公开(公告)号：US20140219342A1

公开(公告)日：2014-08-07

申请号：US13756659

申请日：2013-02-01

Applicant: QUALCOMM INCORPORATED

Inventor： Yang Yu ,  Wei-Jung Chien ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/11 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/50

Abstract: In general, techniques are described for reducing the complexity of mode selection when selecting from multiple, different prediction modes. A video coding device comprising a processor may perform the techniques. The processor may compute approximate costs for a pre-defined set of intra-prediction modes identified in a current set. The current set of intra-prediction modes may include fewer modes than a total number of intra-prediction modes. The processor may compare approximate costs computed for one or more most probable intra-prediction modes to a threshold and replace one or more of the intra-prediction modes of the current set with one or more most probable intra-prediction modes. The processor may perform rate distortion analysis with respect to each intra-prediction mode identified in the current set and perform intra-prediction coding with respect to the current block using a mode of the current set.

Abstract translation: 一般来说，描述了当从多种不同的预测模式进行选择时降低模式选择的复杂度的技术。 包括处理器的视频编码装置可以执行这些技术。 处理器可以计算在当前集合中识别的预定义的帧内预测模式集合的近似成本。 当前的帧内预测模式集合可以包括比总内帧数据预测模式少的模式。 处理器可以将针对一个或多个最可能的帧内预测模式计算的近似成本与阈值进行比较，并用一个或多个最可能的帧内预测模式来替换当前集合的一个或多个帧内预测模式。 处理器可以针对当前集合中识别的每个帧内预测模式执行速率失真分析，并使用当前集合的模式对当前块执行帧内预测编码。

公开(公告)号：US20130272413A1

公开(公告)日：2013-10-17

申请号：US13861302

申请日：2013-04-11

Applicant: QUALCOMM INCORPORATED

Inventor： Vadim Seregin ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N11/02

CPC classification number: H04N19/51 ,  H04N19/174 ,  H04N19/43 ,  H04N19/436 ,  H04N19/463 ,  H04N19/52 ,  H04N19/56

Abstract: In one example, an apparatus for coding video data comprises a video coder configured to, for a parallel motion estimation (PME) region comprising a plurality of blocks of video data within the PME region, identify a common set of spatial candidate blocks outside of and adjacent to the PME region, each of the common set of spatial candidate blocks at a respective, predefined location relative to the PME region and, for each of the blocks within the PME region for which motion information prediction is performed, generate a respective motion information candidate list, wherein, for at least some of the blocks within the PME region for which motion information prediction is performed, generating the motion information candidate list comprises evaluating motion information of at least one of the common set of spatial candidate blocks for inclusion in the motion information candidate list for the block.

Abstract translation: 在一个示例中，用于对视频数据进行编码的装置包括：视频编码器，被配置为：对于包括PME区域内的多个视频数据块的并行运动估计（PME）区域，识别出在该PME区域外的一组共同的空间候选块， 与PME区域相邻，在相对于PME区域的相应的预定位置处的每个公共空间候选块集合以及对于执行运动信息预测的PME区域内的每个块生成相应的运动信息 候选列表，其中，对于执行运动信息预测的PME区域中的至少一些块生成运动信息候选列表，包括评估所述公共空间候选块中的至少一个的运动信息，以包含在所述候选列表中 块的运动信息候选列表。

公开(公告)号：US20130272381A1

公开(公告)日：2013-10-17

申请号：US13863266

申请日：2013-04-15

Applicant: QUALCOMM INCORPORATED

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/50

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/122 ,  H04N19/159 ,  H04N19/619

Abstract: In an example, a method of decoding video data includes determining a prediction partitioning structure for predicting pixel values associated with a block of video data. The method also includes determining a transform partitioning structure for applying one or more transforms to the predicted pixel values. Determining the transform split structure includes splitting a parent transform unit, upon determining the transform partitioning structure comprises splitting the parent transform unit into one or more square transforms, determining one or more square transforms such that each of the one or more square transforms correspond to exactly one prediction partition, and upon determining the transform partitioning structure comprises splitting the parent transform unit into one or more non-square transforms, determining whether to split the one or more non-square transforms based at least in part on the one or more non-square transforms being non-square.

Abstract translation: 在一个示例中，解码视频数据的方法包括确定用于预测与视频数据块相关联的像素值的预测分区结构。 该方法还包括确定用于将一个或多个变换应用于预测像素值的变换分割结构。 确定变换分割结构包括拆分父变换单元，在确定变换分割结构包括将父变换单元分解成一个或多个正方变换时，确定一个或多个正方变换，使得一个或多个正方变换中的每一个与精确对应 一个预测分区，并且在确定所述变换分割结构时，包括将所述父变换单元拆分为一个或多个非方变换，至少部分地基于所述一个或多个非平方变换确定是否分割所述一个或多个非方变换， 正方形变换为非正方形。

公开(公告)号：US20130266074A1

公开(公告)日：2013-10-10

申请号：US13739598

申请日：2013-01-11

Applicant: QUALCOMM INCORPORATED

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/96 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: A video encoder generates a bitstream that includes a residual quad tree (RQT) for a coding unit (CU). The CU is larger than a maximum-allowable transform unit (TU) size and the RQT includes a hierarchy of nodes. A root node of the RQT corresponds to the CU as a whole and leaf nodes of the RQT correspond to TUs of the CU. The root node is associated with a coded block flag (CBF) for a chroma component. The CBF for the chroma component indicates whether any of the TUs of the CU are associated with a significant coefficient block that is based on samples of the particular chroma component. A video decoder receives the bitstream and determines, based on the CBF, whether coefficient blocks associated with TUs that correspond to the leaf nodes include non-zero coefficients.

Abstract translation: 视频编码器生成包括用于编码单元（CU）的残余四叉树（RQT）的比特流。 CU大于最大允许变换单位（TU）大小，并且RQT包括节点层级。 RQT的根节点对应于CU，并且RQT的叶节点对应于CU的TU。 根节点与色度分量的编码块标志（CBF）相关联。 用于色度分量的CBF指示CU中的任何TU是否与基​​于特定色度分量的样本的显着系数块相关联。 视频解码器接收比特流并且基于CBF确定与叶节点对应的TU相关联的系数块是否包括非零系数。

公开(公告)号：US20130202038A1

公开(公告)日：2013-08-08

申请号：US13761924

申请日：2013-02-07

Applicant: QUALCOMM INCORPORATED

Inventor： Vadim Seregin ,  Xianglin Wang ,  Joel Sole Rojals ,  Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/51 ,  H04N19/109 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/577

Abstract: A video coding device generates a motion vector (MV) candidate list for a prediction unit (PU) of a coding unit (CU) that is partitioned into four equally-sized PUs. The video coding device converts a bi-directional MV candidate in the MV candidate list into a uni-directional MV candidate. In addition, the video coding device determines a selected MV candidate in the merge candidate list and generates a predictive video block for the PU based at least in part on one or more reference blocks indicated by motion information specified by the selected MV candidate.

Abstract translation: 视频编码装置生成被划分为四个相同尺寸的PU的编码单元（CU）的预测单元（PU）的运动矢量（MV）候选列表。 视频编码装置将MV候选列表中的双向MV候选转换为单向MV候选。 此外，视频编码装置在合并候选列表中确定选定的MV候选，并且至少部分地基于由所选择的MV候选项指定的运动信息指示的一个或多个参考块生成用于PU的预测视频块。

公开(公告)号：US20130195199A1

公开(公告)日：2013-08-01

申请号：US13748257

申请日：2013-01-23

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/91 ,  H04N19/463

Abstract: A video decoding device receives an array of transform coefficients for a chroma component of video data. The video decoding device receives entropy encoded data representing the value of a split flag associated with the chroma component. The value of the split flag indicates whether the array of transform coefficients is divided into smaller transform blocks. The video decoding device determines a context for the entropy encoded data representing the split flag. The context is based on the value of a split flag associated with another component of video data. The video decoding device entropy decodes the data representing the value of the split flag based on the determined context using context adaptive binary arithmetic coding (CABAC). The luma and chroma components have independent residual quadtree (RQT) structures.

Abstract translation: 视频解码装置接收视频数据的色度分量的变换系数的阵列。 视频解码装置接收表示与色度分量相关联的分割标志的值的熵编码数据。 分割标志的值指示变换系数的阵列是否被分割成更小的变换块。 视频解码装置确定表示分割标志的熵编码数据的上下文。 上下文基于与视频数据的另一个组件相关联的分割标志的值。 视频解码装置使用上下文自适应二进制算术编码（CABAC），基于所确定的上下文来熵解码表示分割标志的值的数据。 亮度和色度分量具有独立的残余四叉树（RQT）结构。

公开(公告)号：US20130195189A1

公开(公告)日：2013-08-01

申请号：US13746148

申请日：2013-01-21

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Xianglin Wang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/147 ,  H04N19/436 ,  H04N19/52 ,  H04N19/543

Abstract: A method for decoding video data is described. The method may comprise receiving an indication of a size of a parallel motion estimation (PME) area, performing a motion vector prediction process on coding units having a size smaller than or equal to the PME area using a PME style candidate list construction process and the PME area, deriving an implicit PME area for coding units having a size larger than the PME area, and performing the motion vector prediction process on coding units having the size larger than the PME area using the PME style candidate list construction process and the implicit PME area.

Abstract translation: 描述用于解码视频数据的方法。 该方法可以包括接收平行运动估计（PME）区域的大小的指示，使用PME样式候选列表构造过程对具有小于或等于PME区域的编码单元执行运动矢量预测处​​理，并且 PME区域，导出具有大于PME区域的编码单元的隐式PME区域，以及使用PME样式候选列表构造处理和隐式PME对具有大于PME区域的大小的编码单元执行运动向量预测处理 区。

公开(公告)号：US20130188716A1

公开(公告)日：2013-07-25

申请号：US13744197

申请日：2013-01-17

Applicant: QUALCOMM INCORPORATED

Inventor： Vadim Seregin ,  Xianglin Wang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/56 ,  H04N19/50 ,  H04N19/52 ,  H04N19/573 ,  H04N19/61

Abstract: The techniques of this disclosure may be generally related to temporal motion vector prediction candidate. A video coder may determine a temporal motion vector prediction candidate for a plurality of blocks only once. Each of the plurality of blocks may include different spatial motion vector prediction candidates, but the temporal motion vector prediction candidate for the plurality of blocks may be the same.

Abstract translation: 本公开的技术通常可以与时间运动矢量预测候选相关。 视频编码器可以仅确定多个块的时间运动矢量预测候选一次。 多个块中的每一个可以包括不同的空间运动矢量预测候选，但是多个块的时间运动矢量预测候选可以相同。

公开(公告)号：US20130188715A1

公开(公告)日：2013-07-25

申请号：US13735974

申请日：2013-01-07

Applicant: QUALCOMM Incorporated

Inventor： VADIM SEREGIN ,  Xianglin Wang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/52 ,  H04N19/503 ,  H04N19/61

Abstract: A video coding device configured according to some aspects of this disclosure includes a memory configured to store an initial list of motion vector candidates and a temporal motion vector predictor (TMVP). The video coding device also includes a processor in communication with the memory. The processor is configured to obtain a merge candidate list size value (N) and identify motion vector candidates to include in a merge candidate list having a list size equal to the merge candidate list size value. The merge candidate list may be a merge motion vector (MV) candidate list or a motion vector predictor (MVP) candidate list (also known as an AMVP candidate list). The processor generates the merge candidate list such that the merge candidate list includes the TMVP, regardless of the list size.

Abstract translation: 根据本公开的一些方面配置的视频编码装置包括被配置为存储运动矢量候选的初始列表和时间运动矢量预测器（TMVP）的存储器。 视频编码装置还包括与存储器通信的处理器。 处理器被配置为获得合并候选列表大小值（N）并且识别运动向量候选以包括在具有等于合并候选列表大小值的列表大小的合并候选列表中。 合并候选列表可以是合并运动矢量（MV）候选列表或运动矢量预测器（MVP）候选列表（也称为AMVP候选列表）。 处理器生成合并候选列表，使得合并候选列表包括TMVP，而不考虑列表大小。

公开(公告)号：US20130128971A1

公开(公告)日：2013-05-23

申请号：US13682153

申请日：2012-11-20

Applicant: Qualcomm Incorporated

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/159 ,  H04N19/122 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61

Abstract: Aspects of this disclosure relate to coding video data. In an example, a method of coding video data includes determining a first residual quadtree (RQT) depth at which to apply one or more first transforms to residual video data based on at least one characteristic of the residual of video data. The method also includes determining a second RQT depth at which to apply one or more second transforms to the residual video data based on the at least one characteristic. The method also includes coding the residual video data using the one or more first transforms and the one or more second transforms.

Abstract translation: 本公开的方面涉及编码视频数据。 在一个示例中，视频数据编码的方法包括基于视频数据的剩余部分的至少一个特征来确定用于将一个或多个第一变换应用于残余视频数据的第一残余四叉树（RQT）深度。 所述方法还包括基于所述至少一个特征来确定用于将一个或多个第二变换应用于所述残余视频数据的第二RQT深度。 该方法还包括使用一个或多个第一变换和一个或多个第二变换对剩余视频数据进行编码。