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1. 发明申请

WO2012015650A8 CODING OF INTER PREDICTION MODES AND OF REFERENCE PICTURE LIST INDEXES FOR VIDEO CODING 审中-公开
公开(公告)号：WO2012015650A8
公开(公告)日：2012-02-02
申请号：PCT/US2011/044732
申请日：2011-07-20
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , CHEN, Peisong , WANG, Xianglin , KARCZEWICZ, Marta , CHEN, Ying , COBAN, Muhammed, Z.
发明人： CHIEN, Wei-Jung , CHEN, Peisong , WANG, Xianglin , KARCZEWICZ, Marta , CHEN, Ying , COBAN, Muhammed, Z.
IPC分类号： H04N7/26 , H04N7/50 , H04N7/36 , H04N7/46
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.

2. 发明申请

WO2012173991A1 BORDER PIXEL PADDING FOR INTRA PREDICTION IN VIDEO CODING 审中-公开
标题翻译：用于视频编码的内部预测的边界像素包装
公开(公告)号：WO2012173991A1
公开(公告)日：2012-12-20
申请号：PCT/US2012/042052
申请日：2012-06-12
申请人： QUALCOMM INCORPORATED , WANG, Xianglin , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong , CHEN, Ying
发明人： WANG, Xianglin , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong , CHEN, Ying
IPC分类号： H04N7/26 , H04N7/34 , H04N7/50
CPC分类号： H04N19/182 , H04N19/105 , H04N19/593 , H04N19/61
摘要： A video coder performs a padding operation that processes a set of border pixels according to an order. The order starts at a bottom-left border pixel and proceeds through the border pixels sequentially to a top-right border pixel. When the padding operation processes an unavailable border pixel, the padding operation predicts a value of the unavailable border pixel based on a value of a border pixel previously processed by the padding operation. The video coder may generate an intra-predicted video block based on the border pixels.
摘要翻译：视频编码器根据顺序执行处理一组边框像素的填充操作。该顺序从左下角的边框像素开始，并且顺序通过边框像素顺序到右上边框像素。当填补操作处理不可用边界像素时，填充操作基于先前由填充操作处理的边界像素的值来预测不可用边框像素的值。视频编码器可以基于边界像素生成帧内预测视频块。

3. 发明申请

WO2012061298A1 JOINT CODING OF SYNTAX ELEMENTS FOR VIDEO CODING 审中-公开
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：WO2012061298A1
公开(公告)日：2012-05-10
申请号：PCT/US2011/058608
申请日：2011-10-31
申请人： QUALCOMM INCORPORATED , WANG, Xianglin , KARCZEWICZ, Marta , CHIEN, Wei-jung , CHEN, Peisong
发明人： WANG, Xianglin , KARCZEWICZ, Marta , CHIEN, Wei-jung , CHEN, Peisong
IPC分类号： H04N7/26
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。

4. 发明申请

WO2012015649A3 JOINT CODING OF BI-DIRECTIONAL MOTION VECTORS IN GPB FRAMES 审中-公开
公开(公告)号：WO2012015649A3
公开(公告)日：2012-02-02
申请号：PCT/US2011/044730
申请日：2011-07-20
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong , WANG, Xianglin
发明人： CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong , WANG, Xianglin
IPC分类号： H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50
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.

5. 发明申请

WO2012122355A1 TRANSFORMS IN VIDEO CODING 审中-公开
标题翻译：视频编码中的变换
公开(公告)号：WO2012122355A1
公开(公告)日：2012-09-13
申请号：PCT/US2012/028233
申请日：2012-03-08
申请人： QUALCOMM INCORPORATED , CHEN, Ying , GUO, Liwei , CHEN, Peisong , KARCZEWICZ, Marta , WANG, Xianglin
发明人： CHEN, Ying , GUO, Liwei , CHEN, Peisong , KARCZEWICZ, Marta , WANG, Xianglin
IPC分类号： H04N7/26
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。

6. 发明申请

WO2013012867A3 BUFFERING PREDICTION DATA IN VIDEO CODING 审中-公开
公开(公告)号：WO2013012867A3
公开(公告)日：2013-01-24
申请号：PCT/US2012/047073
申请日：2012-07-17
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , ZHENG, Yunfei , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
发明人： CHIEN, Wei-Jung , ZHENG, Yunfei , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
IPC分类号： H04N7/26 , H04N7/34 , H04N7/36
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.

7. 发明申请

WO2012044931A1 INDICATING INTRA-PREDICTION MODE SELECTION FOR VIDEO CODING 审中-公开
标题翻译：指示视频编码的预测模式选择
公开(公告)号：WO2012044931A1
公开(公告)日：2012-04-05
申请号：PCT/US2011/054218
申请日：2011-09-30
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , WANG, Xianglin , CHIEN, Wei-jung
发明人： KARCZEWICZ, Marta , WANG, Xianglin , CHIEN, Wei-jung
IPC分类号： H04N7/26
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。

8. 发明申请

WO2011130333A1 VARIABLE LENGTH CODING OF CODED BLOCK PATTERN (CBP) IN VIDEO COMPRESSION 审中-公开
标题翻译：编码块图案（CBP）在视频压缩中的可变长度编码
公开(公告)号：WO2011130333A1
公开(公告)日：2011-10-20
申请号：PCT/US2011/032193
申请日：2011-04-12
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , CHIEN, Wei-Jung , WANG, Xianglin
发明人： KARCZEWICZ, Marta , CHIEN, Wei-Jung , WANG, Xianglin
IPC分类号： H04N7/26
CPC分类号： H04N19/91 , H04N19/122 , H04N19/13 , H04N19/176 , H04N19/196 , H04N19/463 , H04N19/70
摘要： In one example, this disclosure describes method of coding video data. The method comprises coding a block of video data as one or more luminance blocks of transform coefficients and one or more chrominance blocks of transform coefficients, and coding a coded block pattern (CBP) for the block of video data. The CBP comprises syntax information that identifies whether non-zero data is included in each of the luminance blocks and each of the chrominance blocks. Coding the CBP includes selecting one or more variable length coding (VLC) tables based on a transform size used in performing one or more transforms on the one or more luminance blocks.
摘要翻译：在一个示例中，本公开描述了对视频数据进行编码的方法。该方法包括将视频数据块编码为变换系数的一个或多个亮度块和变换系数的一个或多个色度块，以及对视频数据块的编码块模式（CBP）进行编码。 CBP包括用于识别非零数据是否包括在每个亮度块和每个色度块中的语法信息。编码CBP包括基于在一个或多个亮度块上执行一个或多个变换所使用的变换大小来选择一个或多个可变长度编码（VLC）表。

9. 发明申请

WO2013003741A1 VLC COEFFICIENT CODING FOR LUMA AND CHROMA BLOCK 审中-公开
标题翻译：用于LUMA和CHROMA块的VLC系数编码
公开(公告)号：WO2013003741A1
公开(公告)日：2013-01-03
申请号：PCT/US2012/044976
申请日：2012-06-29
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , WANG, Xianglin , CHIEN, Wei-Jung , GUO, Liwei
发明人： KARCZEWICZ, Marta , WANG, Xianglin , CHIEN, Wei-Jung , GUO, Liwei
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50 , H03M7/30
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：本公开描述了用于对视频数据块的变换系数进行编码的技术。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。

10. 发明申请

WO2012170812A1 ENHANCED INTRA-PREDICTION MODE SIGNALING FOR VIDEO CODING USING NEIGHBORING MODE 审中-公开
标题翻译：使用相邻模式进行视频编码的增强型预测模式信号
公开(公告)号：WO2012170812A1
公开(公告)日：2012-12-13
申请号：PCT/US2012/041545
申请日：2012-06-08
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , KARCZEWICZ, Marta , WANG, Xianglin
发明人： CHIEN, Wei-Jung , KARCZEWICZ, Marta , WANG, Xianglin
IPC分类号： H04N7/26 , H04N7/34
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 intraprediction 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 intraprediction 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.
摘要翻译：本公开描述了用于视频编码的帧内预测模式信令的技术。在一个示例中，视频编码器被配置为针对视频数据块确定最可能的帧内预测模式的集合，使得最可能的预测模式的集合具有等于大于预定数量的大小大于或等于2。视频编码器还被配置为至少部分地基于最可能的预测模式的集合来编码表示块的实际帧内预测模式的值，并且使用实际帧内预测模式对块进行编码。视频编码器还可以被配置为使用实际的帧内预测模式对块进行编码，例如对块进行编码或解码。视频编码器和视频解码器可以实现这些技术。

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