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    IMPLICIT MASKED BLENDING MODE IMPROVEMENT WITH HIGH LEVEL SYNTAX
    81.
    发明申请
    IMPLICIT MASKED BLENDING MODE IMPROVEMENT WITH HIGH LEVEL SYNTAX 有权

    公开(公告)号：US20250008137A1

    公开(公告)日：2025-01-02

    申请号：US18241755

    申请日：2023-09-01

    Applicant: Tencent America LLC

    Inventor： Han GAO ,  Xin Zhao ,  Liang Zhao ,  Jing Ye ,  Shan Liu

    IPC: H04N19/44 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70

    Abstract: A computing system receives a video bitstream comprising a current picture that includes a first block. The system determines that the first block is encoded using a first reference block and a second reference block. The system identifies a high-level syntax (HLS) flag in the video bitstream that indicates a weighting scheme for using the first and second reference blocks. The system reconstructs the first block using a first set of weighting factors for reference values from the first reference and second reference blocks when the HLS flag has a first value. The system reconstructs the first block using a second set of weighting factors for the reference values from the first and second reference blocks when (i) the HLS flag has a second value and (ii) at least one of the first and second reference blocks is at least partially outside of a corresponding reference boundary.

    SYSTEMS AND METHODS FOR EXTENDED MULTI-RESIDUE BLOCK CODING
    82.
    发明申请
    SYSTEMS AND METHODS FOR EXTENDED MULTI-RESIDUE BLOCK CODING 有权

    公开(公告)号：US20250008123A1

    公开(公告)日：2025-01-02

    申请号：US18677729

    申请日：2024-05-29

    Applicant: Tencent America LLC

    Inventor： Tianqi LIU ,  Liang ZHAO ,  Xin ZHAO ,  Jing YE ,  Han GAO ,  Shan LIU

    IPC: H04N19/176 ,  H04N19/122 ,  H04N19/124 ,  H04N19/13

    Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving a video bitstream comprising a plurality of coding blocks including a current block. The method includes deriving a first residual block for the current block using a first set of parameters. The method includes deriving a second residual block for the current block using a second set of parameters, where the second set of parameters is independent of the first set of parameters. The method includes deriving a combined residual block using the first residual block and the second residual block. The method also includes reconstructing the current block using the combined residual block.

    SYSTEMS AND METHODS FOR BLEND INTRA MODE CODING
    83.
    发明申请
    SYSTEMS AND METHODS FOR BLEND INTRA MODE CODING 有权

    公开(公告)号：US20240380889A1

    公开(公告)日：2024-11-14

    申请号：US18474523

    申请日：2023-09-26

    Applicant: Tencent America LLC

    Inventor： Jing YE ,  Xin ZHAO ,  Liang ZHAO ,  Han GAO ,  Shan LIU

    IPC: H04N19/132 ,  H04N19/105 ,  H04N19/176

    Abstract: The various implementations described herein include methods and systems for encoding and decoding video. In one aspect, a method of video decoding includes receiving video data comprising a plurality of blocks, including a first block, from a video bitstream, where the first block is encoded in one of a plurality of smooth modes. The method also includes identifying a set of reference samples for the first block and deriving a first prediction value for the first block, where the first prediction value is derived from a second prediction value, the second prediction value is derived without a division or shift operation, and a final step in deriving the first prediction value comprises a division or shift operation. The method further includes decoding the first block using the first prediction value.

    MULTIPLE MODELS FOR BLOCK ADAPTIVE WEIGHTED PREDICTION
    84.
    发明申请
    MULTIPLE MODELS FOR BLOCK ADAPTIVE WEIGHTED PREDICTION 有权

    公开(公告)号：US20240373050A1

    公开(公告)日：2024-11-07

    申请号：US18497336

    申请日：2023-10-30

    Applicant: Tencent America LLC

    Inventor： Liang ZHAO ,  Biao WANG ,  Xin ZHAO ,  Jing YE ,  Han GAO ,  Shan LIU

    IPC: H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

    Abstract: This disclosure relates to video coding/decoding. One method performed by a decoder includes: receiving a current block and a reference block; grouping samples in the current block into at least a first class and a second class based on a predefined criteria, the first class and the second class being associated with a first linear model and a second linear model, respectively, wherein the first linear model has at least a scale factor α1 or an offset β1, the second linear model has at least a scale factor α2 or an offset β2; determining the first and the second linear model; predicting samples in the first class based on the reference block and the first linear model; predicting samples in the second class based on the reference block and the second linear model; reconstructing the current block based on predicted samples in the first class and the second class.

    ADJACENT SPATIAL MOTION VECTOR PREDICTOR CANDIDATES IMPROVEMENT
    85.
    发明申请
    ADJACENT SPATIAL MOTION VECTOR PREDICTOR CANDIDATES IMPROVEMENT 有权

    公开(公告)号：US20240372996A1

    公开(公告)日：2024-11-07

    申请号：US18777385

    申请日：2024-07-18

    Applicant: Tencent America LLC

    Inventor： Han GAO ,  Xin Zhao ,  Liang Zhao ,  Shan Liu

    IPC: H04N19/105 ,  H04N19/154 ,  H04N19/176 ,  H04N19/88

    Abstract: An example method of video decoding includes receiving a video bitstream comprising a plurality of blocks, including a current block. When one or more predefined conditions are met, inserting one or more motion vector (MV) candidates from a MV bank into a motion vector prediction (MVP) list before inserting one or more derived candidates. When the one or more predefined conditions are not met, inserting the one or more MV candidates from the MV bank into the MVP list after inserting the one or more derived candidates. The method also includes decoding the current block using an MV from the MVP list.

    MULTIPLE LISTS FOR BLOCK BASED WEIGHTING FACTORS
    86.
    发明公开
    MULTIPLE LISTS FOR BLOCK BASED WEIGHTING FACTORS 审中-公开

    公开(公告)号：US20240323346A1

    公开(公告)日：2024-09-26

    申请号：US18217893

    申请日：2023-07-03

    Applicant: Tencent America LLC

    Inventor： Liang ZHAO ,  Xin ZHAO ,  Han GAO ,  Biao WANG ,  Xiaozhong XU ,  Shan LIU

    IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

    CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

    Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving a video bitstream including a current coding block of a current image frame and determining that the current coding block is to be predicted in a weighted bi-prediction (WBP) mode. The method further includes in response to the current coding block being predicted in the WBP mode, determining that the current coding block is associated with two bi-prediction blocks and identifying a plurality of distinct weighting factor lists including at least a first list of positive weighting factors and a second list of mixed weighting factors. The method further includes selecting one of the weighing factor lists, identifying a first weighting factor from the weighing factor lists, and reconstructing the current image frame, including determining the current coding block by combining the two bi-prediction blocks based on the first weighting factor.

    REFINED INTRA PREDICTION ANGLES
    87.
    发明公开
    REFINED INTRA PREDICTION ANGLES 审中-公开

    公开(公告)号：US20240275998A1

    公开(公告)日：2024-08-15

    申请号：US18215284

    申请日：2023-06-28

    Applicant: Tencent America LLC

    Inventor： Liang ZHAO ,  Xin ZHAO ,  Jing YE ,  Han GAO ,  Shan LIU

    IPC: H04N19/44 ,  H04N19/176 ,  H04N19/593

    CPC classification number: H04N19/44 ,  H04N19/176 ,  H04N19/593

    Abstract: Processing circuitry receives, from a coded video bitstream, coded information of a current coding block in a current picture. The coded information is indicative of a directional intra prediction of the current coding block. The processing circuitry determines an index to an entry in an angle-to-offset mapping lookup table according to the coded information of current coding block. The angle-to-offset mapping lookup table stores a set of derivative values that are associated with angles, the set of derivative values includes two or more integers that are powers of two. The processing circuitry accesses the entry to obtain a derivative value, determines, for a pixel in the current coding block, an offset indicative of a reference location in the current picture according to the derivative value and a location of the pixel, and reconstructs the pixel in the current coding block based on the reference location in the current picture.

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