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11. 发明申请

US20130003821A1 SIGNALING SYNTAX ELEMENTS FOR TRANSFORM COEFFICIENTS FOR SUB-SETS OF A LEAF-LEVEL CODING UNIT 有权
标题翻译：用于叶片编码单元子集的变换系数的信号语音元素
公开(公告)号：US20130003821A1
公开(公告)日：2013-01-03
申请号：US13413475
申请日：2012-03-06
申请人： Marta Karczewicz , Xianglin Wang , Liwei Guo
发明人： Marta Karczewicz , Xianglin Wang , Liwei Guo
IPC分类号： H04N7/26
CPC分类号： H04N19/14 , H04N19/129 , H04N19/132 , H04N19/46 , H04N19/61 , H04N19/70
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. According to these techniques, a video encoder divides a leaf-level unit of video data into a plurality of transform coefficient sub-sets. The video encoder generates, for a sub-set of the plurality of transform coefficient sub-sets, a syntax element that indicates whether or not the sub-set includes any non-zero coefficients. In some examples, the video encoder may selectively determine whether to generate the syntax element for each sub-set. A decoder may read an entropy encoded bit stream that includes the syntax element, and determine whether to decode the sub-set based on the syntax element.
摘要翻译：本公开描述了用于编码视频数据块的变换系数的技术。根据这些技术，视频编码器将视频数据的叶级单元划分为多个变换系数子集。视频编码器针对多个变换系数子集的子集生成指示子集是否包括任何非零系数的语法元素。在一些示例中，视频编码器可以选择性地确定是否为每个子集生成语法元素。解码器可以读取包括语法元素的熵编码比特流，并且基于语法元素确定是否解码子集。

12. 发明申请

US20120307888A1 RUN-MODE BASED COEFFICIENT CODING FOR VIDEO CODING 有权
标题翻译：基于运行模式的视频编码系统编码
公开(公告)号：US20120307888A1
公开(公告)日：2012-12-06
申请号：US13484068
申请日：2012-05-30
申请人： Liwei Guo , Marta Karczewicz , Xianglin Wang
发明人： Liwei Guo , Marta Karczewicz , Xianglin Wang
IPC分类号： H04N7/30 , H04N7/26 , H04N7/32
CPC分类号： H04N19/93 , H04N19/13 , H04N19/176 , H04N19/18 , H04N19/60 , H04N19/91
摘要： A video coding device is configured to code coefficients of residual blocks of video data. When a coefficient of a transform unit of video data has a scan order value that is less than a threshold and when the coefficient is the last significant coefficient in a scan order in the transform unit, the video coding device may execute a function to determine a mapping between data for the coefficient and a codeword index value, and code the data for the coefficient using a codeword associated with the codeword index value. The video coding device may comprise a video encoder or a video decoder, in some examples.
摘要翻译：视频编码装置被配置为对视频数据的残留块的系数进行编码。当视频数据的变换单位的系数具有小于阈值的扫描顺序值，并且当系数是变换单元中的扫描顺序中的最后有效系数时，视频编码装置可以执行确定在系数的数据和码字索引值之间进行映射，并且使用与码字索引值相关联的码字对该系数的数据进行编码。在一些示例中，视频编码装置可以包括视频编码器或视频解码器。

13. 发明申请

US20120147970A1 CODEWORD ADAPTATION FOR VARIABLE LENGTH CODING 审中-公开
标题翻译：可变长度编码的编码器适配
公开(公告)号：US20120147970A1
公开(公告)日：2012-06-14
申请号：US13228843
申请日：2011-09-09
申请人： Wei-Jung Chien , Xianglin Wang , Marta Karczewicz , Liwei Guo
发明人： Wei-Jung Chien , Xianglin Wang , Marta Karczewicz , Liwei Guo
IPC分类号： H04N7/26
CPC分类号： H03M7/40 , H03M7/42 , H04N19/91
摘要： In one example, this disclosure describes a method of codeword adaptation for variable length coding. The method comprises determining if a number codewords stored in a variable length coding (VLC) table satisfies a threshold; selecting a codeword adaptation scheme from a group of two or more codeword adaptation schemes based on whether the number of codewords satisfies the threshold; and applying the selected adaptation scheme to the codewords stored in the VLC table.
摘要翻译：在一个示例中，本公开描述了用于可变长度编码的码字适配的方法。该方法包括确定存储在可变长度编码（VLC）表中的数字码字是否满足阈值; 基于所述码字的数量是否满足所述阈值，从一组两个或多个码字自适应方案中选择码字适配方案; 以及将所选择的适配方案应用于存储在VLC表中的码字。

14. 发明授权

US09848197B2 Transforms in video coding 有权
公开(公告)号：US09848197B2
公开(公告)日：2017-12-19
申请号：US13414232
申请日：2012-03-07
申请人： Ying Chen , Liwei Guo , Peisong Chen , Xianglin Wang , Marta Karczewicz
发明人： Ying Chen , Liwei Guo , Peisong Chen , Xianglin Wang , Marta Karczewicz
IPC分类号： H04N19/122 , H04N19/186 , H04N19/176 , H04N19/96
CPC分类号： H04N19/186 , H04N19/122 , H04N19/176 , H04N19/96
摘要： Aspects of this disclosure relate to a method of coding video data. In an example, the method includes determining a first residual quadtree (RQT) depth at which to apply a first transform to luma information associated with a block of video data, wherein the RQT represents a manner in which transforms are applied to luma information and chroma information. The method also includes determining a second RQT depth at which to apply a second transform to the chroma information associated with the block of video data, wherein the second RQT depth is different than the first RQT depth. The method also includes coding the luma information at the first RQT depth and the chroma information at the second RQT depth.

15. 发明授权

US09338456B2 Coding syntax elements using VLC codewords 有权
标题翻译：使用VLC码字对语法元素进行编码
公开(公告)号：US09338456B2
公开(公告)日：2016-05-10
申请号：US13545478
申请日：2012-07-10
申请人： Marta Karczewicz , Liwei Guo , Xianglin Wang
发明人： Marta Karczewicz , Liwei Guo , Xianglin Wang
IPC分类号： H04N19/91
CPC分类号： H04N19/91
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. According to these techniques, a video coder (a video encoder or video decoder) stores a first VLC table array selection table in memory, and an indication of at least one difference between the first VLC table array selection table and a second VLC table array selection table. The video coder reconstructs at least one entry of the second VLC table array selection table based on the first VLC table array selection table using the stored indication of the difference between the first VLC table array selection table and a second VLC table array selection table. The video coder uses the reconstructed at least one entry of the second VLC table array selection table to code at least one block of video data.
摘要翻译：本公开描述了用于编码视频数据块的变换系数的技术。根据这些技术，视频编码器（视频编码器或视频解码器）将第一VLC表阵列选择表存储在存储器中，并且指示第一VLC表阵列选择表与第二VLC表阵列选择之间的至少一个差表。视频编码器使用存储的第一VLC表阵列选择表和第二VLC表阵列选择表之间的差的指示，基于第一VLC表阵列选择表，重建第二VLC表阵列选择表的至少一个条目。视频编码器使用重构的第二VLC表阵列选择表的至少一个条目来编码至少一个视频数据块。

16. 发明申请

US20130089138A1 CODING SYNTAX ELEMENTS USING VLC CODEWORDS 审中-公开
标题翻译：使用VLC编码的编码语音元素
公开(公告)号：US20130089138A1
公开(公告)日：2013-04-11
申请号：US13533849
申请日：2012-06-26
申请人： Liwei Guo , Joel Sole Rojals , Marta Karczewicz , Xianglin Wang
发明人： Liwei Guo , Joel Sole Rojals , Marta Karczewicz , Xianglin Wang
IPC分类号： H04N7/26
CPC分类号： H04N19/176 , H04N19/13 , H04N19/134 , H04N19/167 , H04N19/61 , H04N19/70 , H04N19/93
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. For example, according to one embodiment, a video encoder determines an lrg1Pos value associated with the transform coefficient based on the noTr1 value and a position k of the transform in the scan order of the block of video data based on using at least one table that defines an lrg1Pos value for more than one potential noTr1 value for the scan order of the block of video data. In one embodiment, the video decoder uses the determined lrg1Pos value associated with the transform coefficient to perform a structured mapping to determine a code number cn based on a determined value for the level_ID syntax element and a determined value for the run syntax element.
摘要翻译：本公开描述了用于编码视频数据块的变换系数的技术。例如，根据一个实施例，视频编码器基于使用至少一个表格，基于视频数据块的扫描顺序中的noTr1值和变换的位置k来确定与变换系数相关联的lrg1Pos值，为视频数据块的扫描顺序为多个潜在的noTr1值定义lrg1Pos值。在一个实施例中，视频解码器使用与变换系数相关联的确定的lrg1Pos值来执行结构化映射，以基于level_ID语法元素的确定值和运行语法元素的确定值来确定代码号cn。

17. 发明申请

US20120230421A1 TRANSFORMS IN VIDEO CODING 有权
标题翻译：视频编码中的变换
公开(公告)号：US20120230421A1
公开(公告)日：2012-09-13
申请号：US13414232
申请日：2012-03-07
申请人： Ying Chen , Liwei Guo , Peisong Chen , Xianglin Wang , Marta Karczewicz
发明人： Ying Chen , Liwei Guo , Peisong Chen , Xianglin Wang , Marta Karczewicz
IPC分类号： H04N7/30
CPC分类号： H04N19/186 , H04N19/122 , H04N19/176 , H04N19/96
摘要： Aspects of this disclosure relate to a method of coding video data. In an example, the method includes determining a first residual quadtree (RQT) depth at which to apply a first transform to luma information associated with a block of video data, wherein the RQT represents a manner in which transforms are applied to luma information and chroma information. The method also includes determining a second RQT depth at which to apply a second transform to the chroma information associated with the block of video data, wherein the second RQT depth is different than the first RQT depth. The method also includes coding the luma information at the first RQT depth and the chroma information at the second RQT depth.
摘要翻译：本公开的方面涉及对视频数据进行编码的方法。在一个示例中，该方法包括确定将第一变换应用于与视频数据块相关联的亮度信息的第一残余四叉树（RQT）深度，其中RQT表示将变换应用于亮度信息和色度的方式信息。该方法还包括确定将第二变换应用于与视频数据块相关联的色度信息的第二RQT深度，其中第二RQT深度不同于第一RQT深度。该方法还包括以第一RQT深度编码亮度信息和在第二RQT深度对色度信息进行编码。

18. 发明申请

US20120147971A1 CODEWORD ADAPTATION FOR VARIABLE LENGTH CODING 审中-公开
标题翻译：可变长度编码的编码器适配
公开(公告)号：US20120147971A1
公开(公告)日：2012-06-14
申请号：US13228853
申请日：2011-09-09
申请人： Wei-Jung Chien , Xianglin Wang , Marta Karczewicz , Liwei Guo
发明人： Wei-Jung Chien , Xianglin Wang , Marta Karczewicz , Liwei Guo
IPC分类号： H04N7/26 , H03M7/40
CPC分类号： H03M7/40 , H03M7/42 , H04N19/91
摘要： In one example, this disclosure describes a method of codeword adaptation for variable length coding. The method comprises applying a first codeword adaptation scheme to a first group of codewords of a variable length coding (VLC) table to change a mapping of codewords to events in the VLC table; and applying a second codeword adaptation scheme to a second group of codewords of the VLC table to change the mapping of the codewords to the events in the VLC table.
摘要翻译：在一个示例中，本公开描述了用于可变长度编码的码字适配的方法。该方法包括将第一码字适配方案应用于可变长度编码（VLC）表的第一组码字，以改变码字到VLC表中的事件的映射; 以及将第二码字适配方案应用于所述VLC表的第二组码字，以将所述码字的映射改变为所述VLC表中的事件。

19. 发明授权

US09826238B2 Signaling syntax elements for transform coefficients for sub-sets of a leaf-level coding unit 有权
公开(公告)号：US09826238B2
公开(公告)日：2017-11-21
申请号：US13413475
申请日：2012-03-06
申请人： Marta Karczewicz , Xianglin Wang , Liwei Guo
发明人： Marta Karczewicz , Xianglin Wang , Liwei Guo
IPC分类号： H04N19/14 , H04N19/70 , H04N19/46 , H04N19/129 , H04N19/61 , H04N19/132
CPC分类号： H04N19/14 , H04N19/129 , H04N19/132 , H04N19/46 , H04N19/61 , H04N19/70
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. According to these techniques, a video encoder divides a leaf-level unit of video data into a plurality of transform coefficient sub-sets. The video encoder generates, for a sub-set of the plurality of transform coefficient sub-sets, a syntax element that indicates whether or not the sub-set includes any non-zero coefficients. In some examples, the video encoder may selectively determine whether to generate the syntax element for each sub-set. A decoder may read an entropy encoded bit stream that includes the syntax element, and determine whether to decode the sub-set based on the syntax element.

20. 发明授权

US09807426B2 Applying non-square transforms to video data 有权
公开(公告)号：US09807426B2
公开(公告)日：2017-10-31
申请号：US13422828
申请日：2012-03-16
申请人： Liwei Guo , Joel Sole Rojals , Rajan Laxman Joshi , Peisong Chen , Xianglin Wang , Marta Karczewicz
发明人： Liwei Guo , Joel Sole Rojals , Rajan Laxman Joshi , Peisong Chen , Xianglin Wang , Marta Karczewicz
IPC分类号： H04N7/50 , H04N19/96 , H04N19/176 , H04N19/70 , H04N19/119 , H04N19/46 , H04N19/122
CPC分类号： H04N19/96 , H04N19/119 , H04N19/122 , H04N19/176 , H04N19/46 , H04N19/70
摘要： In one example, a device for coding video data includes a video coder, such as a video encoder or a video decoder, that is configured to code information indicative of whether a transform unit of the video data is square or non-square, and code data of the transform unit based at least in part on whether the transform unit is square or non-square. In this manner, the video coder may utilize non-square transform units. The video coder may be configured to use non-square transform units for certain situations, such as only for chrominance or luminance components or only when a corresponding prediction unit is non-square. The video coder may further be configured to perform an entropy coding process that selects context for coding data of the transform unit based on whether the transform unit is square or non-square.

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