公开(公告)号：US09648332B2

公开(公告)日：2017-05-09

申请号：US14524601

申请日：2014-10-27

Applicant: QUALCOMM Incorporated

Inventor： Woo-Shik Kim ,  Rajan Laxman Joshi ,  Wei Pu ,  Joel Sole Rojals ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/186 ,  H04N19/146 ,  H04N19/105 ,  H04N19/176 ,  H04N19/136

CPC classification number: H04N19/186 ,  H04N19/105 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176

Abstract: A device for decoding video data includes a memory configured to store video data, and at least one processor. The at least one processor is configured to: determine a first bit-depth of luma residual samples for a block of video data, determine a second bit-depth of predicted chroma residual samples for the block of video data, adjust the luma residual samples based on the first bit-depth and the second bit-depth to produce bit-depth adjusted luma residual samples, determine chroma residual samples for the block of video data based on the bit-depth adjusted luma residual samples and the predicted chroma residual samples, and decode the block of video data based on the luma residual samples and the chroma residual samples.

公开(公告)号：US09648319B2

公开(公告)日：2017-05-09

申请号：US14049649

申请日：2013-10-09

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Ying Chen ,  Jianle Chen

IPC: H04N19/33 ,  H04N19/30 ,  H04N19/50 ,  H04N19/463 ,  H04N19/59 ,  H04N19/55 ,  H04N19/34

CPC classification number: H04N19/30 ,  H04N19/33 ,  H04N19/34 ,  H04N19/463 ,  H04N19/50 ,  H04N19/55 ,  H04N19/59

Abstract: An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with an enhancement layer having a first block and a base layer having a second block, the second block in the base layer corresponding to the first block in the enhancement layer. The processor is configured to predict, by inter layer prediction, the first block in the enhancement layer based on information derived from the second block in the base layer. At least a portion of the second block is located outside of a reference region of the base layer, the reference region being available for use for the inter layer prediction of the first block. The processor may encode or decode the video information.

公开(公告)号：US09641836B2

公开(公告)日：2017-05-02

申请号：US13957841

申请日：2013-08-02

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Krishnakanth Rapaka ,  Jianle Chen ,  Marta Karczewicz

IPC: H04B1/66 ,  H04N11/04 ,  H04N7/12 ,  H04N11/02 ,  H04N7/26 ,  H04N19/50 ,  H04N19/597 ,  H04N19/105 ,  H04N19/172 ,  H04N19/30 ,  H04N19/149 ,  H04N19/34

CPC classification number: H04N19/50 ,  H04N19/105 ,  H04N19/149 ,  H04N19/172 ,  H04N19/30 ,  H04N19/34 ,  H04N19/597

Abstract: An apparatus for coding video information according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores video information associated with a reference layer. The processor determines a value of a current video unit based on, at least in part, a reconstruction value associated with the reference layer and an adjusted difference prediction value. The adjusted difference prediction value is equal to a difference between a prediction of a current layer and a prediction of the reference layer multiplied by a weighting factor that is different from 1.

公开(公告)号：US20170094274A1

公开(公告)日：2017-03-30

申请号：US15278855

申请日：2016-09-28

Applicant: QUALCOMM Incorporated

Inventor： Wei-Jung Chien ,  Chao Pang ,  Li Zhang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/124 ,  H04N19/91 ,  H04N19/50 ,  H04N19/44

CPC classification number: H04N19/124 ,  H04N19/11 ,  H04N19/119 ,  H04N19/122 ,  H04N19/126 ,  H04N19/129 ,  H04N19/159 ,  H04N19/176 ,  H04N19/43 ,  H04N19/44 ,  H04N19/463 ,  H04N19/50 ,  H04N19/593 ,  H04N19/91

Abstract: An example device includes a memory device configured to store encoded video data, and processing circuitry coupled to the memory device. The processing circuitry is configured to determine that a rectangular transform unit (TU) of the stored video data includes a number of pixel rows denoted by a first integer value ‘K’ and a number of pixel columns denoted by a second integer value ‘L,’ where K has a value equal to an integer value ‘m’ left shifted by one, and where L has a value equal to an integer value ‘n’ left shifted by one, to determine that a sum of n and m is an odd number, and based on the sum of n and m being the odd number, to add a delta quantization parameter value to a quantization parameter (QP) value for the rectangular TU to obtain a modified QP value for the rectangular TU.

公开(公告)号：US20160373782A1

公开(公告)日：2016-12-22

申请号：US15184089

申请日：2016-06-16

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/583 ,  H04N19/124 ,  H04N19/523 ,  H04N19/174 ,  H04N19/513

CPC classification number: H04N19/583 ,  H04N19/11 ,  H04N19/124 ,  H04N19/13 ,  H04N19/136 ,  H04N19/174 ,  H04N19/176 ,  H04N19/463 ,  H04N19/513 ,  H04N19/523 ,  H04N19/593 ,  H04N19/91

Abstract: A device for decoding video data includes one or more processors configured to derive M most probable modes (MPMs) for intra prediction of a block of video data, wherein M is greater than 3. The one or more processors decode a syntax element that indicates whether a MPM index or a non-MPM index is used to indicate a selected intra prediction mode of the plurality of intra prediction modes for intra prediction of the block of video data. The one or more processors decode the indicated one of the MPM index or the non-MPM index. Furthermore, the one or more processors reconstruct the block of video data based on the selected intra prediction mode.

Abstract translation: 用于解码视频数据的设备包括一个或多个处理器，其被配置为导出M个用于视频数据块的帧内预测的最可能模式（MPM），其中M大于3.一个或多个处理器解码语法元素，其指示是否 MPM索引或非MPM索引用于指示用于视频数据块的帧内预测的多个帧内预测模式的选择的帧内预测模式。 一个或多个处理器解码指​​示的一个MPM索引或非MPM索引。 此外，一个或多个处理器基于所选择的帧内预测模式来重构视频数据块。

公开(公告)号：US20160373770A1

公开(公告)日：2016-12-22

申请号：US15184103

申请日：2016-06-16

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/176 ,  H04N19/124 ,  H04N19/182 ,  H04N19/513 ,  H04N19/82 ,  H04N19/174

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/124 ,  H04N19/136 ,  H04N19/174 ,  H04N19/182 ,  H04N19/463 ,  H04N19/513 ,  H04N19/59 ,  H04N19/593 ,  H04N19/80 ,  H04N19/82

Abstract: A device for decoding video data includes one or more processors configured to decode syntax information that indicates a selected intra prediction mode for a block of video data from among a plurality of intra prediction modes. The plurality of intra prediction modes includes greater than 33 angular intra prediction modes. The angular intra prediction modes defined such that interpolation is performed in 1/32 pel accuracy. The one or more processors reconstruct the block of video data based on the selected intra prediction mode.

Abstract translation: 用于解码视频数据的设备包括一个或多个处理器，被配置为对多个帧内预测模式中的视频数据块指示所选择的帧内预测模式的语法信息进行解码。 多个帧内预测模式包括大于33个角度帧内预测模式。 角度帧内预测模式被定义为使得以1/32像素精度执行插值。 一个或多个处理器基于所选择的帧内预测模式重构视频数据块。

公开(公告)号：US20160373769A1

公开(公告)日：2016-12-22

申请号：US15184051

申请日：2016-06-16

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/176 ,  H04N19/124 ,  H04N19/513 ,  H04N19/174 ,  H04N19/182

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/117 ,  H04N19/124 ,  H04N19/136 ,  H04N19/174 ,  H04N19/182 ,  H04N19/463 ,  H04N19/513 ,  H04N19/59 ,  H04N19/593 ,  H04N19/82

Abstract: A device includes one or more processors configured to derive M most probable modes (MPMs) for intra prediction of a block of video data. As part of deriving the M most probable modes, the one or more processors define a representative intra prediction mode for a left neighboring column and use the representative intra prediction mode for the left neighboring column as an MPM for the left neighboring column, and/or define a representative intra prediction mode for an above neighboring row and use the representative intra prediction mode for the above neighboring row as an MPM for the above neighboring row. A syntax element that indicates whether an MPM index or a non-MPM index is used to indicate a selected intra prediction mode for intra prediction of the block is decoded. The one or more processors reconstruct the block based on the selected intra prediction mode.

Abstract translation: 一种设备包括被配置为导出M个最可能模式（MPM）的一个或多个处理器，用于视频数据块的帧内预测。 作为导出M个最可能模式的一部分，一个或多个处理器为左相邻列定义代表性的帧内预测模式，并将左邻近列的代表性帧内预测模式用作左相邻列的MPM，和/或 定义上述相邻行的代表性帧内预测模式，并将上述相邻行的代表性帧内预测模式用作上述相邻行的MPM。 指示用于指示用于块的帧内预测的所选择的帧内预测模式的MPM索引或非MPM索引的语法元素被解码。 一个或多个处理器基于所选择的帧内预测模式重构块。

公开(公告)号：US20160353113A1

公开(公告)日：2016-12-01

申请号：US15166153

申请日：2016-05-26

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Marta Karczewicz ,  Jianle Chen ,  Wei-Jung Chien

IPC: H04N19/13 ,  H04N19/122 ,  H04N19/625

CPC classification number: H04N19/13 ,  H04N19/122 ,  H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/157 ,  H04N19/159 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/436 ,  H04N19/577 ,  H04N19/625 ,  H04N19/91

Abstract: A video coding device includes processor(s) configured to determine, for each of a plurality of bins of a value for a syntax element of a current transform coefficient, contexts using respective corresponding bins of values for the syntax element of previously coded transform coefficients. The processor(s) are configured to determine a context for an ith bin of the value for the syntax element of the current transform coefficient using a corresponding ith bin of a value for the syntax element of a previously coded transform coefficient. To use the corresponding ith bin of the value for the syntax element of the previously coded transform coefficient, the processor(s) are configured to use only the ith bin, and no other bins, of the value for the syntax element of the previously coded transform coefficient. ‘i’ represents a non-negative integer.

Abstract translation: 视频编码装置包括处理器，其被配置为使用对于先前编码的变换系数的语法元素的各个对应的值来确定针对当前变换系数的语法元素的值的多个块中的每一个的上下文。 处理器被配置为使用对于先前编码的变换系数的语法元素的值的对应的第i个bin来确定当前变换系数的语法元素的值的第i个bin的上下文。 为了使用对于先前编码的变换系数的语法元素的值的对应的第i个bin，处理器被配置为仅使用先前编码的转换系数的语法元素的值的第i个bin，而不使用其他bin 变换系数。 'i'表示非负整数。

公开(公告)号：US20160286230A1

公开(公告)日：2016-09-29

申请号：US15080479

申请日：2016-03-24

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Ying Chen ,  Li Zhang ,  Hongbin Liu ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/513 ,  H04N19/70

CPC classification number: H04N19/513 ,  H04N19/109 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/52 ,  H04N19/56 ,  H04N19/57 ,  H04N19/70 ,  H04N19/96

Abstract: In an example, a method of decoding video data includes selecting a motion information derivation mode from a plurality of motion information derivation modes for determining motion information for a current block, where each motion information derivation mode of the plurality comprises performing a motion search for a first set of reference data that corresponds to a second set of reference data outside of the current block, and where the motion information indicates motion of the current block relative to reference video data. The method also includes determining the motion information for the current block using the selected motion information derivation mode. The method also includes decoding the current block using the determined motion information and without decoding syntax elements representative of the motion information.

Abstract translation: 在一个示例中，视频数据的解码方法包括从用于确定当前块的运动信息的多个运动信息导出模式中选择运动信息导出模式，其中多个运动信息导出模式包括对运动信息推导模式进行运动搜索 第一组参考数据对应于当前块之外的第二组参考数据，并且其中运动信息指示当前块相对于参考视频数据的运动。 该方法还包括使用所选择的运动信息导出模式来确定当前块的运动信息。 该方法还包括使用所确定的运动信息解码当前块，并且不对代表运动信息的语法元素进行解码。

公开(公告)号：US20160234492A1

公开(公告)日：2016-08-11

申请号：US15040913

申请日：2016-02-10

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Hongbin Liu ,  Ying Chen ,  Xin Zhao ,  Li Zhang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/117 ,  H04N19/124 ,  H04N19/61 ,  H04N19/13 ,  H04N19/577 ,  H04N19/52 ,  H04N19/119 ,  H04N19/176 ,  H04N19/139 ,  H04N19/96 ,  H04N19/70 ,  H04N19/593

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/50 ,  H04N19/503 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

Abstract: Examples include a device for coding video data, the device including a memory configured to store video data, and one or more processors configured to obtain adaptive loop filtering (ALF) information for a current coding tree unit (CTU) from one or more of: (i) one or more spatial neighbor CTUs of the current CTU or (ii) one or more temporal neighbor CTUs of the current CTU, to form a candidate list based at least partially on the obtained ALF information for the current CTU, and to perform a filtering operation on the current CTU using ALF information associated with a candidate from the candidate list. Coding video data includes encoding video data, decoding video data, or both encoding and decoding video data.

Abstract translation: 示例包括用于编码视频数据的设备，该设备包括被配置为存储视频数据的存储器，以及被配置为从当前编码树单元（CTU）获得自适应环路滤波（ALF）信息中的一个或多个的一个或多个处理器： （i）当前CTU的一个或多个空间邻居CTU或（ii）当前CTU的一个或多个临时邻居CTU，以至少部分地基于所获得的当前CTU的ALF信息形成候选列表，并执行 使用与来自候选列表的候选者相关联的ALF信息对当前CTU进行过滤操作。 编码视频数据包括编码视频数据，解码视频数据，或编码和解码视频数据。