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1. 发明申请

WO2013012930A9 COEFFICIENT SCANNING IN VIDEO CODING 审中-公开
公开(公告)号：WO2013012930A9
公开(公告)日：2013-01-24
申请号：PCT/US2012/047220
申请日：2012-07-18
申请人： QUALCOMM Incorporated , JOSHI, Rajan Laxman , SOLE ROJALS, Joel , KARCZEWICZ, Marta , ZHENG, Yunfei , WANG, Xianglin
发明人： JOSHI, Rajan Laxman , SOLE ROJALS, Joel , KARCZEWICZ, Marta , ZHENG, Yunfei , WANG, Xianglin
IPC分类号： H04N7/26 , H04N7/50
摘要： In an example, aspects of this disclosure relate to a method for decoding transform coefficients in a video decoding process that includes decoding a one-dimensional array of transform coefficients, and performing a scan on the one-dimensional array of transform coefficients according to a sub-block scan order and a coefficient scan order to produce a block of transform coefficients, where the sub-block scan order comprises an order in which each sub-block of a plurality of sub-blocks within the block is scanned, and where the coefficient scan order comprises an order in which the transform coefficients corresponding to each sub-block of the plurality of sub-blocks are scanned.

2. 发明申请

WO2012087713A1 MODE DEPENDENT SCANNING OF COEFFICIENTS OF A BLOCK OF VIDEO DATA 审中-公开
标题翻译：视频数据块的系数的模式相关扫描
公开(公告)号：WO2012087713A1
公开(公告)日：2012-06-28
申请号：PCT/US2011/064964
申请日：2011-12-14
申请人： QUALCOMM INCORPORATED , ZHENG, Yunfei , COBAN, Muhammed Zeyd , SOLE ROJALS, Joel , KARCZEWICZ, Marta
发明人： ZHENG, Yunfei , COBAN, Muhammed Zeyd , SOLE ROJALS, Joel , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/157 , H04N19/129 , H04N19/134 , H04N19/146 , H04N19/176 , H04N19/196 , H04N19/46
摘要： This disclosure describes apparatuses and methods of encoding coefficients associated with a block of video data. In one example, a method may comprise selecting a scan order for the coefficients based on an intra coding mode used to predict the block of video data and a transform block size used in transforming the block of video data, and generating a syntax element to communicate the selected scan order for the block of video data.
摘要翻译：本公开描述了与视频数据块相关联的编码系数的装置和方法。在一个示例中，方法可以包括基于用于预测视频数据块的帧内编码模式和用于变换视频数据块的变换块大小，选择用于系数的扫描顺序，以及生成用于通信的语法元素所选择的视频数据块的扫描顺序。

3. 发明申请

WO2012075181A1 SEPARATELY CODING THE POSITION OF A LAST SIGNIFICANT COEFFICIENT OF A VIDEO BLOCK IN VIDEO CODING 审中-公开
标题翻译：在视频编码中单独编码视频块的最新重要系数的位置
公开(公告)号：WO2012075181A1
公开(公告)日：2012-06-07
申请号：PCT/US2011/062700
申请日：2011-11-30
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 , H04N7/30 , H04N7/50 , H03M7/40
CPC分类号： H04N19/00157 , H03M7/4018 , H03M7/4075 , H03M7/6035 , H04N19/129 , H04N19/13 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/436 , H04N19/61 , H04N19/70
摘要： 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 information that identifies a position of a last nonzero coefficient within the block according to a scanning order associated with the block prior to coding information that identifies positions of other nonzero coefficients within the block, including at least one of the following: coding a one-dimensional position within the block that identifies the position of the last nonzero coefficient; coding a two-dimensional position within the block that identifies the position of the last nonzero coefficient, and coding a flag that indicates whether the last nonzero coefficient is located within a range of positions within the block, and coding the one-dimensional position when the last nonzero coefficient is located within the range, and otherwise coding the two-dimensional position.
摘要翻译：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，其中该装置包括视频编码器，其被配置为根据与该数据块相关联的扫描顺序来识别块内最后一个非零系数的位置的信息编码信息之前的块，其识别所述块内的其他非零系数的位置，包括以下中的至少一个：对所述块内的一维位置进行编码，所述一维位置标识所述最后非零系数的位置; 编码所述块内的二维位置，其识别所述最后非零系数的位置，以及编码指示所述最后非零系数是否位于所述块内的位置范围内的标志，以及当所述一维位置在最后一个非零系数位于该范围内，否则编码二维位置。

4. 发明申请

WO2012045041A1 ENTROPY CODING COEFFICIENTS USING A JOINT CONTEXT MODEL 审中-公开
标题翻译：使用联合语境模型进行熵编码系统
公开(公告)号：WO2012045041A1
公开(公告)日：2012-04-05
申请号：PCT/US2011/054425
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大小的变换单元之间共享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。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。

5. 发明申请

WO2013012930A1 COEFFICIENT SCANNING IN VIDEO CODING 审中-公开
标题翻译：视频编码中的系统扫描
公开(公告)号：WO2013012930A1
公开(公告)日：2013-01-24
申请号：PCT/US2012047220
申请日：2012-07-18
申请人： QUALCOMM INC , JOSHI RAJAN LAXMAN , SOLE ROJALS JOEL , KARCZEWICZ MARTA , ZHENG YUNFEI , WANG XIANGLIN
发明人： JOSHI RAJAN LAXMAN , SOLE ROJALS JOEL , KARCZEWICZ MARTA , ZHENG YUNFEI , WANG XIANGLIN
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/625 , H04N19/129 , H04N19/147 , H04N19/159 , H04N19/176 , H04N19/436 , H04N19/61
摘要： In an example, aspects of this disclosure relate to a method for decoding transform coefficients in a video decoding process that includes decoding a one-dimensional array of transform coefficients, and performing a scan on the one-dimensional array of transform coefficients according to a sub-block scan order and a coefficient scan order to produce a block of transform coefficients, where the sub-block scan order comprises an order in which each sub-block of a plurality of sub-blocks within the block is scanned, and where the coefficient scan order comprises an order in which the transform coefficients corresponding to each sub-block of the plurality of sub-blocks are scanned.
摘要翻译：在一个示例中，本公开的方面涉及用于解码视频解码处理中的变换系数的方法，该方法包括对变换系数的一维阵列进行解码，以及根据子像素对变换系数的一维阵列进行扫描块扫描顺序和系数扫描顺序以产生变换系数块，其中子块扫描顺序包括其中扫描块内的多个子块的每个子块的顺序，并且其中系数扫描顺序包括扫描与多个子块中的每个子块相对应的变换系数的顺序。

6. 发明申请

WO2013006297A1 APPLYING NON-SQUARE TRANSFORMS TO VIDEO DATA 审中-公开
标题翻译：将非正方形变换应用于视频数据
公开(公告)号：WO2013006297A1
公开(公告)日：2013-01-10
申请号：PCT/US2012/044043
申请日：2012-06-25
申请人： QUALCOMM INCORPORATED , GUO, Liwei , SOLE ROJALS, Joel , JOSHI, Rajan Laxman , CHEN, Peisong , WANG, Xianglin , KARCZEWICZ, Marta
发明人： GUO, Liwei , SOLE ROJALS, Joel , JOSHI, Rajan Laxman , CHEN, Peisong , WANG, Xianglin , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/96 , H04N19/119 , H04N19/122 , H04N19/176 , H04N19/46 , H04N19/70
摘要： In one example, a device for coding video data includes a video coder, such as a video encoder or a video decoder, that is configured to code information indicative of whether a transform unit of the video data is square or non-square, and code data of the transform unit based at least in part on whether the transform unit is square or non- square. In this manner, the video coder may utilize non-square transform units. The video coder may be configured to use non-square transform units for certain situations, such as only for chrominance or luminance components or only when a corresponding prediction unit is non-square. The video coder may further be configured to perform an entropy coding process that selects context for coding data of the transform unit based on whether the transform unit is square or non-square.
摘要翻译：在一个示例中，用于编码视频数据的设备包括诸如视频编码器或视频解码器的视频编码器，其被配置为对指示视频数据的变换单元是正方形还是非正方形的信息进行编码，以及代码所述变换单元的数据至少部分地基于所述变换单元是平方还是非正方形。以这种方式，视频编码器可以利用非正方形变换单元。视频编码器可以被配置为在诸如仅用于色度或亮度分量的某些情况下使用非平方变换单元，或者仅当相应的预测单元是非正方形时才使用。视频编码器还可以被配置为执行熵编码处理，其基于变换单元是正方形还是非正方形来选择用于对变换单元的数据进行编码的上下文。

7. 发明申请

WO2012122284A9 CODING OF TRANSFORM COEFFICIENTS FOR VIDEO CODING 审中-公开
公开(公告)号：WO2012122284A9
公开(公告)日：2012-09-13
申请号：PCT/US2012/028093
申请日：2012-03-07
申请人： QUALCOMM INCORPORATED , SOLE ROJALS, Joel , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50
摘要： This disclosure describes techniques for coding transform coefficients associated with a block of residual video data in a video coding process. Aspects of this disclosure include the selection of a scan order for both significance map coding and level coding, as well as the selection of contexts for entropy coding consistent with the selected scan order. This disclosure proposes a harmonization of the scan order to code both the significance map of the transform coefficients as well as to code the levels of the transform coefficient. It is proposed that the scan order for the significance map should be in the inverse direction (i.e., from the higher frequencies to the lower frequencies). This disclosure also proposes that transform coefficients be scanned in subsets as opposed to fixed subblocks. In particular, transform coefficients are scanned in a subset consisting of a number of consecutive coefficients according to the scan order.

8. 发明申请

WO2012087959A1 CODING THE POSITION OF A LAST SIGNIFICANT COEFFICIENT OF A VIDEO BLOCK IN VIDEO CODING 审中-公开
标题翻译：编码视频编码中视频块的最新重要系数的位置
公开(公告)号：WO2012087959A1
公开(公告)日：2012-06-28
申请号：PCT/US2011/065888
申请日：2011-12-19
申请人： QUALCOMM INCORPORATED , ZHENG, Yunfei , COBAN, Muhammed Zeyd , SOLE ROJALS, Joel , KARCZEWICZ, Marta
发明人： ZHENG, Yunfei , COBAN, Muhammed Zeyd , SOLE ROJALS, Joel , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/50 , H03M7/40
CPC分类号： H04N19/00 , H03M7/4018 , H04N19/61
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 information that identifies a position of a last non-zero coefficient within the block according to a scanning order associated with the block, wherein to code the information, the video coder is configured to perform a context adaptive entropy coding process that includes the video coder applying a context model based on at least three contexts, wherein the at least three contexts include a size associated with the block, a position of a given one of the coefficients within the block according to the scanning order, and the scanning order.
摘要翻译：在一个示例中，公开了一种用于在视频编码处理期间对与视频数据块相关联的系数进行编码的装置，其中，该装置包括：视频编码器，被配置为编码识别块内最后非零系数的位置的信息，与所述块相关联的扫描顺序，其中为了对所述信息进行编码，所述视频编码器被配置为执行上下文自适应熵编码处理，所述上下文自适应熵编码处理包括基于至少三个上下文应用上下文模型的所述视频编码器，其中所述至少三个上下文包括与块相关联的大小，根据扫描顺序的块内的给定一个系数的位置和扫描顺序。

9. 发明申请

WO2013006446A9 CONTEXT ADAPTIVE ENTROPY CODING FOR NON-SQUARE BLOCKS IN VIDEO CODING 审中-公开
标题翻译：视频编码中非方块的上下文自适应熵编码
公开(公告)号：WO2013006446A9
公开(公告)日：2013-02-28
申请号：PCT/US2012044967
申请日：2012-06-29
申请人： QUALCOMM INC , SOLE ROJALS JOEL , JOSHI RAJAN LAXMAN , KARCZEWICZ MARTA
发明人： SOLE ROJALS JOEL , JOSHI RAJAN LAXMAN , KARCZEWICZ MARTA
IPC分类号： H04N7/26
CPC分类号： H04N19/60 , H04N19/129 , H04N19/13 , H04N19/176 , H04N19/18 , H04N19/45 , H04N19/625 , H04N19/91 , H04N19/93 , H04W88/02
摘要： Disclosed are techniques for coding coefficients of a video block having a nonsquare shape defined by a width and a height, comprising coding one or more of x- and y-coordinates that indicate a position of a last non-zero coefficient within the block according to an associated scanning order, including coding each coordinate by determining one or more contexts used to code the coordinate based on one of the width and the height that corresponds to the coordinate, and coding the coordinate by performing a context adaptive entropy coding process based on the contexts. Also disclosed are techniques for coding information that identifies positions of non-zero coefficients within the block, including determining one or more contexts used to code the information based on one or more of the width and the height, and coding the information by performing a context adaptive entropy coding process based on the contexts.
摘要翻译：公开了用于对具有由宽度和高度限定的非正方形形状的视频块的系数进行编码的技术，该技术包括对x和y坐标中的一个或多个进行编码，所述一个或多个坐标指示块内最后一个非零系数的位置，相关联的扫描顺序，包括通过基于对应于所述坐标的宽度和高度中的一个确定用于对坐标进行编码的一个或多个上下文来编码每个坐标，以及通过执行上下文自适应熵编码处理对坐标进行编码，所述上下文自适应熵编码处理基于上下文。还公开了用于编码识别块内的非零系数的位置的信息的技术，包括基于宽度和高度中的一个或多个确定用于对信息进行编码的一个或多个上下文，并且通过执行上下文对信息进行编码基于上下文的自适应熵编码过程。

10. 发明申请

WO2013003798A1 CONTEXTS FOR COEFFICIENT LEVEL CODING IN VIDEO COMPRESSION 审中-公开
标题翻译：视频压缩中的系统级编码的内容
公开(公告)号：WO2013003798A1
公开(公告)日：2013-01-03
申请号：PCT/US2012/045088
申请日：2012-06-29
申请人： QUALCOMM INCORPORATED , SOLE ROJALS, Joel , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
IPC分类号： H04N7/50
CPC分类号： H04N19/91 , H04N19/61
摘要： This disclosure describes techniques for coding video data. In particular, this disclosure describes techniques for entropy coding of residual transform coefficients generated by a video coding process. In one example, a method selects a bin 2 context for coding a bin 2 level of one or more transform coefficients in the vector according to the entropy coding process. The method further codes the bin 2 level of one or more transform coefficients in the vector according to the selected bin 2 context. Selecting the bin 2 context comprises selecting the bin 2 context for a current transform coefficient in the vector based on the bin 2 level of one or more previously coded transform coefficients in the vector.
摘要翻译：本公开描述了用于编码视频数据的技术。特别地，本公开描述了由视频编码处理生成的残差变换系数的熵编码技术。在一个示例中，方法根据熵编码处理选择用于编码向量中的一个或多个变换系数的bin 2级的bin 2上下文。该方法还根据所选择的bin 2上下文对向量中的一个或多个变换系数的bin 2级进行编码。选择bin 2上下文包括基于向量中的一个或多个先前编码的变换系数的bin 2级别来选择向量中的当前变换系数的bin 2上下文。

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