换开/关参数,量化决定参数和扩展差分运动矢量编码开/关参数,断链接参数,关闭条目 参数,一个或多个编码图像大小参数,一个或多个范围映射参数,假设参考解码器缓冲器参数和/或其他参数。
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公开(公告)号:US20050105883A1
公开(公告)日:2005-05-19
申请号:US10882739
申请日:2004-06-30
CPC分类号: H04N21/8455 , H04N21/23424 , H04N21/44016
摘要: Techniques and tools for coding/decoding of digital video, and in particular, for determining, signaling and detecting entry points in video streams are described. Techniques and tools described herein are used to embed entry point indicator information in the bitstream that receivers, editing systems, insertion systems, and other systems can use to detect valid entry points in compressed video.
摘要翻译: 描述了用于数字视频的编码/解码的技术和工具,特别是用于确定,信令和检测视频流中的入口点的技术和工具。 这里描述的技术和工具用于将入口点指示符信息嵌入比特流中,接收器,编辑系统,插入系统和其他系统可以用来检测压缩视频中的有效入口点。
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公开(公告)号:US20050152457A1
公开(公告)日:2005-07-14
申请号:US10987521
申请日:2004-11-12
申请人: Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
发明人: Shankar Regunathan , Chih-Lung Lin , Thomas Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
CPC分类号: H04N19/86 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/179 , H04N19/184 , H04N19/46 , H04N19/51 , H04N19/523 , H04N19/61 , H04N19/70 , H04N19/82
摘要: A video codec efficiently signals that a frame is identical to its reference frame, such that separate coding of its picture content is skipped. Information that a frame is skipped is represented jointly in a coding table of a frame coding type element for bit rate efficiency in signaling. Further, the video codec signals the picture type (e.g., progressive or interlaced) of skipped frames, which permits different repeat padding methods to be applied according to the picture type.
摘要翻译: 视频编解码器有效地发信号通知帧与其参考帧相同,从而跳过其图像内容的单独编码。 帧跳过的信息在信令中的比特率效率的帧编码型元件的编码表中联合表示。 此外,视频编解码器针对跳过的帧的图像类型(例如,逐行或隔行扫描)进行信号,这允许根据图像类型应用不同的重复填充方法。
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公开(公告)号:US20050152448A1
公开(公告)日:2005-07-14
申请号:US10989843
申请日:2004-11-15
CPC分类号: H04N21/23424 , H04N19/44 , H04N19/70 , H04N21/44016 , H04N21/8455
摘要: A video decoder receives an entry point key frame comprising first and second interlaced video fields and decodes a first syntax element comprising information (e.g., frame coding mode) for the entry point key frame at a first syntax level (e.g., frame level) in a bitstream. The first interlaced video field is a predicted field, and the second interlaced video field is an intra-coded field. The information for the entry point key frame can be a frame coding mode (e.g., field interlace) for the entry point key frame. The decoder can decode a second syntax element at the first syntax level comprising second information (e.g., field type for each of the first and second interlaced video fields) for the entry point key frame.
摘要翻译: 视频解码器接收包括第一和第二隔行视频字段的入口点关键帧,并且解码第一语法元素,该第一语法元素包括第一语法元素,其包括用于入口点关键帧的信息(例如,帧编码模式) 比特流。 第一隔行视频字段是预测字段,第二隔行视频字段是帧内编码字段。 入口点关键帧的信息可以是用于入口点关键帧的帧编码模式(例如,场交错)。 解码器可以解码第一语法级别的第二语法元素,其包括用于入口点关键帧的第二信息(例如,用于第一和第二隔行扫描视频字段中的每一个的场类型)。
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公开(公告)号:US20050099869A1
公开(公告)日:2005-05-12
申请号:US10989596
申请日:2004-11-15
摘要: A decoder receives a field start code for an entry point key frame. The field start code indicates a second coded interlaced video field in the entry point key frame following a first coded interlaced video field in the entry point key frame and indicates a point to begin decoding of the second coded interlaced video field. The first coded interlaced video field is a predicted field, and the second coded interlaced video field is an intra-coded field. The decoder decodes the second field without decoding the first field. The field start code can be followed by a field header. The decoder can receive a frame header for the entry point key frame. The frame header may comprise a syntax element indicating a frame coding mode for the entry point key frame and/or a syntax element indicating field types for the first and second coded interlaced video fields.
摘要翻译: 解码器接收入口点关键帧的场起始码。 场起始码指示入口点关键帧中的第一编码隔行扫描视频字段之后的入口点关键帧中的第二编码隔行扫描视频字段,并且指示开始对第二编码交错视频字段进行解码的点。 第一编码隔行视频字段是预测字段,第二编码隔行视频字段是帧内编码字段。 解码器解码第二场而不解码第一场。 字段起始码可以后跟一个字段标题。 解码器可以接收入口点关键帧的帧头。 帧头可以包括指示用于入口点关键帧的帧编码模式的语法元素和/或指示第一和第二编码隔行视频字段的字段类型的语法元素。
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公开(公告)号:US08855202B2
公开(公告)日:2014-10-07
申请号:US13191335
申请日:2011-07-26
IPC分类号: H04N7/12 , H04N19/46 , H04N19/137 , H04N19/51 , H04N19/196 , H04N19/16 , H04N19/61 , H04N19/70
CPC分类号: H04N19/00145 , H04N19/137 , H04N19/16 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
摘要翻译: 描述了技术和工具,用于灵活地缩减视频样本。 例如,编码器用信号通知一个或多个语法元素的第一组,用于亮度样本的范围减小,并且为第二组一个或多个语法元素用于色度样本的范围缩小。 编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。 或者,编码器对入口点段的入口点标题中的范围缩小语法元素进行信号,其中语法元素适用于入口点段中的图像。 如果图像使用范围缩小,则编码器缩小图像的样本。 否则,编码器跳过缩小比例。 解码器执行相应的解析和放大操作。
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公开(公告)号:US07162093B2
公开(公告)日:2007-01-09
申请号:US10933960
申请日:2004-09-03
申请人: Shankar Regunathan , Pohsiang Hsu , Ce Wang , Chih-Lung Lin , Jie Liang , Sridhar Srinivasan
发明人: Shankar Regunathan , Pohsiang Hsu , Ce Wang , Chih-Lung Lin , Jie Liang , Sridhar Srinivasan
CPC分类号: H04N19/86 , H04N19/105 , H04N19/107 , H04N19/166 , H04N19/174 , H04N19/46 , H04N19/61 , H04N19/70 , H04N19/80 , H04N19/82
摘要: A video encoder/decoder utilizes a bistream syntax that provides an independently decodable, partial picture unit, which may be in the form of a unit containing one or more contiguous rows of macroblocks (called a slice). This slice layer provides a flexible combination of error-resilience and compression efficiency. The slice layer encodes an efficient addressing mechanism (e.g., a syntax element specifying a beginning macroblock row of the slice layer), as well as an efficient mechanism to optionally retransmit picture header information. The slice layer provides decoding and reconstruction independence by disabling all forms of prediction, overlap and loop-filtering across slice-boundaries. This permits a slice coded in intra-mode to be reconstructed error-free, irrespective of errors in other regions of the picture.
摘要翻译: 视频编码器/解码器利用提供可独立解码的部分图像单元的双向串行语法,其可以是包含一个或多个连续的宏块行(称为切片)的单元的形式。 该切片层提供了弹性和压缩效率的灵活组合。 切片层对有效的寻址机制(例如,指定切片层的开始宏块行的语法元素)进行编码,以及有选择地重传图像头信息的机制。 切片层通过禁用跨片段的所有形式的预测,重叠和循环滤波来提供解码和重建独立性。 这允许在帧内编码的片段无错重构,而与图像的其他区域中的错误无关。
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公开(公告)号:US08107531B2
公开(公告)日:2012-01-31
申请号:US10987521
申请日:2004-11-12
申请人: Shankar Regunathan , Chih-Lung Lin , Thomas W. Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
发明人: Shankar Regunathan , Chih-Lung Lin , Thomas W. Holcomb , Jie Liang , Ming-Chieh Lee , Pohsiang Hsu
IPC分类号: H04N7/12
CPC分类号: H04N19/86 , H04N19/117 , H04N19/124 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/179 , H04N19/184 , H04N19/46 , H04N19/51 , H04N19/523 , H04N19/61 , H04N19/70 , H04N19/82
摘要: A video codec efficiently signals that a frame is identical to its reference frame, such that separate coding of its picture content is skipped. Information that a frame is skipped is represented jointly in a coding table of a frame coding type element for bit rate efficiency in signaling. Further, the video codec signals the picture type (e.g., progressive or interlaced) of skipped frames, which permits different repeat padding methods to be applied according to the picture type.
摘要翻译: 视频编解码器有效地发信号通知帧与其参考帧相同,从而跳过其图像内容的单独编码。 帧跳过的信息在信令中的比特率效率的帧编码型元件的编码表中联合表示。 此外,视频编解码器针对跳过的帧的图像类型(例如,逐行或隔行扫描)进行信号,这允许根据图像类型应用不同的重复填充方法。
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公开(公告)号:US20050063471A1
公开(公告)日:2005-03-24
申请号:US10989702
申请日:2004-11-15
CPC分类号: H04N19/00145 , H04N19/137 , H04N19/16 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
摘要翻译: 描述了技术和工具,用于灵活地缩减视频样本。 例如,编码器用信号通知一个或多个语法元素的第一组,用于亮度样本的范围减小,并且为第二组一个或多个语法元素用于色度样本的范围缩小。 编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。 或者,编码器对入口点段的入口点标题中的范围缩小语法元素进行信号,其中语法元素适用于入口点段中的图像。 如果图像使用范围缩小,则编码器缩小图像的样本。 否则,编码器跳过缩小比例。 解码器执行相应的解析和放大操作。
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