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31. 发明申请

WO2012075193A1 CODING THE POSITION OF A LAST SIGNIFICANT COEFFICIENT WITHIN A VIDEO BLOCK BASED ON A SCANNING ORDER FOR THE BLOCK IN VIDEO CODING 审中-公开
标题翻译：根据视频编码中的块的扫描顺序编码视频块中的最后一个重要系数的位置
公开(公告)号：WO2012075193A1
公开(公告)日：2012-06-07
申请号：PCT/US2011/062715
申请日：2011-11-30
申请人： QUALCOMM Incorporated , SOLE ROJALS, Joel , COBAN, Muhammed Zeyd , ZHENG, Yunfei , JOSHI, Rajan L. , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , COBAN, Muhammed Zeyd , ZHENG, Yunfei , JOSHI, Rajan L. , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50 , H03M7/40
CPC分类号： H04N19/13 , H03M7/30 , H03M7/40 , H03M7/4018 , H03M7/6035 , H04N19/176 , H04N19/436 , H04N19/61 , H04N19/70 , H04N19/91
摘要： In one example, an apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, wherein the apparatus includes a video coder configured to code x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to a scanning order associated with the block when the scanning order comprises a first scanning order, and code interchanged x- and y-coordinates that indicate the position of the last non-zero coefficient within the block according to the scanning order when the scanning order comprises a second scanning order, wherein the second scanning order is different than the first scanning order.
摘要翻译：在一个示例中，公开了一种用于在视频编码过程期间对与视频数据块相关联的系数进行编码的装置，其中所述装置包括视频编码器，其被配置为编码指示最后非零位置的x坐标和y坐标当扫描顺序包括第一扫描顺序时，根据与块相关联的扫描顺序，块内的系数，以及根据扫描指示块内的最后非零系数的位置的代码交换的x和y坐标当扫描顺序包括第二扫描顺序时，其中第二扫描顺序不同于第一扫描顺序。

32. 发明申请

WO2012068021A1 PARALLEL CONTEXT CALCULATION IN VIDEO CODING 审中-公开
标题翻译：并行计算在视频编码
公开(公告)号：WO2012068021A1
公开(公告)日：2012-05-24
申请号：PCT/US2011/060619
申请日：2011-11-14
申请人： QUALCOMM Incorporated , COBAN, Muhammed Zeyd , ZHENG, Yunfei , SOLE ROJALS, Joel , JOSHI, Rajan L. , KARCZEWICZ, Marta
发明人： COBAN, Muhammed Zeyd , ZHENG, Yunfei , SOLE ROJALS, Joel , JOSHI, Rajan L. , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/436 , H04N19/102 , H04N19/129 , H04N19/13 , H04N19/134 , H04N19/176 , H04N19/18 , H04N19/196 , H04N19/463
摘要： In one example, a method for coding video data includes identifying a scan path for scanning significance information associated with a quantized transform coefficient. The method also includes determining a context support neighborhood for entropy coding the significance information associated with the quantized transform coefficient, wherein the context support neighborhood excludes one or more context support elements that are located in the scan path. The method also includes coding the significance information using the modified context support neighborhood.
摘要翻译：在一个示例中，用于编码视频数据的方法包括识别用于扫描与量化变换系数相关联的有效信息的扫描路径。该方法还包括确定用于熵编码与量化变换系数相关联的重要性信息的上下文支持邻域，其中上下文支持邻域排除位于扫描路径中的一个或多个上下文支持元素。该方法还包括使用修改的上下文支持邻域对重要性信息进行编码。

33. 发明申请

WO2012045037A2 ZERO-OUT OF HIGH FREQUENCY COEFFICIENTS AND ENTROPY CODING RETAINED COEFFICIENTS USING A JOINT CONTEXT MODEL 审中-公开
标题翻译：使用联合语境模型对高频系数和熵编码保留系数进行归零
公开(公告)号：WO2012045037A2
公开(公告)日：2012-04-05
申请号：PCT/US2011/054418
申请日：2011-09-30
申请人： QUALCOMM INCORPORATED , SOLE ROJALS, Joel , JOSHI, Rajan, L. , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , JOSHI, Rajan, L. , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/13 , H04N19/132 , H04N19/14 , H04N19/146 , H04N19/149 , H04N19/176 , H04N19/18 , H04N19/60 , H04N19/625 , H04N19/64 , H04N19/91
摘要： This disclosure describes techniques for performing entropy encoding and decoding of video coefficients using a joint context model shared between transform units having different sizes. For example, the joint context model may be shared between transform units having a first size of 32x32 and transform units having a second size of 16x16. Performing entropy coding using a joint context model shared between transform units having different sizes may reduce an amount of memory necessary to store contexts and probabilities, and reduce computational costs of maintaining context models. In one example, the joint context model may be shared between transform units having the first size with coefficients zeroed out to generate a retained coefficient block having the second size and transform units having the second size. In another example, the joint context model may be shared between transform units having the first size and transform units having the second size.
摘要翻译：本公开描述了使用在具有不同大小的变换单元之间共享的联合上下文模型来执行视频系数的熵编码和解码的技术。例如，联合上下文模型可以在第一大小为32×32的变换单元和具有第二大小为16×16的变换单元之间共享。使用具有不同大小的变换单元之间共享的联合上下文模型执行熵编码可以减少存储上下文和概率所需的存储量，并且减少维护上下文模型的计算成本。在一个示例中，联合上下文模型可以在具有第一尺寸的系数被清零以产生具有第二尺寸的保留系数块和具有第二尺寸的变换单元之间的变换单元之间共享。在另一示例中，联合上下文模型可以在具有第一尺寸的变换单元和具有第二尺寸的变换单元之间共享。

34. 发明申请

WO2012009566A2 ENTROPY CODING OF BINS ACROSS BIN GROUPS USING VARIABLE LENGTH CODEWORDS 审中-公开
标题翻译：使用可变长度编码器对BIN组进行熵编码
公开(公告)号：WO2012009566A2
公开(公告)日：2012-01-19
申请号：PCT/US2011/044060
申请日：2011-07-14
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , JOSHI, Rajan, L.
发明人： KARCZEWICZ, Marta , JOSHI, Rajan, L.
IPC分类号： H04N7/26
CPC分类号： H03M7/40 , H04N19/13
摘要： This disclosure describes techniques for entropy coding bins representing video data symbols with reduced bottlenecks in the entropy coding process. The techniques of this disclosure enable an entropy coding device to perform entropy coding of bins grouped into bin subsets from across different bin groups, e.g., context groups or probability groups, using variable length codewords. In one example, the bins may be assigned to context groups with no context dependencies between the context groups. In another example, the bins may be assigned to probability groups associated with different intervals of probability states. The bins may be grouped into the bin subsets according to determined formations of the bin subsets. In this way, the entropy coding device may reduce an amount of bin and codeword buffering by efficiently forming the bin subsets and designing variable length codewords for each of the bin subsets.
摘要翻译：本公开描述了用于熵编码表示具有熵编码处理中的瓶颈的视频数据符号的盒的技术。本公开的技术使得熵编码设备能够使用可变长度码字来对来自跨不同的存储体组（例如，上下文组或概率组）的bin子集进行熵编码。在一个示例中，可以将这些分配给上下文组，而上下文组之间没有上下文依赖性。在另一个示例中，可以将该箱分配给与不同的概率状态间隔相关联的概率组。根据箱子子集的确定的形式，箱可以被分组到箱子子集中。以这种方式，熵编码装置可以通过有效地形成bin子集并且为每个bin子集设计可变长度码字来减少bin和码字缓冲量。

35. 发明申请

WO2011163629A1 INCLUSION OF SWITCHED INTERPOLATION FILTER COEFFICIENTS IN A COMPRESSED BIT-STREAM 审中-公开
标题翻译：在压缩比特流中的开关插入滤波器系数的包含
公开(公告)号：WO2011163629A1
公开(公告)日：2011-12-29
申请号：PCT/US2011/041892
申请日：2011-06-24
申请人： QUALCOMM INCORPORATED , JOSHI, Rajan, L. , KARCZEWICZ, Marta , PANCHAL, Rahul, P.
发明人： JOSHI, Rajan, L. , KARCZEWICZ, Marta , PANCHAL, Rahul, P.
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/523 , H04N19/117 , H04N19/172 , H04N19/176 , H04N19/70 , H04N19/82
摘要： In one example, an encoder may apply a plurality of pre-defined interpolation filters to units of video data, such as frames of reference video, in order to generate a plurality of different interpolated prediction data. The encoder may also at times determine that a new interpolation filter or set of interpolation filters might improve coding quality by either improving video compression or improving reconstructed image quality. The encoder may also signal to a video decoder whether one of the pre-defined interpolation filters was used or a new set of interpolation filters was used. The encoder may also signal to a video decoder whether to continue using the new set of interpolation filters, or whether to revert back to using the pre-defined set of interpolation filters. A video decoder can decode video data based on data received from the video encoder.
摘要翻译：在一个示例中，编码器可以将多个预定义的内插滤波器应用于诸如参考视频帧的视频数据的单元，以便生成多个不同的内插预测数据。编码器还可以有时确定新的内插滤波器或内插滤波器组可以通过改进视频压缩或改善重建的图像质量来提高编码质量。编码器还可以向视频解码器发信号通知是否使用了预定义的内插滤波器之一或使用了一组新的内插滤波器。编码器还可以向视频解码器发信号通知是否继续使用新的内插滤波器组，或者是否还原回使用预定义的内插滤波器组。视频解码器可以基于从视频编码器接收的数据来解码视频数据。

36. 发明申请

WO2019178721A1 IMPROVEMENTS TO ADVANCED TEMPORAL MOTION VECTOR PREDICTION 审中-公开
公开(公告)号：WO2019178721A1
公开(公告)日：2019-09-26
申请号：PCT/CN2018/079458
申请日：2018-03-19
申请人： QUALCOMM INCORPORATED , HAN, Yu , ZHANG, Kai , ZHANG, Li , CHIEN, Wei-Jung , KARCZEWICZ, Marta
发明人： HAN, Yu , ZHANG, Kai , ZHANG, Li , CHIEN, Wei-Jung , KARCZEWICZ, Marta
IPC分类号： H04N19/51
摘要： Methods and devices for decoding including a processor configured to determine which picture is a collocated picture, and determine a location of an associated block of the video data in the collocated picture that corresponds to the current block of video data in the current coding picture, based on using previously decoded blocks in the current coding picture to find an initial motion vector between the associated block in the collocated picture and the current block in the current coding picture, where the associated block of the video data includes at least one first derived motion vector. The processor configured to determine at least one second derived motion vector associated with the current block in the current coding picture, when the initial motion vector points to the collocated picture, based on the at least on first derived motion vector associated with the associated block in the collocated picture.

37. 发明申请

WO2013003741A1 VLC COEFFICIENT CODING FOR LUMA AND CHROMA BLOCK 审中-公开
标题翻译：用于LUMA和CHROMA块的VLC系数编码
公开(公告)号：WO2013003741A1
公开(公告)日：2013-01-03
申请号：PCT/US2012/044976
申请日：2012-06-29
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , WANG, Xianglin , CHIEN, Wei-Jung , GUO, Liwei
发明人： KARCZEWICZ, Marta , WANG, Xianglin , CHIEN, Wei-Jung , GUO, Liwei
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50 , H03M7/30
CPC分类号： H04N19/91 , H04N19/13 , H04N19/176 , H04N19/186 , H04N19/60 , H04N19/61
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. According to these techniques, a video coder (a video encoder or video decoder) determines whether a block of video data is a luma block or a chroma block. If the block of video data is a luma block, the video coder adaptively updates a VLC table index value based on a code number cn and value of a scaling factor. However, if the block of video data is a chroma block, the video coder adaptively updates the VLC table index value based on the code number cn and without using the scaling factor. The video coder uses the updated VLC table index value to select a VLC table of a plurality of VLC tables that are used to encode or decode the block of video data.
摘要翻译：本公开描述了用于对视频数据块的变换系数进行编码的技术。根据这些技术，视频编码器（视频编码器或视频解码器）确定视频数据块是亮度块还是色度块。如果视频数据块是亮度块，则视频编码器基于码数cn和缩放因子的值自适应地更新VLC表索引值。然而，如果视频数据块是色度块，则视频编码器基于码数cn自适应地更新VLC表索引值，而不使用缩放因子。视频编码器使用更新的VLC表索引值来选择用于对视频数据块进行编码或解码的多个VLC表的VLC表。

38. 发明申请

WO2013003581A1 CODING OF LAST SIGNIFICANT TRANSFORM COEFFICIENT 审中-公开
标题翻译：最新重要变换系数的编码
公开(公告)号：WO2013003581A1
公开(公告)日：2013-01-03
申请号：PCT/US2012/044629
申请日：2012-06-28
申请人： QUALCOMM INCORPORATED , SOLE ROJALS, Joel , CHIEN, Wei-Jung , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , CHIEN, Wei-Jung , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/13 , H04N19/129 , H04N19/196 , H04N19/44 , H04N19/463 , H04N19/91
摘要： A video encoder determines that the last significant coefficient (LSC) of a transform coefficient block occurs at a given ordinal position according to a coding scanning order. The video encoder generates a coordinate indicator that specifies the coordinates of a given transform coefficient in the transform coefficient block. The given transform coefficient occurs at the same ordinal position according to an assumed scanning order. A video decoder receives the coordinate indicator and converts the coordinate indicator into a scan-based LSC indicator. The scan-based LSC indicator indicates the ordinal position of the LSC.
摘要翻译：视频编码器根据编码扫描顺序确定变换系数块的最后有效系数（LSC）发生在给定的顺序位置处。视频编码器生成指定变换系数块中的给定变换系数的坐标的坐标指示符。给定的变换系数根据假定的扫描顺序发生在相同的序数位置。视频解码器接收坐标指示符并将坐标指示符转换为基于扫描的LSC指示符。基于扫描的LSC指示符表示LSC的顺序位置。

39. 发明申请

WO2012170812A1 ENHANCED INTRA-PREDICTION MODE SIGNALING FOR VIDEO CODING USING NEIGHBORING MODE 审中-公开
标题翻译：使用相邻模式进行视频编码的增强型预测模式信号
公开(公告)号：WO2012170812A1
公开(公告)日：2012-12-13
申请号：PCT/US2012/041545
申请日：2012-06-08
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 , H04N7/34
CPC分类号： H04N19/593 , H04N19/11 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463
摘要： This disclosure describes techniques for intra-prediction mode signaling for video coding. In one example, a video coder is configured to determine, for a block of video data, a set of most probable intra-prediction modes such that the set of most probable intraprediction modes has a size that is equal to a predetermined number that is greater than or equal to two. The video coder is also configured to code a value representative of an actual intra-prediction mode for the block based at least in part on the set of most probable intraprediction modes and code the block using the actual intra-prediction mode. The video coder may further be configured to code the block using the actual intra-prediction mode, e.g., to encode or decode the block. Video encoders and video decoders may implement these techniques.
摘要翻译：本公开描述了用于视频编码的帧内预测模式信令的技术。在一个示例中，视频编码器被配置为针对视频数据块确定最可能的帧内预测模式的集合，使得最可能的预测模式的集合具有等于大于预定数量的大小大于或等于2。视频编码器还被配置为至少部分地基于最可能的预测模式的集合来编码表示块的实际帧内预测模式的值，并且使用实际帧内预测模式对块进行编码。视频编码器还可以被配置为使用实际的帧内预测模式对块进行编码，例如对块进行编码或解码。视频编码器和视频解码器可以实现这些技术。

40. 发明申请

WO2012167119A1 INTRA PREDICTION MODE CODING WITH DIRECTIONAL PARTITIONS 审中-公开
标题翻译：内部预测模式编码与方向分区
公开(公告)号：WO2012167119A1
公开(公告)日：2012-12-06
申请号：PCT/US2012/040510
申请日：2012-06-01
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , ZHENG, Yunfei , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , ZHENG, Yunfei , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/34
CPC分类号： H04N19/11 , H04N19/176 , H04N19/46 , H04N19/593
摘要： A video coder can determine a most probable mode for a block of video data using non-square partitions based on the direction of the non-square partitions. When the direction of the non-square partitions is vertical, an intra prediction mode of a left-neighboring block can be selected as the most probable intra prediction mode, and when the direction of the non-square partitions is horizontal, an intra prediction mode of an above-neighboring block can be selected as the most probable intra prediction mode.
摘要翻译：视频编码器可以基于非正方形分区的方向，使用非正方形分区来确定视频数据块的最可能模式。当非正方形分区的方向是垂直方向时，可以选择左相邻块的帧内预测模式作为最可能的帧内预测模式，并且当非正方形分区的方向是水平时，帧内预测模式可以选择上述相邻块作为最可能的帧内预测模式。

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