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1. 发明申请

WO2012078748A1 ADAPTIVE SUPPORT FOR INTERPOLATING VALUES OF SUB-PIXELS FOR VIDEO CODING 审中-公开
标题翻译：用于插入视频编码的子像素值的自适应支持
公开(公告)号：WO2012078748A1
公开(公告)日：2012-06-14
申请号：PCT/US2011/063730
申请日：2011-12-07
申请人： QUALCOMM INCORPORATED , PANCHAL, Rahul, P. , KARCZEWICZ, Marta , CHEN, Peisong
发明人： PANCHAL, Rahul, P. , KARCZEWICZ, Marta , CHEN, Peisong
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N19/523 , H04N19/117 , H04N19/154 , H04N19/182 , H04N19/80
摘要： This disclosure describes techniques for calculating values of sub-integer pixels applied by an encoder and a decoder to encode blocks of video data. In one example, a video encoder is configured to receive values for a full integer pixel positions of a reference sample, apply an interpolation filter to a first set of the values for the full integer pixel positions to calculate a value for a first sub-integer pixel of one of the full integer pixel positions, apply the interpolation filter to a second, different set of the values for the full integer pixel positions to calculate a value for a second, different sub- integer pixel of the one of the full integer pixel positions, encode a current block of pixels using a motion vector that points to one of the first sub-integer pixel and the second sub-integer pixel.
摘要翻译：本公开描述了用于计算由编码器和解码器应用的子整数像素的值以编码视频数据块的技术。在一个示例中，视频编码器被配置为接收参考样本的整个整数像素位置的值，将内插滤波器应用于全整数像素位置的值的第一组，以计算第一子整数的值将全部整数像素位置之一的像素应用于完整整数像素位置的第二个不同的值组，以计算整数像素之一的第二个不同的子整数像素的值位置，使用指向第一子整数像素和第二子整数像素之一的运动矢量对当前像素块进行编码。

2. 发明申请

WO2010135609A1 ADAPTIVE PICTURE TYPE DECISION FOR VIDEO CODING 审中-公开
标题翻译：适应性影像类型决定视频编码
公开(公告)号：WO2010135609A1
公开(公告)日：2010-11-25
申请号：PCT/US2010/035692
申请日：2010-05-20
申请人： QUALCOMM INCORPORATED , PANCHAL, Rahul P. , KARCZEWICZ, Marta
发明人： PANCHAL, Rahul P. , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/50 , H04N7/46
CPC分类号： H04N19/577 , H04N19/109 , H04N19/114 , H04N19/137 , H04N19/142 , H04N19/172 , H04N19/177 , H04N19/61
摘要： A video encoding apparatus determines whether to encode a key frame of a group of pictures using a bi-directional prediction mode. In one example, a video encoding apparatus includes a mode select unit configured to generate a virtual key frame for a current group of pictures based on a previous key frame of a previous group of pictures and a next key frame of a next group of pictures, calculate an error value representing error between a current key frame of the current group of pictures and the virtual key frame, and determine whether the error value exceeds a threshold value, and a video encoder configured to encode the current key frame using a bi-directional prediction encoding mode when the error value does not exceed the threshold value. The video encoder may comprise the mode select unit, or a preprocessing unit of the apparatus may comprise the mode select unit.
摘要翻译：视频编码装置使用双向预测模式来确定是否对一组图像的关键帧进行编码。在一个示例中，视频编码装置包括：模式选择单元，被配置为基于先前的图像组的先前关键帧和下一组图像的下一个关键帧生成当前图像组的虚拟关键帧，计算表示当前图像组的当前关键帧与虚拟关键帧之间的误差的误差值，并确定误差值是否超过阈值，以及视频编码器，被配置为使用双向当错误值不超过阈值时的预测编码模式。视频编码器可以包括模式选择单元，或者该装置的预处理单元可以包括模式选择单元。

3. 发明申请

WO2010120928A1 EFFICIENT TRANSCODING OF B-FRAMES TO P-FRAMES 审中-公开
标题翻译： B框架对P框架的有效转移
公开(公告)号：WO2010120928A1
公开(公告)日：2010-10-21
申请号：PCT/US2010/031094
申请日：2010-04-14
申请人： QUALCOMM INCORPORATED , COBAN, Muhammed, Z. , KARCZEWICZ, Marta , PANCHAL, Rahul, P. , OGUZ, Seyfullah, H. , ROHATGI, Amit
发明人： COBAN, Muhammed, Z. , KARCZEWICZ, Marta , PANCHAL, Rahul, P. , OGUZ, Seyfullah, H. , ROHATGI, Amit
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/40 , H04N19/124 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/48 , H04N19/61 , H04N19/619
摘要： This disclosure describes techniques for efficient transcoding from a first format that supports I-units, P-units and B-units to a second format that supports I-units and P-units but does not support the B-units. In particular, this disclosure provides techniques for converting B-frames or B-slices of the first format into P-frames or P-slices of the second format. The techniques avoid the need to decode and re-encode that frames or slices. Instead, residuals associated with the B-video blocks in the first format are augmented and made to be dependent upon only one of the two lists associated with the B-video blocks so that such B video blocks in the first format can be redefined as P video blocks in the second format.
摘要翻译：本公开描述了用于从支持I单元，P单元和B单元的第一格式有效地转码为支持I单元和P单元但不支持B单元的第二格式的技术。特别地，本公开提供了用于将第一格式的B帧或B片转换成第二格式的P帧或P片的技术。这些技术避免了对该帧或片段进行解码和重新编码的需要。相反，与第一格式的B视频块相关联的残差被增加，并且仅依赖于与B视频块相关联的两个列表中的一个，使得第一格式的这样的B视频块可以被重新定义为P 第二格式的视频块。

4. 发明申请

WO2011005267A1 DIFFERENT WEIGHTS FOR UNI-DIRECTIONAL PREDICTION AND BI-DIRECTIONAL PREDICTION IN VIDEO CODING 审中-公开
标题翻译：用于在视频编码中进行单向预测和双向预测的不同权重
公开(公告)号：WO2011005267A1
公开(公告)日：2011-01-13
申请号：PCT/US2009/050332
申请日：2009-07-10
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , PANCHAL, Rahul, P.
发明人： KARCZEWICZ, Marta , PANCHAL, Rahul, P.
IPC分类号： H04N7/26 , H04N7/46 , H04N7/36
CPC分类号： H04N19/137 , H04N19/105 , H04N19/147 , H04N19/172 , H04N19/19 , H04N19/46 , H04N19/51 , H04N19/573 , H04N19/577 , H04N19/61
摘要： In one aspect of this disclosure, techniques are described for the decoupling of uni directional and bi-directional prediction weights, particularly for explicit weighted predictions of video blocks within a B-unit. According to this disclosure, explicit weights communicated in the bitstream may be applied by a decoder for explicit bi-directional prediction, but different weights (which may be default weights or separately defined explicit uni-directional weights) may be used for explicit uni-directional prediction. The described techniques may improve video quality relative to techniques that use the same explicit weights for explicit bi-directional prediction and explicit uni-directional prediction within a B-unit.
摘要翻译：在本公开的一个方面，描述了用于解耦单向和双向预测权重的技术，特别是用于B单元内的视频块的显式加权预测。根据本公开，在比特流中传送的显式权重可以由解码器应用于显式双向预测，但是可以使用不同的权重（其可以是默认权重或单独定义的显式单向权重）用于显式单向预测。所描述的技术可以相对于在B单元中使用相同显式权重用于显式双向预测和显式单向预测的技术来改善视频质量。

5. 发明申请

WO2012044925A1 SELECTIVE INDICATION OF TRANSFORM SIZES 审中-公开
标题翻译：变压器尺寸的选择指标
公开(公告)号：WO2012044925A1
公开(公告)日：2012-04-05
申请号：PCT/US2011/054210
申请日：2011-09-30
申请人： QUALCOMM INCORPORATED , CHEN, Peisong , KARCZEWICZ, Marta , PANCHAL, Rahul, P.
发明人： CHEN, Peisong , KARCZEWICZ, Marta , PANCHAL, Rahul, P.
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50
CPC分类号： H04N19/96 , H04N19/119 , H04N19/122 , H04N19/61 , H04N19/70
摘要： During a video encoding process, a video encoder may transform the residual data of a coding unit (CU) using a single transform if the CU only has a single prediction unit (PU). If the CU has multiple PUs, the video encoder may transform the residual data using multiple transforms. The video encoder outputs an indication of the size of a transform used to transform residual data of the CU only when the CU has more than one PU. If a video decoder receives such an indication, the video decoder may reconstruct residual data of the CU using a transform of the indicated size. Otherwise, the video decoder may reconstruct the residual data of the CU using a transform having same size as the CU.
摘要翻译：在视频编码处理期间，如果CU仅具有单个预测单元（PU），则视频编码器可以使用单个变换来变换编码单元（CU）的残差数据。如果CU具有多个PU，则视频编码器可以使用多个变换来变换残差数据。视频编码器仅在CU具有多于一个PU时输出用于变换CU的残留数据的变换大小的指示。如果视频解码器接收到这样的指示，则视频解码器可以使用所指示的大小的变换来重建CU的残留数据。否则，视频解码器可以使用具有与CU相同大小的变换来重构CU的残留数据。

6. 发明申请

WO2011103482A1 BLOCK TYPE SIGNALLING IN VIDEO CODING 审中-公开
标题翻译：块视频编码中的块类型信号
公开(公告)号：WO2011103482A1
公开(公告)日：2011-08-25
申请号：PCT/US2011/025506
申请日：2011-02-18
申请人： QUALCOMM INCORPORATED , PANCHAL, Rahul P. , KARCZEWICZ, Marta
发明人： PANCHAL, Rahul P. , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/36 , H04N7/46
CPC分类号： H04N19/577 , H04N19/109 , H04N19/147 , H04N19/70
摘要： In one example, this disclosure describes video encoding and decoding techniques applicable to bi-directional prediction. For signaling from an encoder to a decoder a block type for a video block, an encoder can transmit to the decoder two or more separate syntax elements, where one of the two or more separate syntax elements identifies a partition size for the video block and another of the two or more separate syntax elements identifies a prediction direction for a partition of the video block. The separate syntax elements can be individually encoded and transmitted from the encoder to the decoder.
摘要翻译：在一个示例中，本公开描述了适用于双向预测的视频编码和解码技术。为了从编码器向解码器发送用于视频块的块类型，编码器可以向解码器发送两个或多个单独的语法元素，其中两个或更多个分离的语法元素中的一个标识了视频块的分区大小和另一个两个或多个单独的语法元素识别视频块的分区的预测方向。单独的语法元素可以被单独编码并从编码器发送到解码器。

7. 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）。

8. 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。

9. 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。

10. 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.

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