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公开(公告)号：US08687709B2
公开(公告)日：2014-04-01
申请号：US10934116
申请日：2004-09-04
CPC分类号： H04N19/93 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86
摘要： An encoder/decoder obtains pixel data from one or more field lines associated with a first block in an interlaced frame coded picture comprising plural macroblocks each having an equal number of top and bottom field lines. The encoder/decoder obtains pixel data from one or more field lines associated with a second block and performs in-loop deblocking filtering across a boundary. The in-loop deblocking filtering comprises filter operations performed on pixel data from field lines of same polarity only. In another aspect, an encoder/decoder obtains transform size information for plural blocks of macroblock, obtains field/frame type information for the macroblock and selects one or more boundaries for in-loop deblocking based at least in part on the transform size information and the field/frame type information. In-loop deblocking can be performed on horizontal block boundaries prior to vertical block boundaries.
摘要翻译： 编码器/解码器从隔行扫描帧编码图像中的与第一块相关联的一个或多个场线获得像素数据，该帧包括多个具有相等数目的顶场和底场的行的宏块。 编码器/解码器从与第二块相关联的一个或多个场线获取像素数据，并且跨越边界执行循环去块滤波。 循环去块滤波包括对相同极性的场线的像素数据执行的滤波操作。 在另一方面，编码器/解码器获得多个宏块块的变换大小信息，获得宏块的场/帧类型信息，并至少部分基于变换大小信息选择一个或多个边界进行循环去块， 字段/帧类型信息。 可以在垂直块边界之前的水平块边界上执行环路解块。
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公开(公告)号：US20090074073A1
公开(公告)日：2009-03-19
申请号：US12275782
申请日：2008-11-21
CPC分类号： H04N19/137 , G06K9/36 , G06K9/46 , H04N7/52 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/61 , H04N19/63 , H04N19/91
摘要： Techniques and tools for encoding and decoding motion vector information for video images are described. For example, a video encoder yields an extended motion vector code by jointly coding, for a set of pixels, a switch code, motion vector information, and a terminal symbol indicating whether subsequent data is encoded for the set of pixels. In another aspect, an encoder/decoder selects motion vector predictors for macroblocks. In another aspect, a video encoder/decoder uses hybrid motion vector prediction. In another aspect, a video encoder/decoder signals a motion vector mode for a predicted image. In another aspect, a video decoder decodes a set of pixels by receiving an extended motion vector code, which reflects joint encoding of motion information together with intra/inter-coding information and a terminal symbol. The decoder determines whether subsequent data exists for the set of pixels based on e.g., the terminal symbol.
摘要翻译： 描述用于编码和解码用于视频图像的运动矢量信息的技术和工具。 例如，视频编码器通过针对一组像素共同编码一个开关码，运动矢量信息和指示后续数据是否被编码用于像素集合的终端符号来产生扩展运动矢量码。 在另一方面，编码器/解码器为宏块选择运动矢量预测器。 在另一方面，视频编码器/解码器使用混合运动矢量预测。 在另一方面，视频编码器/解码器针对预测图像发送运动矢量模式。 在另一方面，视频解码器通过接收扩展运动矢量码来解码一组像素，该扩展运动矢量码反映运动信息的联合编码以及帧内/帧间编码信息和终端符号。 解码器基于例如终端符号确定对于像素集合是否存在后续数据。
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公开(公告)号：US07502415B2
公开(公告)日：2009-03-10
申请号：US10893801
申请日：2004-07-16
CPC分类号： H04N19/44 , H04N19/126 , H04N19/136 , H04N19/182 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools are described for decoding video data having samples that have been scaled in the spatial domain. For example, a decoder receives a bit stream that includes coded video data for a current frame. The decoder processes at least one syntax element (e.g., sequence layer flag, frame layer flag) that indicates whether the current frame should be scaled up in value in a spatial domain. If so, then the samples for the current frame are scaled up in value in the spatial domain. As another example, for a reference frame used in motion compensation for a current frame, a decoder scales samples of the reference frame so the range of the reference frame matches the range of the current frame.
摘要翻译： 描述了用于对具有在空间域中缩放的样本的视频数据进行解码的技术和工具。 例如，解码器接收包括当前帧的编码视频数据的比特流。 解码器处理至少一个语法元素（例如，序列层标志，帧层标志），其指示当前帧是否应当在空间域中的值中放大。 如果是这样，则当前帧的样本在空间域中的值被放大。 作为另一示例，对于在当前帧的运动补偿中使用的参考帧，解码器缩放参考帧的样本，使得参考帧的范围与当前帧的范围匹配。
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公开(公告)号：US07426308B2
公开(公告)日：2008-09-16
申请号：US10622284
申请日：2003-07-18
IPC分类号： G06K9/36
CPC分类号： H04N19/577 , H04N19/102 , H04N19/107 , H04N19/136 , H04N19/16 , H04N19/18 , H04N19/186 , H04N19/46 , H04N19/52 , H04N19/61
摘要： Techniques and tools for encoding and decoding video images (e.g., interlaced frames) are described. For example, a video encoder or decoder processes 4:1:1 format macroblocks comprising four 8×8 luminance blocks and four 4×8 chrominance blocks. In another aspect, fields in field-coded macroblocks are coded independently of one another (e.g., by sending encoded blocks in field order). Other aspects include DC/AC prediction techniques and motion vector prediction techniques for interlaced frames.
摘要翻译： 描述了用于编码和解码视频图像（例如，隔行扫描帧）的技术和工具。 例如，视频编码器或解码器处理包括四个8×8亮度块和四个4×8色度块的4:1:1格式宏块。 在另一方面，字段编码宏块中的字段彼此独立地被编码（例如，通过以现场顺序发送编码的块）。 其他方面包括用于交错帧的DC / AC预测技术和运动矢量预测技术。
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公开(公告)号：US20050053158A1
公开(公告)日：2005-03-10
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
IPC分类号： H04N20060101 , H04N7/12 , H04N7/26 , H04N7/50
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/解码器利用提供独立可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：US08687697B2
公开(公告)日：2014-04-01
申请号：US13455094
申请日：2012-04-24
CPC分类号： H04N19/137 , G06K9/36 , G06K9/46 , H04N7/52 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/61 , H04N19/63 , H04N19/91
摘要： Techniques and tools for encoding and decoding motion vector information for video images are described. For example, a video encoder yields an extended motion vector code by jointly coding, for a set of pixels, a switch code, motion vector information, and a terminal symbol indicating whether subsequent data is encoded for the set of pixels. In another aspect, an encoder/decoder selects motion vector predictors for macroblocks. In another aspect, a video encoder/decoder uses hybrid motion vector prediction. In another aspect, a video encoder/decoder signals a motion vector mode for a predicted image. In another aspect, a video decoder decodes a set of pixels by receiving an extended motion vector code, which reflects joint encoding of motion information together with intra/inter-coding information and a terminal symbol. The decoder determines whether subsequent data exists for the set of pixels based on e.g., the terminal symbol.
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公开(公告)号：US20120213280A1
公开(公告)日：2012-08-23
申请号：US13455094
申请日：2012-04-24
IPC分类号： H04N7/32
CPC分类号： H04N19/137 , G06K9/36 , G06K9/46 , H04N7/52 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/61 , H04N19/63 , H04N19/91
摘要： Techniques and tools for encoding and decoding motion vector information for video images are described. For example, a video encoder yields an extended motion vector code by jointly coding, for a set of pixels, a switch code, motion vector information, and a terminal symbol indicating whether subsequent data is encoded for the set of pixels. In another aspect, an encoder/decoder selects motion vector predictors for macroblocks. In another aspect, a video encoder/decoder uses hybrid motion vector prediction. In another aspect, a video encoder/decoder signals a motion vector mode for a predicted image. In another aspect, a video decoder decodes a set of pixels by receiving an extended motion vector code, which reflects joint encoding of motion information together with intra/inter-coding information and a terminal symbol. The decoder determines whether subsequent data exists for the set of pixels based on e.g., the terminal symbol.
摘要翻译： 描述用于编码和解码用于视频图像的运动矢量信息的技术和工具。 例如，视频编码器通过针对一组像素共同编码一个开关码，运动矢量信息和指示后续数据是否被编码用于像素集合的终端符号来产生扩展运动矢量码。 在另一方面，编码器/解码器为宏块选择运动矢量预测器。 在另一方面，视频编码器/解码器使用混合运动矢量预测。 在另一方面，视频编码器/解码器针对预测图像发送运动矢量模式。 在另一方面，视频解码器通过接收扩展运动矢量码来解码一组像素，该扩展运动矢量码反映运动信息的联合编码以及帧内/帧间编码信息和终端符号。 解码器基于例如终端符号确定对于像素集合是否存在后续数据。
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28.发明授权Decoding variable coded resolution video with native range/resolution post-processing operation 有权用原始范围/分辨率后处理操作解码可变编码分辨率视频公开(公告)号：US08243820B2
公开(公告)日：2012-08-14
申请号：US11118686
申请日：2005-04-29
IPC分类号： H04N7/12
CPC分类号： H04N19/59 , H04N19/107 , H04N19/136 , H04N19/152 , H04N19/156 , H04N19/164 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/179 , H04N19/46 , H04N19/70 , H04N19/80
摘要： A video codec provides for encoding and decoding pictures of a video sequence at various coded resolutions, such that pictures can be encoded at lower coded resolutions based on bit rate or other constraints while maintaining a consistent display resolution. The video codec further provide for encoding and decoding pictures of the video sequence at ranges lower than that used for display, and then expanding the range after decoding for display. The video codec applies post-processing operations, such as de-blocking, de-ringing, and color conversion, at the native resolution and range of the decoded video, prior to range expansion and upsampling for display.
摘要翻译： 视频编解码器提供以各种编码分辨率编码和解码视频序列的图像，使得可以在保持一致的显示分辨率的情况下，以比特率或其他约束为基础，以较低的编码分辨率编码图像。 视频编解码器进一步提供对视频序列的图像进行编码和解码，范围低于用于显示的视频序列，然后扩展解码后的范围进行显示。 视频编解码器在范围扩展和上采样显示之前，以解码视频的原始分辨率和范围应用后处理操作，如解块，去声和颜色转换。
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公开(公告)号：US07599438B2
公开(公告)日：2009-10-06
申请号：US10933958
申请日：2004-09-02
CPC分类号： H04N19/16 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86 , H04N19/93
摘要： Techniques and tools for using motion vector block patterns in video encoding and decoding are described. In general, a motion vector block pattern signals the presence or absence of motion vector data for a macroblock with multiple motion vectors. For example, a video decoder decodes variable length codes that represent motion vector block patterns. Each motion vector block pattern has one bit per corresponding luminance motion vector of a macroblock with multiple luminance motion vectors, where the one bit indicates whether or not motion vector data for the corresponding luminance motion vector is signaled. A video encoder performs corresponding encoding.
摘要翻译： 描述了在视频编码和解码中使用运动矢量块模式的技术和工具。 一般来说，运动矢量块模式用具有多个运动矢量的宏块发送运动矢量数据的存在或不存在。 例如，视频解码器解码表示运动矢量块图案的可变长度码。 每个运动矢量块图案具有具有多个亮度运动矢量的宏块的每个对应的亮度运动矢量的一位，其中一位指示是否用信号通知相应的亮度运动矢量的运动矢量数据。 视频编码器执行相应的编码。
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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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