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91. 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）。

92. 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。

93. 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。

94. 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。

95. 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。

96. 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。

97. 发明申请

WO2009052206A1 IMPROVED ENHANCEMENT LAYER CODING FOR SCALABLE VIDEO CODING 审中-公开
标题翻译：改进的增强层编码可扩展视频编码
公开(公告)号：WO2009052206A1
公开(公告)日：2009-04-23
申请号：PCT/US2008/080034
申请日：2008-10-15
申请人： QUALCOMM Incorporated , KARCZEWICZ, Marta , PANCHAL, Rahul , YE, Yan
发明人： KARCZEWICZ, Marta , PANCHAL, Rahul , YE, Yan
IPC分类号： H04N7/26 , H04N7/30
CPC分类号： H04N19/30 , H04N19/10 , H04N19/34 , H04N19/36 , H04N19/60 , H04N19/91
摘要： This disclosure describes scalable video coding techniques. In particular, the techniques may be used to encode refinements of a video block for enhancement layer bit streams in a single coding pass, thereby reducing coding complexity, coding delay and memory requirements. In some instances, the techniques encode each nonzero coefficient of a coefficient vector of the enhancement layer without knowledge of any subsequent coefficients. Coding the enhancement layer in a single pass may eliminate the need to perform a first pass to analyze the coefficient vector and a second pass for coding the coefficient vector based on the analysis.
摘要翻译：本公开描述了可缩放视频编码技术。特别地，这些技术可以用于在单个编码遍中对用于增强层比特流的视频块的细化进行编码，从而降低编码复杂度，编码延迟和存储器要求。在一些情况下，该技术对增强层的系数向量的每个非零系数进行编码，而不知道任何后续系数。在单程中编码增强层可以消除执行第一次通过以分析系数向量的需要，以及基于分析对系数向量进行编码的第二遍。

98. 发明申请

WO2009049248A3 LAYERED ENCODED BITSTREAM STRUCTURE 审中-公开
公开(公告)号：WO2009049248A3
公开(公告)日：2009-04-16
申请号：PCT/US2008/079634
申请日：2008-10-10
申请人： QUALCOMM Incorporated , YE, Yan , KARCZEWICZ, Marta , PANCHAL, Rahul
发明人： YE, Yan , KARCZEWICZ, Marta , PANCHAL, Rahul
IPC分类号： H04N7/26
摘要： This disclosure describes techniques for generating a layered encoded bitstream structure that exploits correlation in header information among video blocks of a coded unit of video data. A video encoder configured to operate in accordance with the techniques of this disclosure separates header information of the video blocks of a slice (or other coded unit) from the residual information of the video blocks of the slice. The video encoder run length encodes the header information of the video blocks to better exploit the correlation of the header information among the blocks of the slice. After encoding the header information of the blocks of the slice, the video encoder encodes the residual information for each of the blocks of the slice. The video encoder transmits the encoded header information as a first sequence of bits and transmits the encoded residual information as second sequence of bits.

99. 发明申请

WO2008157268A2 ADAPTIVE COEFFICIENT SCANNING IN VIDEO CODING 审中-公开
标题翻译：视频编码中的自适应系数扫描
公开(公告)号：WO2008157268A2
公开(公告)日：2008-12-24
申请号：PCT/US2008/066796
申请日：2008-06-12
申请人： QUALCOMM Incorporated , YE, Yan , KARCZEWICZ, Marta
发明人： YE, Yan , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/30 , H04N7/34 , H04N7/36
CPC分类号： H04N19/174 , H04N19/129 , H04N19/157 , H04N19/503 , H04N19/593 , H04N19/61
摘要： This disclosure describes techniques for scanning coefficients of video blocks, e.g., quantized and transformed coefficients. Rather than use conventional zig-zag scanning, the techniques of this disclosure adapt the scanning order based on statistics associated with previously coded blocks that were coded in the same prediction mode. For each prediction mode, statistics of the coefficients are stored, e.g., indicating probabilities that given coefficients are zero or non-zero. Periodically, adjustments to the scanning order can be made in order to better ensure that non-zero coefficients are grouped together and zero value coefficients are grouped together, which can improve the effectiveness of entropy coding. The techniques of this disclosure provide thresholds and threshold adjustments that can reduce the frequency that the scanning order adjustments occur, yet still achieve desired improvements in compression due to such scanning order adjustments.
摘要翻译：本公开描述了用于扫描视频块的系数的技术，例如量化和变换的系数。本公开的技术不是使用常规的之字形扫描，而是基于与以相同预测模式编码的先前编码的块相关联的统计数据来适应扫描顺序。对于每个预测模式，存储系数的统计，例如指示给定系数为零或非零的概率。可以周期性地进行扫描顺序的调整，以便更好地确保将非零系数分组在一起，将零值系数分组在一起，这可以提高熵编码的有效性。本公开的技术提供阈值和阈值调整，其可以降低扫描顺序调整发生的频率，但仍然由于这种扫描顺序调整而实现期望的压缩改进。

100. 发明申请

WO2008109621A2 COMBINED RUN-LENGTH CODING OF REFINEMENT AND SIGNIFICANT COEFFICIENTS IN SCALABLE VIDEO CODING ENHANCEMENT LAYERS 审中-公开
标题翻译：可扩展视频编码增强层中的精炼和重要系数的组合运行长度编码
公开(公告)号：WO2008109621A2
公开(公告)日：2008-09-12
申请号：PCT/US2008/055830
申请日：2008-03-04
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta
发明人： KARCZEWICZ, Marta
CPC分类号： H04N19/36 , H04N19/13 , H04N19/157 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/31 , H04N19/33 , H04N19/34 , H04N19/61
摘要： This disclosure describes techniques for coding an enhancement layer in a scalable video coding (SVC) scheme. The techniques involve run-length coding of significant coefficients and refinement coefficients of the enhancement layer. Rather than performing two different run-length passes to separately code the significant coefficients and refinement coefficients, the techniques of this disclosure perform run-length coding of the significant coefficients and refinement coefficients together. Therefore, run values of the run-length coding codes the significant coefficients with the refinement coefficients. Additional techniques are also described, which can eliminate the need to send sign information for some of the refinement coefficients. Instead, this sign information for some of the refinement coefficients may be derived at the decoder based on the sign values of corresponding coefficients of previously encoded layers of the SVC scheme, which can further improve compression efficiency.
摘要翻译：本公开描述了用于在可缩放视频编码（SVC）方案中对增强层进行编码的技术。这些技术涉及增强层的有效系数和细化系数的游程长度编码。本公开的技术不是执行两个不同的游程长度传递来分别编码有效系数和细化系数，而是一起执行有效系数和细化系数的游程长度编码。因此，运行长度编码的值用精细系数代码有效系数。还描述了附加技术，其可以消除对一些细化系数发送符号信息的需要。相反，可以在解码器基于SVC方案的先前编码层的对应系数的符号值导出一些细化系数的该符号信息，这可以进一步提高压缩效率。

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