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1. 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。

2. 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。

3. 发明申请

WO2011006003A1 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：WO2011006003A1
公开(公告)日：2011-01-13
申请号：PCT/US2010/041422
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： H04N7/46 , H04N7/50
CPC分类号： H04N19/577
摘要： In one 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，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。

4. 发明申请

WO2011005268A2 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：WO2011005268A2
公开(公告)日：2011-01-13
申请号：PCT/US2009/050334
申请日：2009-07-10
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , CHEN, Peisong , YE, Yan
发明人： KARCZEWICZ, Marta , CHEN, Peisong , YE, Yan
IPC分类号： H04N7/46 , H04N7/50
CPC分类号： H04N19/577

5. 发明申请

WO2010039729A2 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：WO2010039729A2
公开(公告)日：2010-04-08
申请号：PCT/US2009/058836
申请日：2009-09-29
申请人： QUALCOMM Incorporated , CHEN, Peisong , YE, Yan , KARCZEWICZ, Marta
发明人： CHEN, Peisong , YE, Yan , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/30 , 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. In one example, an apparatus includes a video encoder configured to receive a video coding unit, determine a first rate-distortion metric for encoding the video coding unit using first video blocks with sizes of 16x16 pixels, determine a second rate-distortion metric for encoding the video coding unit using second video blocks with sizes of more than 16x16 pixels, encode the video coding unit using the first video blocks when the first rate-distortion metric is less than second rate-distortion metric, and encode the video coding unit using the second video blocks when the second rate-distortion metric is less than the first rate-distortion metric.
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。在一个示例中，一种装置包括视频编码器，其被配置为接收视频编码单元，使用尺寸为16×16像素的第一视频块确定用于对视频编码单元进行编码的第一速率 - 失真度量，确定用于编码的第二速率 - 失真度量使用尺寸大于16×16像素的第二视频块的视频编码单元，当第一速率 - 失真度量小于第二速率失真度量时，使用第一视频块对视频编码单元进行编码，并且使用当第二速率 - 失真度量小于第一速率 - 失真度量时，第二视频块。

6. 发明申请

WO2010039288A1 DIGITAL VIDEO CODING WITH INTERPOLATION FILTERS AND OFFSETS 审中-公开
标题翻译：数字视频编码与插值滤波器和偏移
公开(公告)号：WO2010039288A1
公开(公告)日：2010-04-08
申请号：PCT/US2009/043391
申请日：2009-05-08
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , MOTTA, Giovanni , YE, Yan , CHEN, Peisong
发明人： KARCZEWICZ, Marta , MOTTA, Giovanni , YE, Yan , CHEN, Peisong
IPC分类号： H04N7/26
CPC分类号： H04N19/577 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/19 , H04N19/192 , H04N19/523 , H04N19/59 , H04N19/61 , H04N19/82
摘要： This disclosure describes techniques for encoding digital video data using interpolation filters and offsets. An encoder may be configured to select interpolation filters for sub-pixel precision motion estimation based on historical interpolation results obtained for previously encoded video units, such as frames or slices. The encoder also may be configured to compute and assign offsets to the sub-pixel positions after interpolation based on differences between a reference unit and the unit to be coded. The computation and assignment of offsets may be performed before motion estimation. Motion estimation may be refined so that the motion search considers sub-pixel positions to which offsets have been previously added and evaluates sub-pixel positions that have a non-zero offset. In some cases, interpolation filter selection, offset computation, and/or refined motion estimation for a given unit may be performed in a single encoding pass.
摘要翻译：本公开描述了使用内插滤波器和偏移量对数字视频数据进行编码的技术。编码器可以被配置为基于针对先前编码的视频单元（诸如帧或片）获得的历史插值结果来选择子像素精度运动估计的内插滤波器。编码器还可以被配置为基于参考单元和要编码的单元之间的差异来计算和分配插补之后的子像素位置的偏移。可以在运动估计之前执行偏移的计算和分配。可以改进运动估计，使得运动搜索考虑先前已经添加了偏移的子像素位置，并评估具有非零偏移的子像素位置。在一些情况下，可以在单个编码过程中执行用于给定单元的内插滤波器选择，偏移计算和/或精细运动估计。

7. 发明申请

WO2009105726A1 TWO PASS QUANTIZATION FOR CABAC CODERS 审中-公开
标题翻译： CABAC编码器的两次通过量化
公开(公告)号：WO2009105726A1
公开(公告)日：2009-08-27
申请号：PCT/US2009/034793
申请日：2009-02-20
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： H04N19/132 , H04N19/124 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/91
摘要： This disclosure describes techniques for quantizing coefficients of a video block for a video coding process that supports context-based adaptive binary arithmetic coding (CABAC). A method may comprise estimating a last non-zero coefficient of the video block, and generating a set of quantized coefficients for the video block based on an assumption that the estimated last non-zero coefficient is actually the last non-zero coefficient of the video block.
摘要翻译：本公开描述了用于量化用于支持基于上下文的自适应二进制算术编码（CABAC）的视频编码处理的视频块的系数的技术。一种方法可以包括估计视频块的最后非零系数，并且基于估计的最后非零系数实际上是视频的最后非零系数的假设来生成视频块的一组量化系数块。

8. 发明申请

WO2009126936A1 ADVANCED INTERPOLATION TECHNIQUES FOR MOTION COMPENSATION IN VIDEO CODING 审中-公开
标题翻译：视频编码中运动补偿的高级插值技术
公开(公告)号：WO2009126936A1
公开(公告)日：2009-10-15
申请号：PCT/US2009/040278
申请日：2009-04-10
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , YE, Yan , CHEN, Peisong
发明人： KARCZEWICZ, Marta , YE, Yan , CHEN, Peisong
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N19/523 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/182 , H04N19/192 , H04N19/70 , H04N19/82
摘要： This disclosure describes various interpolation techniques performed by an encoder and a decoder during the motion compensation process of video coding. In one example, an encoder interpolates pixel values of reference video data based on a plurality of different pre defined interpolation filters. In this example, the decoder receives a syntax element that identifies an interpolation filter, and interpolates pixel values of reference video data based on the interpolation filter identified by the syntax element. In another example, a method of interpolating predictive video data includes generating half-pixel values based on integer pixel values, rounding the half-pixel values to generate half-pixel interpolated values, storing the half-pixel values as non-rounded versions of the half-pixel values, and generating quarter-pixel values based on the non-rounded versions of the half-pixel values and the integer pixel values.
摘要翻译：本公开描述了在视频编码的运动补偿处理期间由编码器和解码器执行的各种插值技术。在一个示例中，编码器基于多个不同的预先定义的内插滤波器来内插参考视频数据的像素值。在该示例中，解码器接收识别内插滤波器的语法元素，并且基于由语法元素识别的内插滤波器来内插参考视频数据的像素值。在另一实例中，一种内插预测性视频数据的方法包含基于整数像素值产生半像素值，将所述半像素值舍入以产生半像素内插值，将所述半像素值存储为所述半像素值，并且基于半像素值和整数像素值的未舍入版本来生成四分之一像素值。

9. 发明申请

WO2009126924A1 INTERPOLATION FILTER SUPPORT FOR SUB-PIXEL RESOLUTION IN VIDEO CODING 审中-公开
标题翻译：内插滤波器支持视频编码中的子像素分辨率
公开(公告)号：WO2009126924A1
公开(公告)日：2009-10-15
申请号：PCT/US2009/040263
申请日：2009-04-10
申请人： QUALCOMM INCORPORATED , YE, Yan , CHEN, Peisong , KARCZEWICZ, Marta
发明人： YE, Yan , CHEN, Peisong , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N7/364 , H04N7/014 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/182 , H04N19/192 , H04N19/463 , H04N19/523
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。本公开的方面有几个方面，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来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。

10. 发明申请

WO2010039822A3 VIDEO CODING USING TRANSFORMS BIGGER THAN 4x4 AND 8x8 审中-公开
公开(公告)号：WO2010039822A3
公开(公告)日：2010-04-08
申请号：PCT/US2009/059014
申请日：2009-09-30
申请人： QUALCOMM INCORPORATED , YE, Yan , CHEN, Peisong , KARCZEWICZ, Marta
发明人： YE, Yan , CHEN, Peisong , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50
摘要： In a video processing system, a method and system for applying transforms larger than 8x8 and non-rectangular transforms, and generating transform size syntax elements indicative of the transforms for video decoding are provided. The transform size syntax element may be generated by an encoder based on a prediction block size of a video block and the contents of the video block. Further, the transform size syntax element may be generated according to a set of rules to select from 4x4, 8x8, and larger transform sizes during an encoding process. A decoder may perform an inverse transform based on the transform size syntax element and the rules used by the encoder. The transform size syntax element may be transmitted to the decoder as part of the encoded video bitstream.

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