公开(公告)号：US09781416B2

公开(公告)日：2017-10-03

申请号：US14189648

申请日：2014-02-25

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Jewon Kang

IPC: H04N19/51 ,  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：US09762903B2

公开(公告)日：2017-09-12

申请号：US13906264

申请日：2013-05-30

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang ,  Jianle Chen

IPC: H04N19/50 ,  H04N19/70 ,  H04N19/30 ,  H04N19/597

CPC classification number: H04N19/30 ,  H04N19/597 ,  H04N19/70

Abstract: A video encoder generates a syntax element that indicates whether a video unit of a current picture is predicted from an external picture. The external picture is in a different layer than the current picture. Furthermore, the video encoder outputs a video data bitstream that includes a representation of the syntax element. The video data bitstream may or may not include a coded representation of the external picture. A video decoder obtains the syntax element from the video data bitstream. The video decoder uses the syntax element in a process to reconstruct video data of a portion of the video unit.

公开(公告)号：US09674544B2

公开(公告)日：2017-06-06

申请号：US14552129

申请日：2014-11-24

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Ye-Kui Wang ,  Adarsh Krishnan Ramasubramonian ,  Ying Chen

IPC: H04N19/513 ,  H04N19/597 ,  H04N19/70 ,  H04N19/46 ,  H04N19/30 ,  H04N19/68 ,  H04N19/80

CPC classification number: H04N19/513 ,  H04N19/30 ,  H04N19/46 ,  H04N19/597 ,  H04N19/68 ,  H04N19/70 ,  H04N19/80

Abstract: In an example, a method of decoding video data includes decoding data that indicates a picture order count (POC) reset for a POC value of a first picture of a first layer of multi-layer video data, wherein the first picture is included in an access unit. The example method also includes, based on the data that indicates the POC reset for the POC value of the first picture and prior to decoding the first picture, decrementing POC values of all pictures stored to a decoded picture buffer (DPB) that precede the first picture in coding order including at least one picture of a second layer of the multi-layer video data.

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：US09635369B2

公开(公告)日：2017-04-25

申请号：US13932960

申请日：2013-07-01

Applicant: Qualcomm Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang

IPC: H04N7/26 ,  H04N19/30 ,  H04N19/597 ,  H04N19/70

CPC classification number: H04N19/13 ,  H04N19/117 ,  H04N19/124 ,  H04N19/184 ,  H04N19/30 ,  H04N19/51 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70

Abstract: A video coder can be configured to receive in a video parameter set, one or more syntax elements that include information related to hypothetical reference decoder (HRD) parameters; receive in the video data a first sequence parameter set that includes a first syntax element identifying the video parameter set; receive in the video data a second sequence parameter set that includes a second syntax element identifying the video parameter set; and, code, based on the one or more syntax elements, a first set of video blocks associated with the first parameter set and second set of video blocks associated with the second parameter set.

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：US09565431B2

公开(公告)日：2017-02-07

申请号：US13776140

申请日：2013-02-25

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui Wang ,  Ying Chen

IPC: H04N19/70 ,  H04N19/44 ,  H04N19/46

CPC classification number: H04N19/44 ,  H04N19/46 ,  H04N19/70

Abstract: As one example, a method of coding video data includes storing one or more decoding units of video data in a coded picture buffer (CPB). The method further includes obtaining a respective buffer removal time for the one or more decoding units. The method further includes removing the decoding units from the CPB in accordance with the obtained buffer removal time for each of the decoding units. The method further includes determining whether the CPB operates at access unit level or sub-picture level. The method further includes coding video data corresponding to the removed decoding units. If the CPB operates at access unit level, coding the video data comprises coding access units comprised in the decoding units. If the CPB operates at sub-picture level, coding the video data comprises coding subsets of access units comprised in the decoding units.

Abstract translation: 作为一个示例，编码视频数据的方法包括将视频数据的一个或多个解码单元存储在编码图像缓冲器（CPB）中。 该方法还包括为一个或多个解码单元获得相应的缓冲器去除时间。 该方法还包括根据获得的每个解码单元的缓冲器去除时间从CPB中去除解码单元。 该方法还包括确定CPB是以存取单元级别还是副图像级别操作。 该方法还包括编码与去除的解码单元对应的视频数据。 如果CPB在接入单元级别操作，则对视频数据进行编码包括解码单元中包括的编码存取单元。 如果CPB在子图像级别操作，则对视频数据进行编码包括包含在解码单元中的访问单元的编码子集。

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：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。