公开(公告)号：US20170208336A1

公开(公告)日：2017-07-20

申请号：US15404634

申请日：2017-01-12

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/44 ,  H04N19/60 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/105 ,  H04N19/119 ,  H04N19/136 ,  H04N19/172 ,  H04N19/176 ,  H04N19/50 ,  H04N19/60 ,  H04N19/70

Abstract: A method of decoding video data including receiving a bitstream that includes a sequence of bits that forms a representation of a coded picture of the video data, partitioning the coded picture of the video data into a plurality of blocks using three or more different partition structures, and reconstructing the plurality of blocks of the coded picture of the video data. Partitioning the coded picture of the video data may include partitioning the coded picture of the video data into the plurality of blocks using the three or more different partition structures, wherein at least three of the three or more different partition structures may be used at each depth of a tree structure that represents how a particular block of the coded picture of the video data is partitioned.

公开(公告)号：US09667996B2

公开(公告)日：2017-05-30

申请号：US14496991

申请日：2014-09-25

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Geert Van der Auwera ,  Li Zhang ,  Hongbin Liu

IPC: H04N19/597 ,  H04N19/53 ,  H04N19/56 ,  H04N19/196 ,  H04N19/52

CPC classification number: H04N19/597 ,  H04N19/197 ,  H04N19/52 ,  H04N19/53 ,  H04N19/56

Abstract: Techniques are described for sub-prediction unit (PU) based motion prediction for video coding in HEVC and 3D-HEVC. In one example, the techniques include an advanced temporal motion vector prediction (TMVP) mode to predict sub-PUs of a PU in single layer coding for which motion vector refinement may be allowed. The advanced TMVP mode includes determining motion vectors for the PU in at least two stages to derive motion information for the PU that includes different motion vectors and reference indices for each of the sub-PUs of the PU. In another example, the techniques include storing separate motion information derived for each sub-PU of a current PU predicted using a sub-PU backward view synthesis prediction (BVSP) mode even after motion compensation is performed. The additional motion information stored for the current PU may be used to predict subsequent PUs for which the current PU is a neighboring block.

公开(公告)号：US20170150183A1

公开(公告)日：2017-05-25

申请号：US15359568

申请日：2016-11-22

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/91 ,  H04N19/119 ,  H04N19/61

CPC classification number: H04N19/649 ,  G06F17/147 ,  H04N19/105 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/42 ,  H04N19/573 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/91 ,  H04N19/96

Abstract: As part of a process of encoding video data, a video encoder applies a transform to a non-square residual block to generate a block of transform coefficients. Furthermore, the video encoder modifies the transform coefficients such that each respective transform coefficient of the block of transform coefficients is based on the respective dequantized transform coefficient multiplied by a factor of √{square root over (2)} or an approximation of √{square root over (2)}. As part of a process of decoding video data, a video decoder applies, by the video decoder, a dequantization process to transform coefficients of a non-square transform block. The video decoder modifies the dequantized transform coefficients such that each respective dequantized transform coefficient of the dequantized transform coefficients is based on the respective dequantized transform coefficient divided by a factor of √{square root over (2)} or an approximation of √{square root over (2)}.

公开(公告)号：US09635357B2

公开(公告)日：2017-04-25

申请号：US14189679

申请日：2014-02-25

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Jewon Kang

IPC: H04N19/583 ,  H04N19/56 ,  H04N19/52 ,  H04N19/53 ,  H04N19/44

CPC classification number: H04N19/51 ,  H04N19/44 ,  H04N19/52 ,  H04N19/53 ,  H04N19/56

Abstract: In one example of the disclosure, a method of coding video data comprises coding video data using texture-first coding, and performing an NBDV derivation process for a block of the video data using a plurality of neighboring blocks. The NBDV derivation process comprises designating a motion vector associated with a neighboring block of the plurality of neighboring blocks coded with a block-based view synthesis prediction (BVSP) mode as an available disparity motion.

公开(公告)号：US09544566B2

公开(公告)日：2017-01-10

申请号：US14104053

申请日：2013-12-12

Applicant: QUALCOMM Incorporated

Inventor： Jewon Kang ,  Ying Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/00 ,  H04N13/00 ,  H04N19/597 ,  H04N19/105 ,  H04N19/52 ,  H04N19/176 ,  H04N19/593 ,  H04N19/11 ,  H04N19/156 ,  H04N19/44 ,  H04N19/55

CPC classification number: H04N13/128 ,  H04N19/105 ,  H04N19/11 ,  H04N19/156 ,  H04N19/176 ,  H04N19/44 ,  H04N19/52 ,  H04N19/55 ,  H04N19/593 ,  H04N19/597

Abstract: A parent block is partitioned into the plurality of blocks and a disparity vector derivation process is performed to derive a disparity vector for a representative block in the plurality of blocks. A video encoder generates a bitstream that includes a coded representation of the video data in part by performing, based on the derived disparity vector and without separately deriving disparity vectors for any block in the plurality of blocks other than the representative block, inter-view prediction for two or more blocks in the plurality of blocks. A video decoder reconstructs sample blocks for two or more blocks in the plurality of blocks in part by performing, based on the derived disparity vector and without separately deriving disparity vectors for any block in the plurality of blocks other than the representative block, inter-view prediction for the two or more blocks in the plurality of blocks.

Abstract translation: 将父块划分为多个块，并执行视差矢量导出处理以导出多个块中的代表块的视差矢量。 视频编码器生成包括视频数据的编码表示的比特流，部分地通过基于导出的视差向量执行，并且除了代表块之外的多个块中的任何块的任何块没有单独导出视差向量，视角间预测 对于多个块中的两个或更多块。 视频解码器部分地通过基于导出的视差向量来执行多个块中的两个或更多个块的采样块，并且除了代表块之外的多个块中的任何块的任何块没有单独导出视差矢量， 预测多个块中的两个或多个块。

公开(公告)号：US20160366435A1

公开(公告)日：2016-12-15

申请号：US15176790

申请日：2016-06-08

Applicant: QUALCOMM Incorporated

Inventor： Wei-Jung Chien ,  Xianglin Wang ,  Li Zhang ,  Hongbin Liu ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/52 ,  H04N19/172 ,  H04N19/176

CPC classification number: H04N19/52 ,  H04N19/172 ,  H04N19/176 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70

Abstract: In one example, a device for decoding video data includes a memory configured to store video data and a video decoder configured to determine that a motion prediction candidate for a current block of video data indicates that motion information is to be derived for sub-blocks of the current block, in response to the determination: partition the current block into the sub-blocks, for each of the sub-blocks, derive motion information using motion information for at least two neighboring blocks, and decode the sub-blocks using the respective derived motion information.

Abstract translation: 在一个示例中，用于解码视频数据的设备包括被配置为存储视频数据的存储器和被配置为确定当前视频数据块的运动预测候选的视频解码器指示要为 当前块，响应于确定：对于每个子块将当前块划分到子块中，使用至少两个相邻块的运动信息导出运动信息，并且使用相应的块来解码子块 派生运动信息。

公开(公告)号：US09521389B2

公开(公告)日：2016-12-13

申请号：US14198442

申请日：2014-03-05

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Li Zhang

IPC: H04N19/53 ,  H04N13/00 ,  H04N19/597 ,  H04N19/56

CPC classification number: H04N13/106 ,  H04N19/56 ,  H04N19/597

Abstract: A video coder stores only one derived disparity vector (DDV) for a slice of a current picture of the video data. The video coder uses the DDV for the slice in a Neighboring Block Based Disparity Vector (NBDV) derivation process to determine a disparity vector for a particular block. Furthermore, the video coder stores, as the DDV for the slice, the disparity vector for the particular block.

Abstract translation: 视频编码器仅存储视频数据的当前图像的切片的一个派生视差矢量（DDV）。 视频编码器在基于相邻块的视差向量（NBDV）导出过程中使用DDV作为切片，以确定特定块的视差向量。 此外，视频编码器存储特定块的视差向量作为切片的DDV。

公开(公告)号：US09516332B2

公开(公告)日：2016-12-06

申请号：US14133994

申请日：2013-12-19

Applicant: QUALCOMM Incorporated

Inventor： Jewon Kang ,  Ying Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/436 ,  H04N19/513 ,  H04N19/52 ,  H04N19/597

CPC classification number: H04N19/436 ,  H04N19/513 ,  H04N19/52 ,  H04N19/597

Abstract: A video coder searches a set of neighbor blocks to generate a plurality of disparity vector candidates. Each of the neighbor blocks is a spatial or temporal neighbor of a current block. The video coder determines, based at least in part on the plurality of disparity vector candidates, a final disparity vector for the current block.

Abstract translation: 视频编码器搜索一组相邻块以产生多个视差向量候选。 每个相邻块是当前块的空间或时间邻居。 视频编码器至少部分地基于多个视差向量候选来确定当前块的最终视差向量。

公开(公告)号：US09516306B2

公开(公告)日：2016-12-06

申请号：US14225985

申请日：2014-03-26

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Xin Zhao

IPC: H04N19/11 ,  H04N19/597 ,  H04N19/196 ,  H04N19/70 ,  H04N19/593 ,  H04N19/14 ,  H04N19/187 ,  H04N19/463 ,  H04N19/91

CPC classification number: H04N19/11 ,  H04N19/14 ,  H04N19/187 ,  H04N19/197 ,  H04N19/463 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70 ,  H04N19/91

Abstract: Techniques are described for encoding and decoding depth data for three-dimensional (3D) video data represented in a multiview plus depth format using depth coding modes that are different than high-efficiency video coding (HEVC) coding modes. Examples of additional depth intra coding modes available in a 3D-HEVC process include at least two of a Depth Modeling Mode (DMM), a Simplified Depth Coding (SDC) mode, and a Chain Coding Mode (CCM). In addition, an example of an additional depth inter coding mode includes an Inter SDC mode. In one example, the techniques include signaling depth intra coding modes used to code depth data for 3D video data in a depth modeling table that is separate from the HEVC syntax. In another example, the techniques of this disclosure include unifying signaling of residual information of depth data for 3D video data across two or more of the depth coding modes.

Abstract translation: 描述了使用与高效率视频编码（HEVC）编码模式不同的深度编码模式来编码和解码以多视图加深度格式表示的三维（3D）视频数据的深度数据的编码和解码技术。 在3D-HEVC过程中可用的附加深度帧内编码模式的示例包括深度建模模式（DMM），简化深度编码（SDC）模式和链式编码模式（CCM）中的至少两个。 此外，附加深度编码模式的示例包括Inter SDC模式。 在一个示例中，这些技术包括用于在与HEVC语法分离的深度建模表中用于对3D视频数据的深度数据进行编码的信令深度帧内编码模式。 在另一示例中，本公开的技术包括跨越两个或更多个深度编码模式统一用于3D视频数据的深度数据的残留信息的信令。

公开(公告)号：US09491461B2

公开(公告)日：2016-11-08

申请号：US14037738

申请日：2013-09-26

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Vadim Seregin ,  Li Zhang ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N19/51 ,  H04N19/52 ,  H04N19/30 ,  H04N19/61 ,  H04N19/31 ,  H04N19/58 ,  H04N19/513

CPC classification number: H04N19/521 ,  H04N19/30 ,  H04N19/31 ,  H04N19/52 ,  H04N19/58 ,  H04N19/61

Abstract: In one example, a device includes a video coder configured to determine a first co-located reference picture for generating a first temporal motion vector predictor candidate for predicting a motion vector of a current block, determine a second co-located reference picture for generating a second temporal motion vector predictor candidate for predicting the motion vector of the current block, determine a motion vector predictor candidate list that includes at least one of the first temporal motion vector predictor candidate and the second temporal motion vector predictor candidate, select a motion vector predictor from the motion vector predictor candidate list, and code the motion vector of the current block relative to the selected motion vector predictor.

Abstract translation: 在一个示例中，设备包括视频编码器，该视频编码器被配置为确定用于生成用于预测当前块的运动矢量的第一时间运动矢量预测器候选的第一同位置参考图像，确定第二同位置参考图像以产生 用于预测当前块的运动矢量的第二时间运动矢量预测器候选，确定包括第一时间运动矢量预测器候选和第二时间运动矢量预测器候选中的至少一个的运动矢量预测器候选列表，选择运动矢量预测器 并且对当前块相对于所选择的运动矢量预测器的运动矢量进行编码。