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41. 发明申请

WO2012078756A1 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：WO2012078756A1
公开(公告)日：2012-06-14
申请号：PCT/US2011/063740
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 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。

42. 发明申请

WO2012044935A1 CODING PREDICTION MODES IN VIDEO CODING 审中-公开
标题翻译：视频编码中的编码预测模式
公开(公告)号：WO2012044935A1
公开(公告)日：2012-04-05
申请号：PCT/US2011/054229
申请日：2011-09-30
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 , H04N7/50
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。

43. 发明申请

WO2012044440A1 VARIABLE LENGTH CODING OF VIDEO BLOCK COEFFICIENTS 审中-公开
标题翻译：视频块系数的可变长度编码
公开(公告)号：WO2012044440A1
公开(公告)日：2012-04-05
申请号：PCT/US2011/050516
申请日：2011-09-06
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 , H03M7/40
CPC分类号： H03M7/40 , H03M7/4056 , H04N19/13 , H04N19/159 , H04N19/18 , H04N19/93
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. According to one aspect of this disclosure, a coder (e.g., an encoder or decoder) may map between a code number cn and a level_lD value and an run value based on a structured mapping. According to other other aspects of this disclosure, the coder may map between a code number cn and a level_lD value and an run value for the current transform coefficient using a first technique or a second technique based on a coded block type of a block of video data being coded. For example, if the coded block type is a first coded block type, the coder may use a structured mapping. However, if the coded block type is a second coded block type different than the first coded block type, the coder may access one or more mapping tables stored in memory to perform the mapping.
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。根据本公开的一个方面，编码器（例如，编码器或解码器）可以在代码号cn和level_lD值之间映射，并且基于结构化映射来映射运行值。根据本公开的其他其他方面，编码器可以使用基于视频块的编码块类型的第一技术或第二技术在代码号cn和level_ID值之间映射当前变换系数的运行值数据被编码。例如，如果编码块类型是第一编码块类型，则编码器可以使用结构化映射。然而，如果编码块类型是不同于第一编码块类型的第二编码块类型，则编码器可以访问存储在存储器中的一个或多个映射表以执行映射。

44. 发明申请

WO2012027093A1 MOTION DIRECTION BASED ADAPTIVE MOTION VECTOR RESOLUTION SIGNALING FOR VIDEO CODING 审中-公开
标题翻译：基于运动方向的自适应运动矢量分解信号用于视频编码
公开(公告)号：WO2012027093A1
公开(公告)日：2012-03-01
申请号：PCT/US2011/046954
申请日：2011-08-08
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong
发明人： CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N19/523 , H04N19/105 , H04N19/159 , H04N19/176 , H04N19/52
摘要： Video coding devices may signal or determine sub-integer pixel precision for motion vectors based on a direction of prediciion for ihe moiion vector, e.g., whether a reference frame is to be displayed earlier or later than a current frame, in one example, an apparatus includes a video encoder configured to encode a block of video data using a motion vector that refers to a reference frame in one of a plurality of sets of reference frames with a selected sub-inieger pixel precision, generate a value representative of the selected precision for the motion vector based on the one of the plurality of sets of reference frames referred to by the motion vector, and output the encoded block and the generated value representative of the selected precision for the motion vector, A video decoder may determine a sub-integer pixel precision for the motion vector based on the value.
摘要翻译：在一个示例中，视频编码装置可以基于对于矢量向量的谓词的方向（例如，参考帧是否要比当前帧更早或更晚地显示）来向运动矢量发信号或确定子整数像素精度包括视频编码器，其被配置为使用参考具有所选择的独立子像素精度的多组参考帧之一中的参考帧的运动矢量对视频数据块进行编码，生成代表所选择的精度的值基于由运动矢量引用的多组参考帧之一的运动矢量，并且输出代表运动矢量的所选择的精度的编码块和生成的值。视频解码器可以确定一个子整数基于该值的运动矢量的像素精度。

45. 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.

46. 发明申请

WO2011160010A1 JOINT CODING OF PARTITION INFORMATION IN VIDEO CODING 审中-公开
标题翻译：视频编码中分割信息的联合编码
公开(公告)号：WO2011160010A1
公开(公告)日：2011-12-22
申请号：PCT/US2011/040872
申请日：2011-06-17
申请人： QUALCOMM INCORPORATED , WANG, Xianglin , CHIEN, Wei-Jung , KARCZEWICZ, Marta
发明人： WANG, Xianglin , CHIEN, Wei-Jung , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/93 , H04N19/13 , H04N19/136 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/61 , H04N19/96
摘要： In one example, a video decoder is configured to receive a value for a coding unit of video data, wherein the coding unit is partitioned into a plurality of sub-coding units, determine whether the sub-coding units are partitioned into further sub-coding units based on the value, and decode the sub-coding units and the further sub-coding units. In another example, a video encoder is configured to partition a coding unit of video data into a plurality of sub-coding units, determine whether to partition the sub-coding units into further sub-coding units, and encode the coding unit to include a value that indicates whether the sub-coding units are partitioned into the further sub-coding units.
摘要翻译：在一个示例中，视频解码器被配置为接收视频数据的编码单元的值，其中编码单元被划分为多个子编码单元，确定子编码单元是否被划分为另外的子编码基于该值的单位，并对子编码单元和其他子编码单元进行解码。在另一示例中，视频编码器被配置为将视频数据的编码单元划分为多个子编码单元，确定是否将子编码单元划分为进一步的子编码单元，并将编码单元编码为包括指示子编码单元是否被划分为其他子编码单元的值。

47. 发明申请

WO2010006250A1 FILTERING VIDEO DATA USING A PLURALITY OF FILTERS 审中-公开
标题翻译：使用多余的过滤器过滤视频数据
公开(公告)号：WO2010006250A1
公开(公告)日：2010-01-14
申请号：PCT/US2009/050237
申请日：2009-07-10
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , CHIEN, Wei-Jung
发明人： KARCZEWICZ, Marta , CHIEN, Wei-Jung
IPC分类号： H04N7/26
CPC分类号： H04N19/85 , H04N19/117 , H04N19/44 , H04N19/46 , H04N19/80
摘要： Systems and methods of filtering video data using a plurality of filters are disclosed. In an embodiment, a method includes receiving and decoding a plurality of filters embedded in a video data bitstream at a video decoder. The method includes selecting, based on information included in the video data bitstream, a particular filter of the plurality of filters. The method further includes applying the particular filter to at least a portion of decoded video data of the video data bitstream to produce filtered decoded video data.
摘要翻译：公开了使用多个滤波器对视频数据进行滤波的系统和方法。在一个实施例中，一种方法包括在视频解码器处接收和解码嵌入在视频数据比特流中的多个滤波器。该方法包括基于视频数据比特流中包含的信息来选择多个滤波器的特定滤波器。该方法还包括将特定滤波器应用于视频数据比特流的解码视频数据的至少一部分以产生经滤波的解码视频数据。

48. 发明申请

WO2011006004A1 NON-ZERO ROUNDING AND PREDICTION MODE SELECTION TECHNIQUES IN VIDEO ENCODING 审中-公开
标题翻译：视频编码中的非零圆和预测模式选择技术
公开(公告)号：WO2011006004A1
公开(公告)日：2011-01-13
申请号：PCT/US2010/041423
申请日：2010-07-08
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , CHEN, Peisong , YE, Yan
发明人： KARCZEWICZ, Marta , CHEN, Peisong , YE, Yan
IPC分类号： H04N7/36 , H04N7/46 , H04N7/26 , H04N7/50
CPC分类号： H04N19/577 , H04N19/105 , H04N19/124 , H04N19/147 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/573 , H04N19/61 , H04N19/91
摘要： In one aspect of this disclosure, rounding adjustments to bi-directional predictive data may be purposely eliminated to provide predictive data that lacks any rounding bias. In this case, rounded and unrounded predictive data may both be considered in a rate-distortion analysis to identify the best data for prediction of a given video block. In another aspect of this disclosure, techniques are described for selecting among default weighted prediction, implicit weighted prediction, and explicit weighted prediction. In this context, techniques are also described for adding offset to prediction data, e.g., using the format of explicit weighted prediction to allow for offsets to predictive data that is otherwise determined by implicit or default weighted prediction.
摘要翻译：在本公开的一个方面，可以有意地消除双向预测数据的舍入调整以提供缺少任何舍入偏差的预测数据。在这种情况下，可以在速率失真分析中考虑四舍五入和未包围的预测数据，以识别用于预测给定视频块的最佳数据。在本公开的另一方面，描述了用于在默认加权预测，隐式加权预测和显式加权预测之间进行选择的技术。在这种情况下，还描述了用于将偏移量添加到预测数据的技术，例如使用显式加权预测的格式来允许否则由隐含或默认加权预测确定的预测数据的偏移。

49. 发明申请

WO2010039492A2 OFFSET CALCULATION IN SWITCHED INTERPOLATION FILTERS 审中-公开
标题翻译：开关插入滤波器的偏移计算
公开(公告)号：WO2010039492A2
公开(公告)日：2010-04-08
申请号：PCT/US2009/057831
申请日：2009-09-22
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , MOTTA, Giovanni , YE, Yan , PEISONG, Chen
发明人： KARCZEWICZ, Marta , MOTTA, Giovanni , YE, Yan , PEISONG, Chen
IPC分类号： H04N7/36
CPC分类号： H04N7/50 , H04N19/172 , H04N19/176 , H04N19/52 , H04N19/523 , H04N19/577 , H04N19/61
摘要： This disclosure describes techniques for adding offset to predictive video blocks during video coding. In one example, a method of encoding a video block includes interpolating a first block of predictive values based on a first reference video unit within a first list of reference data, and a second block of predictive values based on a second reference video unit within a second list of reference data, calculating, for sub-integer pixel positions, a first offset value based on the first block and the current video block, and a second offset value based on the first offset value and the second block, determining a final block of offset values based on the first block of predictive values, the second block of predictive values, the first offset values, and the second offset values, and encoding the current video block based on the final block of offset values.
摘要翻译：本公开描述了在视频编码期间将偏移量添加到预测视频块的技术。在一个示例中，编码视频块的方法包括基于第一参考数据列表内的第一参考视频单元和基于第一参考视频单元中的第二参考视频单元的第二块预测值来内插第一预测值块参考数据的第二列表，针对子整数像素位置，基于第一块和当前视频块计算第一偏移值，以及基于第一偏移值和第二块计算第二偏移值，确定最终块基于预测值的第一块，预测值的第二块，第一偏移值和第二偏移值，并且基于最终的偏移值块对当前视频块进行编码。

50. 发明申请

WO2010005808A1 VIDEO ENCODING BY FILTER SELECTION 审中-公开
标题翻译：通过过滤器选择的视频编码
公开(公告)号：WO2010005808A1
公开(公告)日：2010-01-14
申请号：PCT/US2009/048829
申请日：2009-06-26
申请人： QUALCOMM INCORPORATED , MOTTA, Giovanni , KARCZEWICZ, Marta , YE, Yan
发明人： MOTTA, Giovanni , KARCZEWICZ, Marta , YE, Yan
IPC分类号： H04N7/26
CPC分类号： H04N19/577 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/19 , H04N19/192 , H04N19/523 , H04N19/61 , H04N19/80
摘要： A method and a device are described for selecting between multiple available filters in an encoder to provide a frame having a low error and distortion rate. For each full and sub pixel position, determining whether to use an alternative filter over the default filter during interpolation by estimating the rate distortion gain of using each filter and signaling to the decoder the optimal filter(s) applied to each full and sub-pixel position. In one embodiment, identifying a reference frame and a current frame, interpolating the reference frame using a default filter to create a default interpolated frame, interpolating the reference frame using an alternative filter to create an alternative interpolated frame, determining for each sub-pixel position whether to use the default filter or the alternative filter based on a minimal cost to generate a final reference frame.
摘要翻译：描述了用于在编码器中的多个可用滤波器之间进行选择以提供具有低误差和失真率的帧的方法和装置。对于每个完整和子像素位置，通过估计使用每个滤波器的速率失真增益并向解码器发送信号，确定在插值期间是否使用默认滤波器上的替代滤波器，将最佳滤波器应用于每个全像素和子像素位置。在一个实施例中，识别参考帧和当前帧，使用默认滤波器内插参考帧以创建默认内插帧，使用替代滤波器内插参考帧以创建替代插值帧，确定每个子像素位置是否使用默认过滤器或替代过滤器基于最小成本生成最终参考帧。

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