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1. 发明授权

US09699456B2 Buffering prediction data in video coding 有权
公开(公告)号：US09699456B2
公开(公告)日：2017-07-04
申请号：US13550377
申请日：2012-07-16
申请人： Wei-Jung Chien , Yunfei Zheng , Xianglin Wang , Marta Karczewicz , Liwei Guo
发明人： Wei-Jung Chien , Yunfei Zheng , Xianglin Wang , Marta Karczewicz , Liwei Guo
IPC分类号： H04N7/26 , H04N7/32 , H04N19/11 , H04N19/159 , H04N19/176 , H04N19/147 , H04N19/46 , H04N19/51 , H04N19/593
CPC分类号： H04N19/11 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/51 , H04N19/593
摘要： In an example, aspects of this disclosure relate to a method of coding video data that generally includes determining prediction information for a block of video data, where the block is included in a coded unit of video data and positioned below a top row of above-neighboring blocks in the coded unit, and where the prediction information for the block is based on prediction information from one or more other blocks in the coded unit but not based on prediction information from any of the top row of blocks in the coded unit. The method also generally includes coding the block based on the determined prediction information.

2. 发明申请

US20130070848A1 LINE BUFFER REDUCTION FOR SHORT DISTANCE INTRA-PREDICTION 有权
标题翻译：线路缓冲减少短距离预测
公开(公告)号：US20130070848A1
公开(公告)日：2013-03-21
申请号：US13613382
申请日：2012-09-13
申请人： Liwei Guo , Marta Karczewicz , Xianglin Wang
发明人： Liwei Guo , Marta Karczewicz , Xianglin Wang
IPC分类号： H04N7/32
CPC分类号： H04N19/13 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/61 , H04N19/91
摘要： A video coder, such as a video encoder or a video decoder, identifies an entropy coding context in a set of one or more entropy coding contexts. The video coder identifies the entropy coding context without reference to a neighboring coding unit that is above a current coding unit in a current picture. The video coder then entropy codes a short distance intra-prediction (SDIP) syntax element of a coding unit (CU) using the identified entropy coding context. The SDIP syntax element at least partially defines a mode by which the CU is partitioned into a set of one or more transform units.
摘要翻译：诸如视频编码器或视频解码器的视频编码器识别一组或多个熵编码上下文中的熵编码上下文。视频编码器不参照当前图像中当前编码单元之上的相邻编码单元来识别熵编码上下文。视频编码器然后使用所识别的熵编码上下文对编码单元（CU）的短距离帧内预测（SDIP）语法元素进行熵编码。 SDIP语法元素至少部分地定义了CU被分割成一组一个或多个变换单元的模式。

3. 发明授权

US09800870B2 Line buffer reduction for short distance intra-prediction 有权
公开(公告)号：US09800870B2
公开(公告)日：2017-10-24
申请号：US13613382
申请日：2012-09-13
申请人： Liwei Guo , Marta Karczewicz , Xianglin Wang
发明人： Liwei Guo , Marta Karczewicz , Xianglin Wang
IPC分类号： H04N7/32 , H04N19/13 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/91 , H04N19/61
CPC分类号： H04N19/13 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/61 , H04N19/91
摘要： A video coder, such as a video encoder or a video decoder, identifies an entropy coding context in a set of one or more entropy coding contexts. The video coder identifies the entropy coding context without reference to a neighboring coding unit that is above a current coding unit in a current picture. The video coder then entropy codes a short distance intra-prediction (SDIP) syntax element of a coding unit (CU) using the identified entropy coding context. The SDIP syntax element at least partially defines a mode by which the CU is partitioned into a set of one or more transform units.

4. 发明授权

US09491491B2 Run-mode based coefficient coding for video coding 有权
标题翻译：用于视频编码的基于运行模式的系数编码
公开(公告)号：US09491491B2
公开(公告)日：2016-11-08
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 , H04N19/93 , H04N19/176 , H04N19/13 , H04N19/60 , H04N19/91 , H04N19/18
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。

5. 发明申请

US20130136175A1 NON-SQUARE TRANSFORM UNITS AND PREDICTION UNITS IN VIDEO CODING 有权
标题翻译：非正方形变形单元和预测单元在视频编码中的应用
公开(公告)号：US20130136175A1
公开(公告)日：2013-05-30
申请号：US13608380
申请日：2012-09-10
申请人： Xianglin Wang , Marta Karczewicz , Liwei Guo
发明人： Xianglin Wang , Marta Karczewicz , Liwei Guo
IPC分类号： H04N7/26 , H04N7/32
CPC分类号： H04N19/61 , H04N19/11 , H04N19/122 , H04N19/157 , H04N19/176 , H04N19/593
摘要： This disclosure proposes techniques for transform partitioning in an intra-prediction video coding process. In one example, for a given intra-predicted block, a reduced number of transform unit partition options is allowed, based on certain conditions. In another example, transform units are decoupled from prediction units for intra-predicted block. For a given prediction unit, transforms of different sizes and shapes from the prediction unit may be applied. In another example, a reduced number of intra-prediction modes are allowed for a prediction unit having a non-square shape.
摘要翻译：本公开提出了在帧内预测视频编码处理中进行变换划分的技术。在一个示例中，对于给定的帧内预测块，基于某些条件允许减少数量的变换单元分区选项。在另一示例中，变换单元与用于帧内预测块的预测单元去耦。对于给定的预测单元，可以应用来自预测单元的不同大小和形状的变换。在另一示例中，对于具有非正方形形状的预测单元，允许减少数量的帧内预测模式。

6. 发明申请

US20130003824A1 APPLYING NON-SQUARE TRANSFORMS TO VIDEO DATA 有权
标题翻译：将非正方形变换应用于视频数据
公开(公告)号：US20130003824A1
公开(公告)日：2013-01-03
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： H04N7/30 , H04N7/32 , H04N11/02
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.
摘要翻译：在一个示例中，用于编码视频数据的设备包括诸如视频编码器或视频解码器的视频编码器，其被配置为对指示视频数据的变换单元是正方形还是非正方形的信息进行编码，以及代码所述变换单元的数据至少部分地基于所述变换单元是平方还是非正方形。以这种方式，视频编码器可以利用非正方形变换单元。视频编码器可以被配置为在诸如仅用于色度或亮度分量的某些情况下使用非平方变换单元，或者仅当对应的预测单元是非正方形时才使用。视频编码器还可以被配置为执行熵编码处理，其基于变换单元是正方形还是非正方形来选择用于对变换单元的数据进行编码的上下文。

7. 发明申请

US20120147947A1 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：US20120147947A1
公开(公告)日：2012-06-14
申请号：US13228875
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 includes applying a first codeword adaptation scheme to groups of codewords in a variable length coding (VLC) table to change mappings of codewords within the groups to events in the VLC table; and applying a second codeword adaptation scheme to individual codewords within the groups of codewords in the VLC table to change mappings of the codewords to the events within the groups 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。所述方法包括：在可变长度编码（VLC）表中应用码字组适配方案以改变所述组内的码字的映射到所述VLC表中的事件; 以及将所述VLC表中的码字组内的各个码字应用第二码字适配方案，以将所述码字的映射改变为所述VLC表中的组内的事件。

8. 发明授权

US09490839B2 Variable length coding of video block coefficients 有权
标题翻译：视频块系数的可变长度编码
公开(公告)号：US09490839B2
公开(公告)日：2016-11-08
申请号：US13338891
申请日：2011-12-28
申请人： Marta Karczewicz , Xianglin Wang , Wei-Jung Chien , Liwei Guo
发明人： Marta Karczewicz , Xianglin Wang , Wei-Jung Chien , Liwei Guo
IPC分类号： H04N11/04 , H03M7/42 , H04N19/13 , H04N19/60 , H04N19/93
CPC分类号： H03M7/42 , H04N19/13 , H04N19/60 , H04N19/93
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. According to some aspects of this disclosure, a coder (e.g., an encoder or decoder) may map between a code number cn and level_ID and run values associated with a first transform coefficient of the block of video data according to a first technique (e.g., a structured mapping), and map between a code number cn and level_ID and run values associated with a second coefficient of the block using a second technique. According to other aspects of this disclosure, the coder may map between a code number cn and level_ID and run syntax elements using different mathematical relationships, depending on a determined value of the code number cn or the level_ID syntax element. For example, the coder may access a mapping table of a plurality of mapping tables differently, dependent on the determined value.
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。根据本公开的一些方面，编码器（例如，编码器或解码器）可以根据第一技术（例如，编码器或解码器）在视频数据块的第一变换系数与代码号cn和level_ID之间映射和运行值，结构化映射），并且使用第二技术在代码号cn和level_ID之间映射和与块的第二系数相关联的运行值。根据本公开的其他方面，编码器可以根据代码号cn或level_ID语法元素的确定值，在代码号cn和level_ID之间映射并使用不同的数学关系运行语法元素。例如，编码器可以根据确定的值不同地访问多个映射表的映射表。

9. 发明申请

US20130022119A1 BUFFERING PREDICTION DATA IN VIDEO CODING 有权
标题翻译：在视频编码中缓冲预测数据
公开(公告)号：US20130022119A1
公开(公告)日：2013-01-24
申请号：US13550377
申请日：2012-07-16
申请人： Wei-Jung Chien , Yunfei Zheng , Xianglin Wang , Marta Karczewicz , Liwei Guo
发明人： Wei-Jung Chien , Yunfei Zheng , Xianglin Wang , Marta Karczewicz , Liwei Guo
IPC分类号： H04N7/32
CPC分类号： H04N19/11 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/51 , H04N19/593
摘要： In an example, aspects of this disclosure relate to a method of coding video data that generally includes determining prediction information for a block of video data, where the block is included in a coded unit of video data and positioned below a top row of above-neighboring blocks in the coded unit, and where the prediction information for the block is based on prediction information from one or more other blocks in the coded unit but not based on prediction information from any of the top row of blocks in the coded unit. The method also generally includes coding the block based on the determined prediction information.
摘要翻译：在一个示例中，本公开的方面涉及一种编码视频数据的方法，其通常包括确定视频数据块的预测信息，其中该块被包括在视频数据的经译码单元中并位于上一行的上一行之前，并且其中块的预测信息基于来自编码单元中的一个或多个其他块的预测信息，而不是基于来自编码单元中的顶行中的任一个的预测信息。该方法还通常包括基于所确定的预测信息对块进行编码。

10. 发明申请

US20130003859A1 TRANSITION BETWEEN RUN AND LEVEL CODING MODES 审中-公开
标题翻译：运行和电平编码模式之间的过渡
公开(公告)号：US20130003859A1
公开(公告)日：2013-01-03
申请号：US13467756
申请日：2012-05-09
申请人： Marta Karczewicz , Liwei Guo , Xianglin Wang
发明人： Marta Karczewicz , Liwei Guo , Xianglin Wang
IPC分类号： H04N7/26
CPC分类号： H04N19/18 , H04N19/103 , H04N19/13 , H04N19/14 , H04N19/46 , H04N19/61 , H04N19/70
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. According to some aspects of this disclosure, a video coder (e.g., encoder, decoder) may code a first coefficient of a leaf-level unit of video data using a run encoding mode. The coder may code a second coefficient of the leaf-level unit of video data using a level encoding mode. After coding at least one coefficient using the level coding mode, the coder may use the run coding mode to code a third other coefficient of the leaf-level unit of video data. According to other aspects, an encoder may signal, to a decoder, at least one indication of a transition between level and run coding modes. According to still other aspects, a coder may automatically determine when to transition between the level and run coding modes.
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。根据本公开的一些方面，视频编码器（例如，编码器，解码器）可以使用运行编码模式来编码视频数据的叶级单元的第一系数。编码器可以使用电平编码模式来编码视频数据的叶级单元的第二系数。在使用电平编码模式编码至少一个系数之后，编码器可以使用运行编码模式来编码视频数据的叶级单元的第三其他系数。根据其它方面，编码器可以向解码器发送电平和运行编码模式之间的转换的至少一个指示。根据其他方面，编码器可以自动确定何时在电平和运行编码模式之间转换。

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