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11. 发明授权

US09654785B2 Enhanced intra-prediction mode signaling for video coding using neighboring mode 有权
公开(公告)号：US09654785B2
公开(公告)日：2017-05-16
申请号：US13491076
申请日：2012-06-07
申请人： Wei-Jung Chien , Marta Karczewicz , Xianglin Wang
发明人： Wei-Jung Chien , Marta Karczewicz , Xianglin Wang
IPC分类号： H04N7/32 , H04N19/196 , H04N19/176 , H04N19/46 , H04N19/593 , H04N19/11 , H04N19/463 , H04N19/186
CPC分类号： H04N19/593 , H04N19/11 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463
摘要： This disclosure describes techniques for intra-prediction mode signaling for video coding. In one example, a video coder is configured to determine, for a block of video data, a set of most probable intra-prediction modes such that the set of most probable intra-prediction modes has a size that is equal to a predetermined number that is greater than or equal to two. The video coder is also configured to code a value representative of an actual intra-prediction mode for the block based at least in part on the set of most probable intra-prediction modes and code the block using the actual intra-prediction mode. The video coder may further be configured to code the block using the actual intra-prediction mode, e.g., to encode or decode the block. Video encoders and video decoders may implement these techniques.

12. 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。

13. 发明申请

US20120106649A1 JOINT CODING OF SYNTAX ELEMENTS FOR VIDEO CODING 有权
标题翻译：用于视频编码的语音元素的联合编码
公开(公告)号：US20120106649A1
公开(公告)日：2012-05-03
申请号：US13283335
申请日：2011-10-27
申请人： Xianglin Wang , Marta Karczewicz , Wei-Jung Chien , Peisong Chen
发明人： Xianglin Wang , Marta Karczewicz , Wei-Jung Chien , Peisong Chen
IPC分类号： H04N7/30 , H04N11/02
CPC分类号： H04N19/13 , H04N19/159 , H04N19/176
摘要： In one example, a video decoder is configured to determine whether a component of a transform unit of a coding unit of video data includes at least one non-zero coefficient based on a codeword for the transform unit, determine whether the transform unit is split into sub-transform units based on the codeword, and decode the transform unit based on the determinations. In another example, a video encoder is configured to determine whether a component of a transform unit of a coding unit of video data includes at least one non-zero coefficient, determine whether the transform unit is split into sub-transform units, select a codeword from a variable length code table, wherein the variable length code table provides an indication that the codeword corresponds to the determinations, and provide the codeword for the transform unit.
摘要翻译：在一个示例中，视频解码器被配置为基于用于变换单元的码字来确定视频数据的编码单元的变换单元的分量是否包括至少一个非零系数，确定变换单元是否被分成基于码字的子变换单元，并且基于确定来解码变换单元。在另一示例中，视频编码器被配置为确定视频数据的编码单元的变换单元的分量是否包括至少一个非零系数，确定变换单元是否被分割成子变换单元，选择码字从可变长度码表中，其中，所述可变长度码表提供所述码字对应于所述确定的指示，并且提供所述变换单元的码字。

14. 发明申请

US20120082210A1 CODING PREDICTION MODES IN VIDEO CODING 有权
标题翻译：视频编码中的编码预测模式
公开(公告)号：US20120082210A1
公开(公告)日：2012-04-05
申请号：US13248653
申请日：2011-09-29
申请人： Wei-Jung Chien , Xianglin Wang , Marta Karczewicz
发明人： Wei-Jung Chien , Xianglin Wang , Marta Karczewicz
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N19/428 , H04N19/13 , H04N19/159 , H04N19/194 , H04N19/196 , H04N19/463 , H04N19/61 , H04N19/96
摘要： A video encoder can maintain, by generating, storing, adjusting, altering, and/or updating, one or more variable length coding (VLC) tables that represent a mapping of prediction modes to codewords. One or more codewords representing a selected prediction mode can be communicated to the decoder for a CU of a frame. The decoder maintains one or more VLC tables that match the VLC tables maintained by the video encoder. Thus, based on the one or more codewords received from the video encoder, the video decoder can determine the prediction mode used to encode a CU.
摘要翻译：视频编码器可以通过生成，存储，调整，改变和/或更新表示将预测模式映射到码字的一个或多个可变长度编码（VLC）表来维持。表示所选择的预测模式的一个或多个码字可以被传送到解码器，用于帧的CU。解码器维护与视频编码器维护的VLC表匹配的一个或多个VLC表。因此，基于从视频编码器接收的一个或多个码字，视频解码器可以确定用于编码CU的预测模式。

15. 发明申请

US20120027088A1 CODING MOTION PREDICTION DIRECTION IN VIDEO CODING 有权
标题翻译：编码运动预测方向在视频编码
公开(公告)号：US20120027088A1
公开(公告)日：2012-02-02
申请号：US13179400
申请日：2011-07-08
申请人： Wei-Jung Chien , Peisong Chen , Xianglin Wang , Marta Karczewicz , Ying Chen , Muhammed Z. Coban
发明人： Wei-Jung Chien , Peisong Chen , Xianglin Wang , Marta Karczewicz , Ying Chen , Muhammed Z. Coban
IPC分类号： H04N7/32
CPC分类号： H04N19/52 , H04N19/109 , H04N19/114 , H04N19/115 , H04N19/13 , H04N19/159 , H04N19/162 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/573 , H04N19/577 , H04N19/61 , H04N19/70 , H04N19/91
摘要： This disclosure relates to techniques for reducing a cost of coding prediction information in video coding. Video blocks in a generalized P/B (GPB) frame are encoded using up to two motion vectors calculated from reference pictures in two separate reference picture lists that are identical. When one of the reference picture lists is preferred over the other reference picture list, the preferred reference picture list may be used for unidirectional prediction, by default. When a GPB frame is enabled such that the first and second reference picture lists are identical, either of the first and second reference picture lists may be used for unidirectional prediction. The techniques include coding one or more syntax elements indicating that a video block is coded using one of the unidirectional prediction mode with respect to a reference picture in a reference picture list and the bidirectional prediction mode using less than two bits.
摘要翻译：本公开涉及用于降低视频编码中的预测信息编码成本的技术。广义P / B（GPB）帧中的视频块使用相同的两个单独参考图片列表中的参考图片计算的最多两个运动矢量进行编码。当参考图像列表中的一个优于另一个参考图像列表时，默认情况下优选的参考图像列表可用于单向预测。当启用GPB帧使得第一和第二参考图片列表相同时，第一和第二参考图片列表中的任一个可以用于单向预测。这些技术包括编码一个或多个语法元素，其指示使用单向预测模式中的一个相对于参考图像列表中的参考图像和使用少于两个比特的双向预测模式来编码视频块。

16. 发明授权

US09516316B2 VLC coefficient coding for large chroma block 有权
标题翻译：用于大色度块的VLC系数编码
公开(公告)号：US09516316B2
公开(公告)日：2016-12-06
申请号：US13535536
申请日：2012-06-28
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： H04N19/61 , H04N19/91 , H04N19/176 , H04N19/13 , H04N19/60 , H04N19/186
CPC分类号： H04N19/91 , H04N19/13 , H04N19/176 , H04N19/186 , H04N19/60 , H04N19/61
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) determines whether a block of video data is a luma block or a chroma block. If the block of video data is a luma block, the video coder adaptively updates a VLC table index value based on a code number cn and value of a scaling factor. However, if the block of video data is a chroma block, the video coder adaptively updates the VLC table index value based on the code number cn and without using the scaling factor. The video coder uses the updated VLC table index value to select a VLC table of a plurality of VLC tables that are used to encode or decode the 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）确定视频数据块是亮度块还是色度块。如果视频数据块是亮度块，则视频编码器基于码数cn和缩放因子的值自适应地更新VLC表索引值。然而，如果视频数据块是色度块，则视频编码器基于码数cn自适应地更新VLC表索引值，而不使用缩放因子。视频编码器使用更新的VLC表索引值来选择用于对视频数据块进行编码或解码的多个VLC表的VLC表。

17. 发明授权

US09398308B2 Coding motion prediction direction in video coding 有权
标题翻译：视频编码中编码运动预测方向
公开(公告)号：US09398308B2
公开(公告)日：2016-07-19
申请号：US13179400
申请日：2011-07-08
申请人： Wei-Jung Chien , Peisong Chen , Xianglin Wang , Marta Karczewicz , Ying Chen , Muhammed Z. Coban
发明人： Wei-Jung Chien , Peisong Chen , Xianglin Wang , Marta Karczewicz , Ying Chen , Muhammed Z. Coban
IPC分类号： H04N19/52 , H04N19/159 , H04N19/176 , H04N19/70 , H04N19/46 , H04N19/196 , H04N19/115 , H04N19/61 , H04N19/109 , H04N19/114 , H04N19/463 , H04N19/91 , H04N19/162 , H04N19/177 , H04N19/174 , H04N19/573 , H04N19/577 , H04N19/13
CPC分类号： H04N19/52 , H04N19/109 , H04N19/114 , H04N19/115 , H04N19/13 , H04N19/159 , H04N19/162 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/573 , H04N19/577 , H04N19/61 , H04N19/70 , H04N19/91
摘要： This disclosure relates to techniques for reducing a cost of coding prediction information in video coding. Video blocks in a generalized P/B (GPB) frame are encoded using up to two motion vectors calculated from reference pictures in two separate reference picture lists that are identical. When one of the reference picture lists is preferred over the other reference picture list, the preferred reference picture list may be used for unidirectional prediction, by default. When a GPB frame is enabled such that the first and second reference picture lists are identical, either of the first and second reference picture lists may be used for unidirectional prediction. The techniques include coding one or more syntax elements indicating that a video block is coded using one of the unidirectional prediction mode with respect to a reference picture in a reference picture list and the bidirectional prediction mode using less than two bits.
摘要翻译：本公开涉及用于降低视频编码中的预测信息编码成本的技术。广义P / B（GPB）帧中的视频块使用相同的两个单独参考图片列表中的参考图片计算的最多两个运动矢量进行编码。当参考图像列表中的一个优于另一个参考图像列表时，默认情况下优选的参考图像列表可用于单向预测。当启用GPB帧使得第一和第二参考图片列表相同时，第一和第二参考图片列表中的任一个可以用于单向预测。这些技术包括编码一个或多个语法元素，其指示使用单向预测模式中的一个相对于参考图像列表中的参考图像和使用少于两个比特的双向预测模式来编码视频块。

18. 发明授权

US09357229B2 Coding motion vectors in video coding 有权
标题翻译：在视频编码中编码运动矢量
公开(公告)号：US09357229B2
公开(公告)日：2016-05-31
申请号：US13179427
申请日：2011-07-08
申请人： Wei-Jung Chien , Marta Karczewicz , Peisong Chen , Xianglin Wang
发明人： Wei-Jung Chien , Marta Karczewicz , Peisong Chen , Xianglin Wang
IPC分类号： H04N19/52 , H04N19/517 , H04N19/513 , H04N19/577 , H04N19/58 , H04N19/61 , H04N19/159 , H04N19/176 , H04N19/70 , H04N19/46 , H04N19/196 , H04N19/115 , H04N19/109 , H04N19/114 , H04N19/463 , H04N19/91 , H04N19/162 , H04N19/177 , H04N19/174 , H04N19/573
CPC分类号： H04N19/52 , H04N19/109 , H04N19/114 , H04N19/115 , H04N19/13 , H04N19/159 , H04N19/162 , H04N19/174 , H04N19/176 , H04N19/177 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/573 , H04N19/577 , H04N19/61 , H04N19/70 , H04N19/91
摘要： This disclosure relates to techniques for reducing a cost of coding prediction information in video coding. Video blocks in a generalized P/B (GPB) frame are encoded using up to two motion vectors calculated from reference pictures in two separate reference picture lists that are identical. Video blocks of a GPB frame may, therefore, be encoded using a bidirectional prediction mode with a first motion vector from a reference picture in a first reference picture list and a second motion vector from the same or substantially similar reference picture in a second reference picture list. The techniques include jointly coding the first and second motion vectors for a video block of a GPB frame. The techniques include coding the first motion vector relative to a first motion predictor generated from a motion vector of a neighboring block, and coding the second motion vector relative to the first motion vector.
摘要翻译：本公开涉及用于降低视频编码中的预测信息编码成本的技术。广义P / B（GPB）帧中的视频块使用相同的两个单独参考图片列表中的参考图片计算的最多两个运动矢量进行编码。因此，可以使用具有来自第一参考图像列表中的参考图像的第一运动矢量和来自第二参考图像中相同或基本相似的参考图像的第二运动矢量的双向预测模式来编码GPB帧的视频块列表。这些技术包括联合编码GPB帧的视频块的第一和第二运动矢量。所述技术包括相对于从相邻块的运动矢量生成的第一运动预测器对第一运动矢量进行编码，以及相对于第一运动矢量对第二运动矢量进行编码。

19. 发明授权

US09172963B2 Joint coding of syntax elements for video coding 有权
标题翻译：用于视频编码的语法元素的联合编码
公开(公告)号：US09172963B2
公开(公告)日：2015-10-27
申请号：US13283335
申请日：2011-10-27
申请人： Xianglin Wang , Marta Karczewicz , Wei-Jung Chien , Peisong Chen
发明人： Xianglin Wang , Marta Karczewicz , Wei-Jung Chien , Peisong Chen
IPC分类号： H04N19/13 , H04N19/159 , H04N19/176
CPC分类号： H04N19/13 , H04N19/159 , H04N19/176
摘要： In one example, a video decoder is configured to determine whether a component of a transform unit of a coding unit of video data includes at least one non-zero coefficient based on a codeword for the transform unit, determine whether the transform unit is split into sub-transform units based on the codeword, and decode the transform unit based on the determinations. In another example, a video encoder is configured to determine whether a component of a transform unit of a coding unit of video data includes at least one non-zero coefficient, determine whether the transform unit is split into sub-transform units, select a codeword from a variable length code table, wherein the variable length code table provides an indication that the codeword corresponds to the determinations, and provide the codeword for the transform unit.
摘要翻译：在一个示例中，视频解码器被配置为基于用于变换单元的码字来确定视频数据的编码单元的变换单元的分量是否包括至少一个非零系数，确定变换单元是否被分成基于码字的子变换单元，并且基于确定来解码变换单元。在另一示例中，视频编码器被配置为确定视频数据的编码单元的变换单元的分量是否包括至少一个非零系数，确定变换单元是否被分割成子变换单元，选择码字从可变长度码表中，其中可变长度码表提供码字对应于确定的指示，并提供用于变换单元的码字。

20. 发明授权

US09025661B2 Indicating intra-prediction mode selection for video coding 有权
标题翻译：指示视频编码的帧内预测模式选择
公开(公告)号：US09025661B2
公开(公告)日：2015-05-05
申请号：US13248760
申请日：2011-09-29
申请人： Marta Karczewicz , Xianglin Wang , Wei-Jung Chien
发明人： Marta Karczewicz , Xianglin Wang , Wei-Jung Chien
IPC分类号： H04N11/04 , H04N19/18 , H04N19/196 , H04N19/13 , H04N19/11 , H04N19/463 , H04N19/91
CPC分类号： H04N19/18 , H04N19/11 , H04N19/13 , H04N19/196 , H04N19/463 , H04N19/91
摘要： For a block of video data, a video encoder can signal to a video decoder a selected intra-prediction mode using a codeword that is mapped to a modified intra-prediction mode index. The video decoder can receive the codeword, determine the modified intra-prediction mode index corresponding to the codeword, determine most probable modes based on a context, map the modified intra-prediction mode index to an intra-prediction mode index by comparing the modified intra-prediction mode index to the mode indexes of the most probable modes, and determine the selected intra-prediction mode used to encode the block of video data based on the intra-prediction mode index.
摘要翻译：对于视频数据块，视频编码器可以使用映射到修改的帧内预测模式索引的码字向视频解码器发送选定的帧内预测模式。视频解码器可以接收码字，确定与码字对应的经修改的帧内预测模式索引，基于上下文确定最可能的模式，通过比较修改后的帧内预测模式索引将修改的帧内预测模式索引映射到帧内预测模式索引 - 预测模式索引到最可能模式的模式索引，并且基于帧内预测模式索引确定用于对视频数据块进行编码的所选择的帧内预测模式。

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