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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

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。

3. 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.

4. 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。

5. 发明申请

WO2013022748A1 CODING OF TRANSFORM COEFFICIENTS FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的变换系数编码
公开(公告)号：WO2013022748A1
公开(公告)日：2013-02-14
申请号：PCT/US2012/049518
申请日：2012-08-03
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
CPC分类号： H04N19/13 , H04N19/129 , H04N19/157 , H04N19/18 , H04N19/184 , H04N19/436 , H04N19/60 , H04N19/61 , H04N19/91
摘要： This disclosure describes 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 sub-sets as opposed to fixed subblocks. In particular, transform coefficients are scanned in a sub-set consisting of a number of consecutive coefficients according to the scan order.
摘要翻译：本公开描述了在视频编码过程中与残留视频数据块相关联的编码变换系数。本公开的方面包括选择重要性地图编码和级别编码的扫描顺序，以及与所选择的扫描顺序一致的用于熵编码的上下文的选择。本公开提出了对扫描顺序进行协调以对变换系数的有效图进行编码以及对变换系数的等级进行编码。提出，显着图的扫描顺序应该在相反方向（即，从较高频率到较低频率）。本公开还提出，与固定子块相反，在子集中扫描变换系数。具体地，根据扫描顺序，在由多个连续系数组成的子集中扫描变换系数。

6. 发明申请

WO2013006446A1 CONTEXT ADAPTIVE ENTROPY CODING FOR NON-SQUARE BLOCKS IN VIDEO CODING 审中-公开
标题翻译：视频编码中非平方块的自适应熵编码
公开(公告)号：WO2013006446A1
公开(公告)日：2013-01-10
申请号：PCT/US2012/044967
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： H04N7/26
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的视频块的系数进行编码的技术，包括编码一个或多个x坐标和y坐标，该坐标指示块内的最后一个非零系数的位置，根据相关联的扫描顺序，包括通过基于与坐标相对应的宽度和高度之一来确定用于对坐标进行编码的一个或多个上下文来对每个坐标进行编码，以及通过基于该坐标进行上下文自适应熵编码处理来对该坐标进行编码上下文。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来确定用于对信息进行编码的一个或多个上下文，以及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。

7. 发明申请

WO2013003584A1 DERIVATION OF THE POSITION IN SCAN ORDER OF THE LAST SIGNIFICANT TRANSFORM COEFFICIENT IN VIDEO CODING 审中-公开
标题翻译：最终重要变换系数扫描序列中视频编码中的位置派生
公开(公告)号：WO2013003584A1
公开(公告)日：2013-01-03
申请号：PCT/US2012/044633
申请日：2012-06-28
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
CPC分类号： H04N19/13 , H04N19/129 , H04N19/196 , H04N19/44 , H04N19/463 , H04N19/91
摘要： A video decoder converts a block-based LSC indicator into a scan-based LSC indicator. The block-based LSC indicator indicates coordinates of a last significant coefficient of a block of transform coefficients according to a scanning order. The scan-based LSC indicator indicates an ordinal position of the LSC according to the scanning order. The video decoder may decode, based on the scan-based LSC indicator, a significance map for the block.
摘要翻译：视频解码器将基于块的LSC指示符转换为基于扫描的LSC指示符。基于块的LSC指示符根据扫描顺序指示变换系数块的最后有效系数的坐标。基于扫描的LSC指示符根据扫描顺序指示LSC的序数位置。视频解码器可以基于基于扫描的LSC指示符解码该块的重要性映射。

8. 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。

9. 发明申请

WO2012167103A1 CONTEXT-ADAPTIVE CODING VIDEO DATA 审中-公开
标题翻译：背景自适应编码视频数据
公开(公告)号：WO2012167103A1
公开(公告)日：2012-12-06
申请号：PCT/US2012/040491
申请日：2012-06-01
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 , H04N7/50 , H03M7/40
CPC分类号： H03M7/6023 , H03M7/4018 , H03M7/6011 , H04N19/13 , H04N19/196 , H04N19/436 , H04N19/463
摘要： In an example, aspects of this disclosure relate to a method of coding data that includes coding a sequence of bins according to a context adaptive entropy coding process. A current coding cycle used to code at least one bin of the sequence of bins includes determining a context for the bin; selecting a probability model based on the context, wherein the probability model is updated based on a value of a previous bin coded with the context and coded at least two coding cycles prior to the current coding cycle; applying the probability model to code the bin; and updating the probability model based on a value of the bin.
摘要翻译：在一个示例中，本公开的方面涉及一种编码数据的方法，所述方法包括根据上下文自适应熵编码处理来对码序列进行编码。用于对码序列的至少一个bin进行编码的当前编码周期包括确定所述仓的上下文; 基于所述上下文选择概率模型，其中，基于当前编码周期之前用上下文编码的先前存储块的值和编码的至少两个编码周期来更新概率模型; 应用概率模型对仓库进行编码; 以及基于所述仓的值更新所述概率模型。

10. 发明申请

WO2012096943A3 32-POINT TRANSFORM FOR MEDIA DATA CODING 审中-公开
公开(公告)号：WO2012096943A3
公开(公告)日：2012-07-19
申请号：PCT/US2012/020755
申请日：2012-01-10
申请人： QUALCOMM INCORPORATED , JOSHI, Rajan Laxman , REZNIK, Yuriy , SOLE ROJALS, Joel , KARCZEWICZ, Marta
发明人： JOSHI, Rajan Laxman , REZNIK, Yuriy , SOLE ROJALS, Joel , KARCZEWICZ, Marta
IPC分类号： G06F17/14 , H04N7/30
摘要： In general, techniques are described for implementing a 32-point discrete cosine transform (DCT) that is capable of applying multiple DCTs of different sizes. For example, an apparatus comprising a 32-point discrete cosine transform of type II (DCT-II) unit may implement the techniques of this disclosure. The 32-point DCT-II unit performs these DCTs-II of different sizes to transform data from a spatial to a frequency domain. The 32-point DCT-II unit includes an 16-point DCT-II unit that performs one of the DCTs-II of size 16 and at least one 8-point DCT-II unit that performs one of the DCTs-II of size 8. The 16-point DCT-II unit includes another 8-point DCT-II unit. The 16-point DCT-II unit also comprises at least one 4-point DCTs-II unit. Two or more of these DCTs-II units may concurrently perform DCTs-II of different sizes to various portions of the content data.

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