公开(公告)号：US20150085929A1

公开(公告)日：2015-03-26

申请号：US14497128

申请日：2014-09-25

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Li Zhang

IPC: H04N19/513

CPC classification number: H04N19/53 ,  H04N19/197 ,  H04N19/52 ,  H04N19/56 ,  H04N19/597 ,  H04N19/96

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.

Abstract translation: 描述了用于在HEVC和3D-HEVC中的视频编码的基于子预测单元（PU）的运动预测的技术。 在一个示例中，这些技术包括高级时间运动矢量预测（TMVP）模式，用于预测可以允许运动矢量细化的单层编码中的PU的子PU。 高级TMVP模式包括至少在两个阶段中确定PU的运动矢量，以导出PU的运动信息，其包括PU的每个子PU的不同的运动矢量和参考索引。 在另一示例中，这些技术包括存储针对使用次PU后视合成预测（BVSP）模式预测的当前PU预测的每个子PU导出的分离运动信息，即使在执行运动补偿之后。 为当前PU存储的附加运动信息可以用于预测当前PU是相邻块的后续PU。

公开(公告)号：US20150078450A1

公开(公告)日：2015-03-19

申请号：US14483983

申请日：2014-09-11

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Li Zhang

IPC: H04N19/597 ,  H04N19/70 ,  H04N19/51

CPC classification number: H04N19/513 ,  H04N19/52 ,  H04N19/56 ,  H04N19/577 ,  H04N19/597 ,  H04N19/70

Abstract: Techniques for decoding video data include receiving residual data corresponding to a block of video data, wherein the block of video data is encoded using asymmetric motion partitioning, is uni-directionally predicted using backward view synthesis prediction (BVSP), and has a size of 16×12, 12×16, 16×4 or 4×16, partitioning the block of video data into sub-blocks, each sub-block having a size of 8×4 or 4×8, deriving a disparity motion vector for each of the sub-blocks from a corresponding depth block in a depth picture corresponding to a reference picture, synthesizing a respective reference block for each of the sub-blocks using the respective derived disparity motion vector, and decoding the block of video data by performing motion compensation on each of the sub-blocks using the residual data and the synthesized respective reference blocks.

Abstract translation: 用于对视频数据进行解码的技术包括：接收与视频数据块相对应的残差数据，其中使用非对称运动划分对视频数据块进行编码，使用后视合成预测（BVSP）进行单向预测，并且具有16的大小 ×12,12×16,16×4或4×16，将视频数据块划分为子块，每个子块的大小为8×4或4×8，导出每个子块的视差运动矢量 来自与参考图像相对应的深度图像中的对应深度块的子块，使用各个导出的视差运动矢量合成每个子块的相应参考块，并通过执行运动补偿来解码视频数据块 在使用残差数据和合成的各个参考块的每个子块上。

公开(公告)号：US20150049821A1

公开(公告)日：2015-02-19

申请号：US14458938

申请日：2014-08-13

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Li Zhang

IPC: H04N19/80 ,  H04N13/00 ,  H04N19/176

CPC classification number: H04N19/176 ,  H04N13/122 ,  H04N19/597 ,  H04N19/80 ,  H04N19/82

Abstract: This disclosure describes techniques for in-loop depth map filtering for 3D video coding processes. In one example, a method of decoding video data comprises decoding a depth block corresponding to a texture block, receiving a respective indication of one or more offset values for the decoded depth block, and performing a filtering process on edge pixels of the depth block using at least one of the one or more offset values to create a filtered depth block.

Abstract translation: 本公开描述了用于3D视频编码处理的循环深度图过滤的技术。 在一个示例中，解码视频数据的方法包括对与纹理块对应的深度块进行解码，接收解码深度块的一个或多个偏移值的相应指示，以及使用 所述一个或多个偏移值中的至少一个以产生经滤波的深度块。

公开(公告)号：US20150023423A1

公开(公告)日：2015-01-22

申请号：US14333084

申请日：2014-07-16

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/583 ,  H04N19/176

CPC classification number: H04N19/51 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597

Abstract: Techniques are described for determining a block in a reference picture in a reference view based on a disparity vector for a current block. The techniques start the disparity vector from a bottom-right pixel in a center 2×2 sub-block within the current block, and determine a location within the reference picture to which the disparity vector refers. The determined block covers the location referred to by the disparity vector based on the disparity vector starting from the bottom-right pixel in the center 2×2 sub-block within the current block.

Abstract translation: 描述用于基于当前块的视差矢量在参考视图中确定参考图片中的块的技术。 该技术从当前块中的中心2×2子块的右下角像素开始视差矢量，并确定视差矢量所参考的参考图像内的位置。 所确定的块基于从当前块内的中心2×2子块中的右下像素开始的视差矢量来覆盖由视差矢量引用的位置。

公开(公告)号：US20140301454A1

公开(公告)日：2014-10-09

申请号：US14226012

申请日：2014-03-26

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Xin Zhao

IPC: H04N19/593 ,  H04N13/00

CPC classification number: H04N19/593 ,  H04N13/161 ,  H04N19/11 ,  H04N19/463 ,  H04N19/597 ,  H04N19/70 ,  H04N19/91 ,  H04N2213/005

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.

公开(公告)号：US20140254682A1

公开(公告)日：2014-09-11

申请号：US14198442

申请日：2014-03-05

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Li Zhang

IPC: H04N13/00 ,  H04N19/583 ,  H04N19/597

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：US20140184740A1

公开(公告)日：2014-07-03

申请号：US14140961

申请日：2013-12-26

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen

IPC: H04N19/597 ,  H04N19/593 ,  H04N19/51 ,  H04N19/44 ,  H04N19/503

CPC classification number: H04N19/597 ,  H04N19/139 ,  H04N19/159 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/593 ,  H04N19/70

Abstract: When a current view is a dependent texture view, a current coding unit (CU) is not intra coded, and a partitioning mode of the current CU is equal to PART_2N×2N, a video coder obtains, from a bitstream that comprises an encoded representation of the video data, a weighting factor index for the current CU, wherein the current CU is in a picture belonging to a current view. When the current view is not a dependent texture view, or the current CU is intra coded, or the partitioning mode of the current CU is not equal to PART_2N×2N, the video decoder assumes that the weighting factor index is equal to a particular value that indicates that residual prediction is not applied with regard to the current CU.

Abstract translation: 当当前视图是从属纹理视图时，当前编码单元（CU）不被帧内编码，并且当前CU的分割模式等于PART_2N×2N，视频编码器从包含编码表示的比特流 的当前CU的加权因子索引，其中当前CU在属于当前视图的图像中。 当当前视图不是依赖纹理视图，或当前CU被帧内编码，或当前CU的分割模式不等于PART_2N×2N时，视频解码器假定加权因子指数等于特定值 这表示对于当前CU不表示残差预测。

公开(公告)号：US20140176674A1

公开(公告)日：2014-06-26

申请号：US14133994

申请日：2013-12-19

Applicant: QUALCOMM Incorporated

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

IPC: H04N13/00

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：US20140168363A1

公开(公告)日：2014-06-19

申请号：US14104053

申请日：2013-12-12

Applicant: QUALCOMM Incorporated

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

IPC: H04N13/00 ,  H04N19/597 ,  H04N19/11 ,  H04N19/55 ,  H04N19/593 ,  H04N19/44

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：US20140161188A1

公开(公告)日：2014-06-12

申请号：US14098344

申请日：2013-12-05

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/36 ,  H04N7/32 ,  H04N7/26

CPC classification number: H04N19/31 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/136 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/577 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70

Abstract: In an example, a method of coding video data includes determining a location of a temporal reference block indicated by a temporal motion vector to a current block of video data, where the current block and the temporal reference block are located in a first layer of video data. The method also includes interpolating, with a first type of interpolation, a location of a disparity reference block indicated by a disparity vector of the current block, where the disparity reference block is located in a second, different layer, and where the first type of interpolation comprises a bi-linear filter. The method also includes determining a temporal-disparity reference block of the disparity reference block indicated by a combination of the temporal motion vector and the disparity vector, and coding the current block based on the temporal reference block, the disparity reference block, and the temporal-disparity reference block.

Abstract translation: 在一个示例中，视频数据的编码方法包括：将由时间运动矢量指示的时间参考块的位置确定为视频数据的当前块，其中当前块和时间参考块位于第一层视频中 数据。 该方法还包括利用第一类型的内插来插值由当前块的视差向量指示的视差参考块的位置，其中视差参考块位于第二不同层中，并且其中第一类型 插值包括双线性滤波器。 该方法还包括确定由时间运动矢量和视差向量的组合指示的视差参考块的时间 - 视差参考块，并且基于时间参考块，视差参考块和时间参数块对当前块进行编码 二极性参考块。