公开(公告)号：US20160373741A1

公开(公告)日：2016-12-22

申请号：US15184033

申请日：2016-06-16

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/70 ,  H04N19/593

CPC classification number: H04N19/11 ,  H04N19/13 ,  H04N19/136 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91

Abstract: A device includes one or more processors configured to derive, from among a plurality of intra prediction modes, M most probable modes (MPMs) for intra prediction of a block of video data. A syntax element indicating whether a MPM index or a non-MPM index is used to indicate a selected intra prediction mode of the plurality of intra prediction modes for intra prediction of the block of video data is decoded. Based on the indicated one of the MPM index or the non-MPM index being the MPM index, the one or more processors select, for each of one or more context-modeled bins of the MPM index, based on intra prediction modes used to decode one or more neighboring blocks, a context index for the context-modeled bin. The one or more processors reconstruct the block of video data based on the selected intra prediction mode.

Abstract translation: 一种设备包括被配置为从多个帧内预测模式中导出用于视频数据块的帧内预测的M个最可能模式（MPM）的一个或多个处理器。 解码表示MPM索引或非MPM索引是否用于指示用于视频数据块的帧内预测的多个帧内预测模式的所选帧内预测模式的语法元素。 基于所指示的一个MPM索引或非MPM索引作为MPM索引，一个或多个处理器针对MPM索引的一个或多个上下文建模的存储体中的每一个，基于用于解码的帧内预测模式来选择 一个或多个相邻块，用于上下文建模的仓的上下文索引。 一个或多个处理器基于所选择的帧内预测模式重构视频数据块。

公开(公告)号：US20160219283A1

公开(公告)日：2016-07-28

申请号：US15006994

申请日：2016-01-26

Applicant: QUALCOMM Incorporated

Inventor： Jianle Chen ,  Hongbin Liu ,  Ying Chen ,  Li Zhang ,  Xiang Li ,  Xin Zhao ,  Marta Karczewicz

IPC: H04N19/186 ,  H04N19/65 ,  H04N19/52 ,  H04N19/593 ,  H04N19/96 ,  H04N19/13 ,  H04N19/124 ,  H04N19/105 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/186 ,  H04N19/105 ,  H04N19/463 ,  H04N19/593

Abstract: A system and method for encoding and decoding video data. A predicted residual signal of a target color component is determined as a function of one or more linear parameters of a linear model and of a residual signal of a source color component. A residual signal of the target color component is determined as a function of a remaining residual signal of the target color component and of the predicted residual signal of the target color component.

Abstract translation: 一种用于对视频数据进行编码和解码的系统和方法。 根据线性模型的一个或多个线性参数和源颜色分量的残留信号来确定目标颜色分量的预测残差信号。 根据目标颜色成分的剩余残留信号和目标色彩分量的预测残差信号确定目标色彩分量的残差信号。

公开(公告)号：US20160029038A1

公开(公告)日：2016-01-28

申请号：US14773161

申请日：2013-03-15

Applicant: Xin ZHAO ,  Li ZHANG ,  Ying CHEN ,  QUALCOMM INCORPORATED

Inventor： Xin Zhao ,  Li Zhang ,  Ying Chen

IPC: H04N19/50 ,  H04N19/61 ,  H04N19/182 ,  H04N19/176 ,  H04N19/124 ,  H04N19/119

CPC classification number: H04N19/50 ,  H04N19/11 ,  H04N19/119 ,  H04N19/124 ,  H04N19/176 ,  H04N19/182 ,  H04N19/597 ,  H04N19/61

Abstract: In an example, a process for coding video data includes determining a partitioning pattern for a block of depth values comprising assigning one or more samples of the block to a first partition and assigning one or more other samples of the block to a second partition. The process also includes determining a predicted value for at least one of the first partition and the second partition based on the determined partition pattern. The process also includes coding the at least one of the first partition and the second partition based on the predicted value.

Abstract translation: 在一个示例中，用于对视频数据进行编码的过程包括确定深度值块的分割模式，包括将块的一个或多个采样分配给第一分区，并将该块的一个或多个其它样本分配给第二分区。 该过程还包括基于所确定的分区模式来确定第一分区和第二分区中的至少一个的预测值。 该过程还包括基于预测值对第一分区和第二分区中的至少一个进行编码。

公开(公告)号：US12206864B2

公开(公告)日：2025-01-21

申请号：US16577938

申请日：2019-09-20

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Marta Karczewicz ,  Xin Zhao

IPC: H04N19/159 ,  H04N19/11 ,  H04N19/117 ,  H04N19/126 ,  H04N19/13 ,  H04N19/14 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82

Abstract: A method of decoding video data including, receiving a first block of video data, receiving a first syntax element indicating if a coding mode is to be used for the first block of video data in the case that the first block of video data is associated with a number of non-zero transform coefficients greater than or equal to a threshold, explicitly decoding a value of the received first syntax element, and applying the coding mode to the first block of video data in accordance with a value of the first syntax element.

公开(公告)号：US20240137556A1

公开(公告)日：2024-04-25

申请号：US18534336

申请日：2023-12-08

Applicant: QUALCOMM Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Xin Zhao ,  Marta Karczewicz

IPC: H04N19/52 ,  H04N19/109 ,  H04N19/147 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/54 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/52 ,  H04N19/109 ,  H04N19/147 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/54 ,  H04N19/70 ,  H04N19/96

Abstract: A device for video decoding can be configured to obtain, from a syntax structure in a bitstream comprising an encoded representation of the video data, a syntax element indicating whether 6-parameter affine prediction is enabled for blocks corresponding to the syntax structure, wherein the blocks corresponding to the syntax structure comprise a first block; based on the syntax element indicating that the 6-parameter affine prediction is enabled for the blocks corresponding to the syntax structure, use the 6-parameter affine prediction to generate a predictive block for the first block; and use the predictive block and residual data to reconstruct the first block.

公开(公告)号：US20220385906A1

公开(公告)日：2022-12-01

申请号：US17817894

申请日：2022-08-05

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Vadim Seregin ,  Marta Karczewicz ,  Jianle Chen

IPC: H04N19/124 ,  H04N19/61 ,  H04N19/176 ,  H04N19/12 ,  H04N19/103

Abstract: Example techniques are described to illustrate multiple transform applied for Intra prediction residual. It may be used in the context of advanced video codecs, such as extensions of HEVC or the next generation of video coding standards. A video encoder and a video decoder may select transform subsets that each identify one or more candidate transforms. The video encoder and the video decoder may determine transforms from the selected transform subsets.

公开(公告)号：US11431968B2

公开(公告)日：2022-08-30

申请号：US16670759

申请日：2019-10-31

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Nan Hu ,  Wei-Jung Chien ,  Marta Karczewicz ,  Xin Zhao ,  Vijayaraghavan Thirumalai

IPC: H04N19/00 ,  H04N19/11 ,  H04N19/157 ,  H04N19/463 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/10 ,  H04N19/103 ,  H04N19/105 ,  H04N19/112 ,  H04N19/122 ,  H04N19/129 ,  H04N19/149 ,  H04N19/167 ,  H04N19/169 ,  H04N19/182

Abstract: A video coder determines a first block of the video data is intra mode coded; based on a first height and the first width of the first block, identifies a group of N available intra prediction modes for the first block of video data; selects from the group of N available intra prediction modes, a first intra prediction mode used to code the first block of the video data; and codes the first block using the first intra prediction mode. A video coder generates a first most probable mode (MPM) candidate list for the block; codes a first flag indicating an actual intra prediction mode used to code the block is not included in the first MPM candidate list; generates a second MPM candidate list by deriving at least one candidate intra prediction mode based on an intra prediction mode in the first MPM candidate list.

公开(公告)号：US11095922B2

公开(公告)日：2021-08-17

申请号：US15665492

申请日：2017-08-01

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/82 ,  H04N19/157 ,  H04N19/136 ,  H04N19/176 ,  H04N19/186 ,  H04N19/117 ,  H04N19/122 ,  H04N19/147 ,  H04N19/17 ,  H04N19/18

Abstract: The present disclosure provides various techniques related to adaptive loop filtering (ALF), and particular to geometry transformation-based ALF (GALF). In an aspect, a method for decoding video data includes receiving an encoded bitstream having coded video data from which reconstructed video units are generated, identifying multiple filter supports for the reconstructed video units, and filtering the reconstructed video units using the respective multiple filter supports to produce a decoded video output. Another method includes enabling block-level control of ALF of chroma components for the reconstructed video units, performing, for the reconstructed video units, the block-level ALF for the chroma components when ALF is enabled for one video block and skip performing the block-level ALF for the chroma components when ALF is disabled for another video block, and generating, based on the enabled block-level control of ALF, a decoded video output. Related devices, means, and computer-readable medium are also described.

公开(公告)号：US11082703B2

公开(公告)日：2021-08-03

申请号：US16715756

申请日：2019-12-16

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Xin Zhao ,  Amir Said ,  Marta Karczewicz ,  Nan Hu ,  Wei-Jung Chien ,  Vijayaraghavan Thirumalai

IPC: H04N19/11 ,  H04N19/159 ,  H04N19/463 ,  H04N19/176 ,  H04N19/91 ,  H04N19/157 ,  H04N19/593 ,  H04N1/417 ,  H04N5/926 ,  H04N9/804 ,  H04N9/808

Abstract: A device for coding video data is configured to determine that a current block of video data is coded using an intra prediction mode; add an intra prediction mode of a first neighboring block of the current block to a most probable mode candidate list for the current block; add an intra prediction mode for a second neighboring block of the current block to the most probable mode candidate list for the current block; add an intra prediction mode for a third neighboring block of the current block to the most probable mode candidate list for the current block; and code the current block of video data using an intra prediction mode.

公开(公告)号：US10805641B2

公开(公告)日：2020-10-13

申请号：US15987560

申请日：2018-05-23

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Xin Zhao ,  Marta Karczewicz

IPC: H04B1/66 ,  H04N19/70 ,  H04N19/11 ,  H04N19/12 ,  H04N19/117 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/593 ,  H04N19/119

Abstract: A method of decoding video data includes receiving a block of video data, determining an intra prediction mode for the block of video data, and determining whether or not to use a position-dependent prediction combination (PDPC) mode to decode the block of video data based at least on the determined intra prediction mode. The method may also include receiving a syntax element associated with a primary transform or a secondary transform used for a block of video data, determining a usage of one or more video coding tools based on a value of the syntax element, the one or more video coding tools being video coding techniques other than the primary transform or secondary transform, and applying the one or more coding tools to the block of video data based on the determined usage.