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21. 发明申请

WO2012087499A1 SUB-PIXEL INTERPOLATION FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的子像素插值
公开(公告)号：WO2012087499A1
公开(公告)日：2012-06-28
申请号：PCT/US2011/062334
申请日：2011-11-29
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N19/523
摘要： In one example, an apparatus includes a video coder configured to determine a first set of support pixels to interpolate a value for a first sub-integer pixel position of a pixel of a reference block of video data; determine a second, different set of support pixels used to interpolate a value for a second sub-integer pixel position of the pixel; determine a third, different set of support pixels used to interpolate a value for a third sub-integer pixel position of the pixel; combine corresponding values from the first, second, and third sets of support pixels; apply an interpolation filter to the combined values to calculate a value for a fourth sub-integer-pixel comprising a one-eighth-integer position of the pixel and code a portion of a current block of the video data relative to the fourth one-eighth-integer pixel position of the reference block.
摘要翻译：在一个示例中，一种设备包括：视频编码器，被配置为确定第一组支持像素以插值视频数据的参考块的像素的第一子整数像素位置的值; 确定用于内插所述像素的第二子整数像素位置的值的第二不同的支持像素集合; 确定用于内插像素的第三子整数像素位置的值的第三不同的支持像素集合; 组合来自第一，第二和第三组支持像素的对应值; 将内插滤波器应用于组合值以计算包括像素的八分之一整数位置的第四子整数像素的值，并且将视频数据的当前块的一部分相对于第四个八分之一 - 参考块的整数像素位置。

22. 发明申请

WO2012078767A1 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：WO2012078767A1
公开(公告)日：2012-06-14
申请号：PCT/US2011/063757
申请日：2011-12-07
申请人： QUALCOMM Incorporated , CHIEN, Wei-Jung , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
发明人： CHIEN, Wei-Jung , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
IPC分类号： H03M7/42 , H03M7/40 , 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 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表中的事件的映射; 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。

23. 发明申请

WO2012078762A1 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：WO2012078762A1
公开(公告)日：2012-06-14
申请号：PCT/US2011/063750
申请日：2011-12-07
申请人： QUALCOMM Incorporated , CHIEN, Wei-Jung , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
发明人： CHIEN, Wei-Jung , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
IPC分类号： H03M7/42 , H03M7/40 , 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 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。

24. 发明申请

WO2012051000A1 ADAPTIVE MOTION VECTOR RESOLUTION SIGNALING FOR VIDEO CODING 审中-公开
标题翻译：自适应运动矢量分解信号用于视频编码
公开(公告)号：WO2012051000A1
公开(公告)日：2012-04-19
申请号：PCT/US2011/054629
申请日：2011-10-03
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , CHEN, Peisong , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , CHEN, Peisong , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50
CPC分类号： H04N19/523 , H04N19/13 , H04N19/139 , H04N19/176 , H04N19/463 , H04N19/91
摘要： A video encoder may be configured to adaptively select a sub-pixel precision for motion vectors used to encode video data. The video encoder may further entropy encode an indication of the sub-pixel precision using context adaptive binary arithmetic coding, where the context may correspond to the size of a block of video data for the motion vector. For example, the size may correspond to the depth of a coding unit, the size of a prediction unit of the coding unit, and/or a type for the prediction unit. The video encoder may also interpolate values for one-sixteenth pixel positions of chrominance data using bilinear interpolation. The video encoder may further encode a motion vector difference value for the motion vector using an encoding scheme corresponding to the sub-pixel precision of the motion vector. A video decoder may use similar, reciprocal techniques for decoding the video data.
摘要翻译：视频编码器可以被配置为自适应地选择用于对视频数据进行编码的运动矢量的子像素精度。视频编码器可以使用上下文自适应二进制算术编码进一步对子像素精度的指示进行熵编码，其中上下文可以对应于用于运动矢量的视频数据块的大小。例如，大小可以对应于编码单元的深度，编码单元的预测单元的大小和/或预测单元的类型。视频编码器也可以使用双线性插值内插色度数据的第十六象素位置的值。视频编码器可以使用与运动矢量的子像素精度相对应的编码方案来进一步编码运动矢量的运动矢量差值。视频解码器可以使用类似的互逆技术来解码视频数据。

25. 发明申请

WO2012044840A1 VIDEO CODING USING INTRA-PREDICTION 审中-公开
标题翻译：使用INTRA-PREDICTION的视频编码
公开(公告)号：WO2012044840A1
公开(公告)日：2012-04-05
申请号：PCT/US2011/054040
申请日：2011-09-29
申请人： QUALCOMM INCORPORATED , WANG, Xianglin , KARCZEWICZ, Marta , CHIEN, Wei-Jung
发明人： WANG, Xianglin , KARCZEWICZ, Marta , CHIEN, Wei-Jung
IPC分类号： G06T9/00 , H04N7/32
CPC分类号： H04N19/50 , H04N19/11 , H04N19/122 , H04N19/157 , H04N19/176 , H04N19/463 , H04N19/593 , H04N19/61 , H04N19/70
摘要： In general, techniques of this disclosure are related to determining a prediction characteristic associated with a coding unit of video data, wherein determining the prediction characteristic includes determining a prediction type that defines a number of prediction units associated with the coding unit. Techniques of this disclosure may also be related to generating a set of available intra-prediction modes for the coding unit based on the prediction characteristic, selecting an intra-prediction mode from the available intra-prediction modes, and applying one of the available intra-prediction modes to code the coding unit.
摘要翻译：通常，本公开的技术涉及确定与视频数据的编码单元相关联的预测特性，其中确定预测特性包括确定定义与编码单元相关联的预测单元的数量的预测类型。本公开的技术还可以涉及基于预测特性生成用于编码单元的一组可用的帧内预测模式，从可用的帧内预测模式中选择帧内预测模式，以及应用可用的帧内预测模式之一，编码单元的预测模式。

26. 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.

27. 发明申请

WO2011130334A3 VARIABLE LENGTH CODING OF CODED BLOCK PATTERN (CBP) IN VIDEO COMPRESSION 审中-公开
公开(公告)号：WO2011130334A3
公开(公告)日：2011-10-20
申请号：PCT/US2011/032194
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
摘要： This disclosure describes techniques for coding video data. As one example, this disclosure describes a coded block pattern (CBP) for a coding unit (CU) of video data that indicates whether or not each of a luminance component (Y), a first chrominance component (U), and a second chrominance component (V) include at least one non-zero coefficient. According to another example, this disclosure describes a CBP that indicates whether respective blocks of a CU include at least on non-zero coefficient. The CBP described herein may be mapped to a single variable length code (VLC) code word. The VLC code word may be used by a coder to code the CU of video data.

28. 发明申请

WO2010075342A2 COMBINED SCHEME FOR INTERPOLATION FILTERING, IN-LOOP FILTERING AND POST-LOOP FILTERING IN VIDEO CODING 审中-公开
标题翻译：用于视频编码的插值滤波，环路滤波和环路后滤波的组合方案
公开(公告)号：WO2010075342A2
公开(公告)日：2010-07-01
申请号：PCT/US2009/069124
申请日：2009-12-22
申请人： QUALCOMM INCORPORATED , YE, Yan , KARCZEWICZ, Marta , CHIEN, Wei-Jung
发明人： YE, Yan , KARCZEWICZ, Marta , CHIEN, Wei-Jung
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/85 , H04N19/117 , H04N19/137 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/523 , H04N19/61 , H04N19/82
摘要： In one example, this disclosure describes filtering techniques for filtering of video blocks of a video unit. The filtering techniques may select one or more different types of filtering for each video block of the video unit based on various factors such as whether the video block is inter coded or intra coded, and whether adaptive interpolations were preformed during a motion compensation process during the encoding of the video block. When adaptive interpolations were performed, the adaptive interpolations may provide a level of filtering that renders additional filtering unnecessary or undesirable in some cases.
摘要翻译：在一个示例中，本公开描述了用于过滤视频单元的视频块的过滤技术。过滤技术可以基于各种因素（例如，视频块是帧间编码的还是帧内编码的，以及自适应插值是否在视频单元期间的运动补偿处理期间预先形成）来为视频单元的每个视频块选择一个或多个不同类型的滤波视频块的编码。当执行自适应插值时，自适应插值可以提供一定程度的滤波，以在某些情况下使附加滤波不必要或不合需要。

29. 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.

30. 发明申请

WO2012116212A1 HIERARCHY OF MOTION PREDICTION VIDEO BLOCKS 审中-公开
标题翻译：运动预测视频块的分层
公开(公告)号：WO2012116212A1
公开(公告)日：2012-08-30
申请号：PCT/US2012/026368
申请日：2012-02-23
申请人： QUALCOMM INCORPORATED , ZHENG, Yunfei , CHIEN, Wei-Jung , KARCZEWICZ, Marta
发明人： ZHENG, Yunfei , CHIEN, Wei-Jung , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N19/157 , H04N19/105 , H04N19/176 , H04N19/51 , H04N19/52
摘要： A video decoder is configured to obtain an index value for a current video block. The video decoder obtains a partition type for a current video block. The video decoder selects one of a plurality of defined sets of ordered candidate predictive video blocks based on the partition type of the current video block. A video decoder selects a predictive video block from a selected one of the plurality of defined sets of ordered candidate predictive video blocks based on an index value. A video decoder generates a motion vector for a current video block based on motion information of the predictive video block.
摘要翻译：视频解码器被配置为获得当前视频块的索引值。视频解码器获得当前视频块的分区类型。视频解码器基于当前视频块的分区类型来选择多个定义的有序候选预测视频块集合中的一个。视频解码器基于索引值从多个定义的有序候选预测视频块集合中的所选择的一个中选择预测视频块。视频解码器基于预测视频块的运动信息生成当前视频块的运动矢量。

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