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    DERIVED INTRA PREDICTION MODES AND MOST PROBABLE MODES IN VIDEO CODING
    121.
    发明申请
    DERIVED INTRA PREDICTION MODES AND MOST PROBABLE MODES IN VIDEO CODING 有权

    公开(公告)号：US20250119548A1

    公开(公告)日：2025-04-10

    申请号：US18982465

    申请日：2024-12-16

    Applicant: QUALCOMM Incorporated

    Inventor： Keming Cao ,  Nan Hu ,  Vadim Seregin ,  Marta Karczewicz

    IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176 ,  H04N19/593

    Abstract: A method of encoding or decoding video data comprises: for each respective intra prediction mode of a plurality of intra prediction modes in a most-probable mode (MPM) list: generating, based on reference samples for a template region and using the respective intra prediction mode, prediction samples for the template region; and determining a cost for the respective intra prediction mode; determining a first intra prediction mode and a second intra prediction mode in the MPM list having lowest costs; determining a preliminary prediction block for the first intra prediction mode and a preliminary prediction block for the second intra prediction mode; generating a prediction block based on a fusion of the preliminary prediction blocks weighted according to a weight for the first intra prediction mode and a weight for the second intra prediction mode.

    CROSS COMPONENT PREDICTION MERGE CANDIDATE DERIVATION AND FUSION IN CHROMA CODING
    122.
    发明申请
    CROSS COMPONENT PREDICTION MERGE CANDIDATE DERIVATION AND FUSION IN CHROMA CODING 有权

    公开(公告)号：US20250119528A1

    公开(公告)日：2025-04-10

    申请号：US18904743

    申请日：2024-10-02

    Applicant: QUALCOMM Incorporated

    Inventor： Po-Han Lin ,  Jian-Liang Lin ,  Yao-Jen Chang ,  Vadim Seregin ,  Marta Karczewicz

    IPC: H04N19/105 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70

    Abstract: A device for decoding encoded video data is configured to determine that a chroma block of the encoded video data is coded in a cross-component prediction (CCP) mode; generate a merge candidate list for the chroma block, wherein the merge candidate list includes at least two prediction candidates generated by different CCP modes and a third prediction candidate, wherein the third prediction candidate comprises a fusion prediction candidate; receive, in the encoded video data, a syntax element set to a value; select a prediction candidate from the merge candidate list based on the value of the syntax element; determine a prediction block for the chroma block based on the selected prediction candidate; determine a decoded block of video data based on the prediction block for the chroma block; and output a decoded picture of video data that includes the decoded block of video data.

    HYBRID INTER BI-PREDICTION IN VIDEO CODING
    123.
    发明申请
    HYBRID INTER BI-PREDICTION IN VIDEO CODING 有权

    公开(公告)号：US20250016326A1

    公开(公告)日：2025-01-09

    申请号：US18741129

    申请日：2024-06-12

    Applicant: QUALCOMM Incorporated

    Inventor： Zhi Zhang ,  Chun-Chi Chen ,  Han Huang ,  Vadim Seregin ,  Marta Karczewicz

    IPC: H04N19/137 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

    Abstract: A video decoder can be configured to determine that a current block of the video data is coded in a bi-prediction inter mode; receive a first syntax element identifying a motion vector predictor from a first candidate list of motion vector predictors; receive a second syntax element identifying a motion vector difference; determine a first motion vector for the current block based on the motion vector predictor and the motion vector difference; determine a second motion vector for the current block from a second list of candidate motion vector predictors based on bilateral matching; and determine a prediction block for the current block using the first motion vector and the second motion vector.

    USING SUBSTITUTE MOTION INFORMATION WHEN CODING VIDEO DATA
    124.
    发明申请
    USING SUBSTITUTE MOTION INFORMATION WHEN CODING VIDEO DATA 有权

    公开(公告)号：US20240430484A1

    公开(公告)日：2024-12-26

    申请号：US18748939

    申请日：2024-06-20

    Applicant: QUALCOMM Incorporated

    Inventor： Hongtao Wang ,  Han Huang ,  Vadim Seregin ,  Nan Hu ,  Yan Zhang ,  Marta Karczewicz

    IPC: H04N19/70 ,  H04N19/117 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04N19/86

    Abstract: An example device for decoding video data includes a memory configured to store video data; and a processing system including one or more processors implemented in circuitry, the processing system being configured to: determine that a previously coded block of video data was coded using uni-prediction mode for which a bi-prediction syntax element is not assigned a value; determine that a current block of the video data is to be coded using a bi-prediction mode and that motion information of the current block is to be predicted from the previously coded block, including from the bi-prediction syntax element of the previously coded block; and in response to the bi-prediction syntax element of the previously coded block not having an assigned value, decode the current block using a substitute value for the bi-prediction syntax element.

    Overlapped block motion compensation
    125.
    发明授权
    Overlapped block motion compensation 有权

    公开(公告)号：US12170758B2

    公开(公告)日：2024-12-17

    申请号：US17534325

    申请日：2021-11-23

    Applicant: QUALCOMM Incorporated

    Inventor： Yao-Jen Chang ,  Jingya Li ,  Vadim Seregin ,  Marta Karczewicz

    IPC: H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/513 ,  H04N19/573

    Abstract: Systems and techniques are provided for overlapped block motion compensation (OBMC). A method can include determining an OBMC mode is enabled for a current subblock of video data; for a neighboring subblock(s) adjacent to the current subblock, determining whether a first, second and third condition are met, the first condition comprising that all reference picture lists for predicting the current subblock are used to predict the neighboring subblock; the second condition comprising that identical reference pictures are used to determine motion vectors associated with the current subblock and the neighboring subblock, and the third condition comprising that a difference between motion vectors of the current subblock and the neighboring subblock do not exceed a threshold; and based on determining that the OBMC mode is enabled and the first, second, and third conditions are met, determining not to use motion information of the neighboring subblock for motion compensation of the current subblock.

    Intra block copy prediction restrictions in video coding
    126.
    发明授权
    Intra block copy prediction restrictions in video coding 有权

    公开(公告)号：US12149707B2

    公开(公告)日：2024-11-19

    申请号：US17817128

    申请日：2022-08-03

    Applicant: QUALCOMM Incorporated

    Inventor： Vadim Seregin ,  Luong Pham Van ,  Wei-Jung Chien ,  Cheng-Teh Hsieh ,  Marta Karczewicz

    IPC: H04N19/159 ,  H04N19/105 ,  H04N19/176 ,  H04N19/96

    Abstract: An example method includes determining, for each respective coding block of a plurality of coding blocks of a current coding tree unit (CTU) of video data in a current picture of video data, a respective search area of a plurality of respective search areas, wherein at least one of the plurality of search areas includes samples of the current picture located outside of the current CTU, and wherein at least one of the plurality of search areas does not include samples of the current picture located outside of the current CTU; selecting, for each respective coding block and from within the respective search area for the respective coding block, a respective predictor block of a plurality of predictor blocks; and reconstructing samples of each respective coding block based on samples included in a corresponding predictor block in the plurality of predictor blocks.

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