公开(公告)号：US20150023422A1

公开(公告)日：2015-01-22

申请号：US14332105

申请日：2014-07-15

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/11 ,  H04N19/182 ,  H04N19/14 ,  H04N19/583 ,  H04N19/51

CPC classification number: H04N19/182 ,  H04N19/105 ,  H04N19/11 ,  H04N19/14 ,  H04N19/159 ,  H04N19/174 ,  H04N19/51 ,  H04N19/513 ,  H04N19/597 ,  H04N19/70

Abstract: In one example, a device for coding (e.g., encoding or decoding) video data includes a memory configured to store video data and a video coder configured to determine a value for an advanced residual prediction (ARP) weighting factor of a current block of the video data and to skip coding of an illumination compensation syntax element for the current block and to code the current block when the value of the ARP weighting factor is not equal to zero. The video coder may further be configured to code the illumination compensation syntax element for the current block and code the current block based at least in part on the value of the illumination compensation syntax element when the value of the ARP weighting factor is equal to zero.

Abstract translation: 在一个示例中，用于编码（例如，编码或解码）视频数据的设备包括被配置为存储视频数据的存储器和视频编码器，视频编码器被配置为确定当前块的当前块的高级剩余预测（ARP）加权因子的值 视频数据，并跳过当前块的照明补偿语法元素的编码，并且当ARP加权因子的值不等于零时对当前块进行编码。 视频编码器还可以被配置为当ARP加权因子的值等于零时，至少部分地基于照明补偿语法元素的值，为当前块编码照明补偿语法元素并对当前块进行编码。

公开(公告)号：US20150003529A1

公开(公告)日：2015-01-01

申请号：US14316145

申请日：2014-06-26

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Li Zhang ,  Ying Chen

IPC: H04N19/597 ,  H04N19/56 ,  H04N19/51

CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/70

Abstract: An example video coding device is configured to compare an inter-view predicted motion vector candidate (IPMVC) to a motion vector inheritance (MVI) candidate, where the IPMVC and the MVI candidate are each associated with a block of video data in a dependent depth view, and where the IPMVC is generated from a corresponding block of video data in a base depth view. The video coding device may be further configured to perform one of adding the IPMVC to a merge candidate list based on the IPMVC being different from the MVI candidate, or omitting the IPMVC from the merge candidate list based on the IPMVC being identical to the MVI candidate.

Abstract translation: 示例性视频编码设备被配置为将视频间预测运动矢量候选（IPMVC）与运动矢量继承（MVI）候选者进行比较，其中IPMVC和MVI候选者各自与依赖深度的视频数据块相关联 视图，以及在基本深度视图中从相应的视频数据块生成IPMVC的位置。 视频编码装置还可以被配置为基于与MVI候选者不同的IPMVC来将IPMVC添加到合并候选列表中，或者基于与MVI候选者相同的IPMVC从合并候选列表中省略IPMVC 。

公开(公告)号：US20140267605A1

公开(公告)日：2014-09-18

申请号：US14216232

申请日：2014-03-17

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/597

Abstract: A device for coding three-dimensional video data includes a video coder configured to determine a first block of a first texture view is to be coded using a block-based view synthesis mode; locate, in a depth view, a first depth block that corresponds to the first block of the first texture view; determine depth values of two or more corner positions of the first depth block; based on the depth values, derive a disparity vector for the first block; using the disparity vector, locate a first block of a second texture view; and, inter-predict the first block of the first texture view using the first block of the second texture view.

Abstract translation: 一种用于对三维视频数据进行编码的设备包括：视频编码器，被配置为使用基于块的视图合成模式来确定要编码的第一纹理图像的第一块; 在深度视图中定位与第一纹理视图的第一块对应的第一深度块; 确定第一深度块的两个或多个角位置的深度值; 基于深度值，导出第一块的视差向量; 使用视差向量，定位第二纹理视图的第一块; 并且使用第二纹理视图的第一块来相互预测第一纹理视图的第一块。

公开(公告)号：US20140241431A1

公开(公告)日：2014-08-28

申请号：US14189679

申请日：2014-02-25

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Jewon Kang

IPC: H04N19/583 ,  H04N19/597 ,  H04N19/51

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：US20140071235A1

公开(公告)日：2014-03-13

申请号：US14024058

申请日：2013-09-11

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/32

CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/70

Abstract: This disclosure describes techniques for improving coding efficiency of motion prediction in multiview and 3D video coding. In one example, a method of decoding video data comprises deriving one or more disparity vectors for a current block, the disparity vectors being derived from neighboring blocks relative to the current block, converting a disparity vector to one or more of inter-view predicted motion vector candidates and inter-view disparity motion vector candidates, adding the one or more inter-view predicted motion vector candidates and the one or more inter-view disparity motion vector candidates to a candidate list for a motion vector prediction mode, and decoding the current block using the candidate list.

Abstract translation: 本公开描述了用于提高多视图和3D视频编码中运动预测的编码效率的技术。 在一个示例中，解码视频数据的方法包括导出当前块的一个或多个视差矢量，相对于当前块从相邻块导出视差向量，将视差向量转换成视角间预测运动中的一个或多个 矢量候选和视角间视差运动矢量候补，将一个或多个视点间预测运动矢量候选和一个或多个视点间视差运动矢量候选添加到用于运动矢量预测模式的候选列表，并且解码当前 阻止使用候选人名单。

公开(公告)号：US20140049604A1

公开(公告)日：2014-02-20

申请号：US13968140

申请日：2013-08-15

Applicant: QUALCOMM INCORPORATED

Inventor： Ying Chen ,  Li Zhang ,  Adarsh Krishnan Ramasubramonian

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/597 ,  H04N19/70

Abstract: In one example, a video coder, such as a video encoder or a video decoder, is configured to code a value for a layer identifier in a slice header for a current slice in a current layer of multi-layer video data, and, when the value for the layer identifier is not equal to zero, code a first set of syntax elements in accordance with a base video coding standard, and code a second set of one or more syntax elements in accordance with an extension to the base video coding standard. The second set of syntax elements may include a syntax element representative of a position for an identifier of an inter-layer reference picture of a reference layer in a reference picture list, and the video coder may construct the reference picture list such that the identifier of the inter-layer reference picture is located in the determined position.

Abstract translation: 在一个示例中，诸如视频编码器或视频解码器的视频编码器被配置为对当前层中多层视频数据中的当前片段的片标题中的层标识符的值进行编码，并且当 层标识符的值不等于零，根据基本视频编码标准对第一组语法元素进行编码，并且根据对基本视频编码标准的扩展来编码第二组一个或多个语法元素 。 第二组语法元素可以包括表示参考图片列表中参考层的层间参考图片的标识符的位置的语法元素，并且视频编码器可以构建参考图片列表，使得参考图片列表的标识符 层间参考图片位于确定的位置。

公开(公告)号：US20130335522A1

公开(公告)日：2013-12-19

申请号：US13772917

申请日：2013-02-21

Applicant: QUALCOMM INCORPORATED

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/52 ,  H04N19/46 ,  H04N19/597

Abstract: In some example techniques for generating and updating depth map estimates used for inter-view motion prediction and/or inter-view residual prediction for coding multiview video data, each of a plurality of dependent views is associated with a dependent depth view estimate, which may be generated or updated based on coding of the texture data of the dependent view relative to a base view. In such examples, each of the dependent depth map estimates may be warped to the base view to produce a respective one of a plurality of base depth map estimates. Each dependent depth map estimate and the respective base depth map estimate for a depth map estimate pair associated with the respective one of the plurality of dependent views.

Abstract translation: 在用于生成和更新用于视频间运动预测和/或用于编码多视点视频数据的视频间残差预测的深度图估计的一些示例性技术中，多个从属视图中的每一个与依赖深度视图估计相关联， 基于相对于基本视图的从属视图的纹理数据的编码来生成或更新。 在这样的示例中，依赖深度图估计中的每一个可以被扭曲到基本视图以产生多个基本深度图估计中的相应的一个。 每个相关深度图估计和与多个从属视图中的相应一个相关联的深度图估计对的相应基准深度图估计。

公开(公告)号：US20240357131A1

公开(公告)日：2024-10-24

申请号：US18757156

申请日：2024-06-27

Applicant: QUALCOMM Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Li Zhang ,  Xiang Li ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593 ,  H04N19/186

CPC classification number: H04N19/159 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593 ,  H04N19/186

Abstract: Techniques are described for using an inter-intra-prediction block. A video coder may generate a first prediction block according to an intra-prediction mode and generate a second prediction block according to an inter-prediction mode. The video coder may weighted combine, such as based on the intra-prediction mode, the two prediction blocks to generate an inter-intra-prediction block (e.g., final prediction block). In some examples, an inter-intra candidate is identified in a list of candidate motion vector predictors, and an inter-intra-prediction block is used based on identification of the inter-intra candidate in the list of candidate motion vector predictors.

公开(公告)号：US11743509B2

公开(公告)日：2023-08-29

申请号：US17650935

申请日：2022-02-14

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/96 ,  H04N19/70 ,  H04N19/593 ,  H04N19/11 ,  H04N19/463 ,  H04N19/186 ,  H04N19/46 ,  H04N19/124 ,  H04N19/91

CPC classification number: H04N19/96 ,  H04N19/11 ,  H04N19/186 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/124 ,  H04N19/91

Abstract: An example device includes a memory and processing circuitry in communication with the memory. The processing circuitry of a device is configured to form a most probable mode (MPM) candidate list for a chroma block of the video data stored to the memory, such that the MPM candidate list includes one or more derived modes (DMs) associated with a luma block of the video data associated with the chroma block, and a plurality of luma prediction modes that can be used for coding luminance components of the video data. The processing circuitry is further configured to select a mode from the MPM candidate list, and to code the chroma block according to the mode selected from the MPM candidate list.

公开(公告)号：US11496243B1

公开(公告)日：2022-11-08

申请号：US17307835

申请日：2021-05-04

Applicant: QUALCOMM Incorporated

Inventor： Shravan Kumar Reddy Garlapati ,  Afshin Haftbaradaran ,  Alessandro Risso ,  Li Zhang

IPC: H04L1/00 ,  H04W72/04 ,  H04W76/11

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a receiving node may determine a cyclic redundancy check (CRC) based at least in part on log-likelihood ratios (LLRs) associated with downlink control information (DCI) received from a transmitting node. The receiving node may perform a full unmasking of the CRC using a radio network temporary identifier (RNTI) based at least in part on a descrambling of the CRC with the RNTI, wherein a number of bits associated with the RNTI is associated with a number of bits associated with the CRC. The receiving node may initiate an early termination of a decoding of the LLRs based at least in part on the full unmasking of the CRC. Numerous other aspects are described.