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101. 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。

102. 发明申请

WO2011002809A2 TEMPLATE MATCHING FOR VIDEO CODING 审中-公开
标题翻译：视频编码的模板匹配
公开(公告)号：WO2011002809A2
公开(公告)日：2011-01-06
申请号：PCT/US2010/040475
申请日：2010-06-29
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , CHIEN, Wei-Jung
发明人： KARCZEWICZ, Marta , CHIEN, Wei-Jung
IPC分类号： H04N7/36
CPC分类号： H04N19/00733 , H04N19/105 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/46 , H04N19/51 , H04N19/573 , H04N19/577
摘要： In one aspect of this disclosure, template matching motion prediction is applied to B frames. In another aspect of this disclosure, template matching motion prediction as applied to video block coding may include generating a template offset, generating a weighted sum of absolute differences, selecting a number of hypotheses used to encode video blocks based on the cost associated with the number of hypotheses and signaling, with a new syntax, to a decoder, the number of hypotheses used in encoding, rejecting hypotheses if the difference in value between a hypothesis and a reference hypothesis is greater than a threshold value, and/or generating the content of a sub-block that does not have reconstructed data available by combining motion-compensated prediction and luma residuals.
摘要翻译：在本公开的一个方面中，将模板匹配运动预测应用于B帧。在本公开的另一方面，应用于视频块编码的模板匹配运动预测可包括生成模板偏移，生成绝对差的加权和，基于与数量相关联的成本来选择用于对视频块进行编码的假设的数量的假设和信号通过新语法传输到解码器，编码中使用的假设的数量，如果假设和参考假设之间的值差异大于阈值，则拒绝假设，和/或生成通过组合运动补偿预测和明度残差不具有重构数据的子块。

103. 发明申请

WO2010151783A1 LOW COMPLEXITY B TO P-SLICE TRANSCODER 审中-公开
标题翻译：低复杂度B到P-SLICE TRANSCODER
公开(公告)号：WO2010151783A1
公开(公告)日：2010-12-29
申请号：PCT/US2010/040016
申请日：2010-06-25
申请人： QUALCOMM INCORPORATED , COBAN, Muhammed Z. , KARCZEWICZ, Marta , WANG, Hongqiang
发明人： COBAN, Muhammed Z. , KARCZEWICZ, Marta , WANG, Hongqiang
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/40 , H04N19/48 , H04N19/61 , H04N19/70
摘要： A system and method for transcoding compressed multimedia video is described. Particularly, a system and method for converting Bi-Predictive frame to transcoded Predictive frames, is disclosed. Present embodiments accomplish this conversion with minimal additional error, thereby providing an efficient means for maintaining video quality even after transcoding.
摘要翻译：描述了用于对压缩的多媒体视频进行代码转换的系统和方法。特别地，公开了一种用于将双预测帧转换为代码转换的预测帧的系统和方法。本实施例以最小的附加误差实现该转换，从而提供即使在转码之后也可以维持视频质量的有效手段。

104. 发明申请

WO2010039731A3 VIDEO CODING WITH LARGE MACROBLOCKS 审中-公开
标题翻译：视频编码与大型MACROBLOCKS
公开(公告)号：WO2010039731A3
公开(公告)日：2010-06-17
申请号：PCT/US2009058839
申请日：2009-09-29
申请人： QUALCOMM INC , CHEN PEISONG , YE YAN , KARCZEWICZ MARTA
发明人： CHEN PEISONG , YE YAN , KARCZEWICZ MARTA
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/103 , H04N19/147 , H04N19/176 , H04N19/46 , H04N19/61 , H04N19/70
摘要： Techniques are described for encoding and decoding digital video data using macroblocks that are larger than the macroblocks prescribed by conventional video encoding and decoding standards. For example, the techniques include encoding and decoding a video stream using macroblocks comprising greater than 16x16 pixels, for example, 64x64 pixels. Each macroblock may be partitioned into two or more partitions, and two or more of the partitions may be encoded using different modes. In one example, an apparatus includes a video encoder configured to receive a video block having a size of more than 16x16 pixels, partition the block into partitions, encode one of the partitions using a first encoding mode, encode another of the partitions using a second encoding mode different from the first encoding mode, and generate block-type syntax information that indicates the size of the block and identifies the partitions and the encoding modes used to encode the partitions.
摘要翻译：描述了使用比常规视频编码和解码标准规定的宏块大的宏块对数字视频数据进行编码和解码的技术。例如，这些技术包括使用包括大于16×16像素（例如，64×64像素）的宏块对视频流进行编码和解码。每个宏块可以被划分成两个或更多个分区，并且可以使用不同的模式对两个或更多个分区进行编码。在一个示例中，设备包括：视频编码器，被配置为接收具有大于16×16像素的大小的视频块，将块划分成分区，使用第一编码模式对所述分区中的一个编码，使用第二编码模式对另一分区进行编码编码模式不同于第一编码模式，并且生成指示块的大小并识别用于对分区进行编码的分区和编码模式的块型语法信息。

105. 发明申请

WO2010045380A2 WEIGHTED PREDICTION BASED ON VECTORIZED ENTROPY CODING 审中-公开
标题翻译：基于加权熵编码的加权预测
公开(公告)号：WO2010045380A2
公开(公告)日：2010-04-22
申请号：PCT/US2009/060707
申请日：2009-10-14
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , PANCHAL, Rahul
发明人： KARCZEWICZ, Marta , PANCHAL, Rahul
IPC分类号： H04B1/66 , H04N11/02 , H04N7/12
CPC分类号： H04N19/13 , H04N19/105 , H04N19/129 , H04N19/139 , H04N19/157 , H04N19/159 , H04N19/17 , H04N19/174 , H04N19/18 , H04N19/184 , H04N19/187 , H04N19/34 , H04N19/46 , H04N19/51
摘要： This disclosure describes methods that control the selection of predictive coding techniques for enhancement layer video blocks based on characteristics of vectorized entropy coding for such enhancement layer video blocks. In accordance with this disclosure, the predictive techniques used for predictive-based video coding of enhancement layer video blocks are dependent upon the vectorized entropy coding used for such enhancement layer the video blocks. For each coded unit, predictive coding techniques (e.g. weighted or non weighted prediction) may be selected depending upon whether the vectorized entropy coding defines a single vector for the video blocks of that coded unit or multiple vectors for the video blocks of that coded unit.
摘要翻译：本公开描述了基于用于这种增强层视频块的矢量化熵编码的特性来控制对增强层视频块的预测编码技术的选择的方法。根据本公开，用于增强层视频块的基于预测的视频编码的预测技术取决于用于这种增强层视频块的矢量化熵编码。对于每个编码单元，可以根据矢量化熵编码是否定义该编码单元的视频块的单个向量或该编码单元的视频块的多个向量来选择预测编码技术（例如加权或非加权预测）。

106. 发明申请

WO2010042518A1 EFFICIENT PREDICTION MODE SELECTION 审中-公开
标题翻译：有效的预测模式选择
公开(公告)号：WO2010042518A1
公开(公告)日：2010-04-15
申请号：PCT/US2009/059698
申请日：2009-10-06
申请人： QUALCOMM Incorporated , PANCHAL, Rahul , KARCZEWICZ, Marta
发明人： PANCHAL, Rahul , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/00024 , H04N19/105 , H04N19/109 , H04N19/142 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/19 , H04N19/46 , H04N19/523 , H04N19/573 , H04N19/577 , H04N19/61
摘要： In generally, techniques are described for efficiently selecting a prediction mode by which to predict predictive video data from reference video data. In particular, an apparatus may include a memory that stores at least a first and second reference coded unit that each includes a first and second reference video data unit, respectively. The apparatus may further comprise a motion compensation unit that performs default weighted prediction to predict a first version of a predictive video data unit from the first and second reference video data units and calculates an offset value for the first version of the predictive video data unit. The motion compensation unit may then perform, based on the calculated offset value, either implicit weighted prediction or explicit weighted prediction to predict a second version of the predictive video data unit and encode the predictive video data unit as either the first or second version.
摘要翻译：通常，描述了用于有效地选择用于从参考视频数据预测预测视频数据的预测模式的技术。特别地，装置可以包括存储器，其存储至少第一和第二参考编码单元，其分别包括第一和第二参考视频数据单元。该装置还可以包括运动补偿单元，其执行默认加权预测以从第一和第二参考视频数据单元预测预测视频数据单元的第一版本，并且计算预测图像数据单元的第一版本的偏移值。运动补偿单元然后可以基于所计算的偏移值执行隐式加权预测或显式加权预测，以预测预测视频数据单元的第二版本，并将预测视频数据单元编码为第一版本或第二版本。

107. 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。

108. 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。

109. 发明申请

WO2009126929A1 INTERPOLATION-LIKE FILTERING OF INTEGER-PIXEL POSITIONS IN VIDEO CODING 审中-公开
标题翻译：在视频编码中整数像素位置的插值式滤波
公开(公告)号：WO2009126929A1
公开(公告)日：2009-10-15
申请号：PCT/US2009/040270
申请日：2009-04-10
申请人： QUALCOMM INCORPORATED , YE, Yan , KARCZEWICZ, Marta
发明人： YE, Yan , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/523 , H04N19/117 , H04N19/122 , H04N19/147 , H04N19/182 , H04N19/192 , H04N19/46 , H04N19/51 , H04N19/635 , H04N19/82
摘要： This disclosure describes filtering techniques applied by an encoder and a decoder during the prediction stage of a video encoding and/or decoding process. The filtering techniques may enhance the accuracy of predictive data used during fractional interpolation, and may improve predictive data of integer blocks of pixels. There are several aspects to this disclosure, including a useful twelve -pixel filter support that may be used for interpolation, techniques that use coefficient symmetry and pixel symmetry to reduce the amount of data needed to be sent between an encoder and a decoder to configure the filter support for interpolation, and techniques for filtering data at integer pixel locations in a manner that is similar to sub-pixel interpolation. Other aspects of this disclosure concern techniques for encoding information in the bitstream to convey the type of filter used, and possibly the filter coefficients used. Predictive coding of filter coefficients is also described.
摘要翻译：本公开描述了在视频编码和/或解码过程的预测阶段期间由编码器和解码器应用的滤波技术。滤波技术可以增强在分数插值期间使用的预测数据的精度，并且可以改善整数像素块的预测数据。本公开有几个方面，包括可用于插值的有用的十二像素滤波器支持，使用系数对称性和像素对称性的技术来减少在编码器和解码器之间发送的数据量以配置用于内插的滤波器支持，以及以类似于子像素插值的方式在整数像素位置处对数据进行滤波的技术。本公开的其它方面涉及用于对位流中的信息进行编码以传送所使用的滤波器的类型以及可能使用的滤波器系数的技术。还描述了滤波器系数的预测编码。

110. 发明申请

WO2009126919A1 RATE-DISTORTION QUANTIZATION FOR CONTEXT-ADAPTIVE VARIABLE LENGTH CODING (CAVLC) 审中-公开
标题翻译：适应变化长度编码（CAVLC）的速率失真量化
公开(公告)号：WO2009126919A1
公开(公告)日：2009-10-15
申请号：PCT/US2009/040258
申请日：2009-04-10
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , CHEN, Peisong , YE, Yan
发明人： KARCZEWICZ, Marta , CHEN, Peisong , YE, Yan
IPC分类号： H04N7/26
CPC分类号： H04N19/124 , H04N19/126
摘要： In general, this disclosure provides techniques for quantization of the coefficients of video blocks in a manner that can achieve a desirable balance of rate and distortion. The described techniques may analyze a plurality of quantization levels associated with each individual coefficient to select the quantization level for the individual coefficients that results in a lowest coding cost. Since CAVLC does not encode each coefficient independently, the techniques may compute the coding costs for each of the candidate quantization levels associated with the individual coefficients based on quantization levels selected for previously quantized coefficients and estimated (or predicted) quantization levels for subsequent coefficients of a coefficient vector. The quantization levels for each of the coefficients are selected based on computed coding costs to obtain a set of quantized coefficients that minimize a rate-distortion model.
摘要翻译：通常，本公开提供了以可以实现速率和失真的期望平衡的方式来量化视频块的系数的技术。所描述的技术可以分析与每个单独系数相关联的多个量化级别，以选择导致最低编码成本的各个系数的量化级别。由于CAVLC不独立地对每个系数进行编码，所以这些技术可以基于针对先前量化的系数选择的量化级别和针对先前量化的系数的估计（或预测）量化级别计算与各个系数相关联的每个候选量化级别的编码成本，系数向量。基于计算的编码成本来选择每个系数的量化级别，以获得最小化速率 - 失真模型的一组量化系数。

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