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    USING SUBSTITUTE MOTION INFORMATION WHEN CODING VIDEO DATA
    342.
    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
    343.
    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.

    LOW COMPLEXITY NN-BASED IN LOOP FILTER ARCHITECTURES WITH SEPARABLE CONVOLUTION
    344.
    发明申请
    LOW COMPLEXITY NN-BASED IN LOOP FILTER ARCHITECTURES WITH SEPARABLE CONVOLUTION 有权

    公开(公告)号：US20240414378A1

    公开(公告)日：2024-12-12

    申请号：US18738842

    申请日：2024-06-10

    Applicant: QUALCOMM Incorporated

    Inventor： Yun Li ,  Dmytro Rusanovskyy ,  Marta Karczewicz

    IPC: H04N19/80 ,  H04N19/172

    Abstract: Example techniques for filtering video data are described. An example device for at least one of encoding or decoding video data includes one or more memories configured to store the video data and one or more processors. The one or more processors are configured to receive a picture of video data and reconstruct the picture of video data. The one or more processors are also configured to apply a neural network (NN)-based filter to the reconstructed picture of video data. The NN-based filter includes a unified filter. The unified filter includes a head block, a transition block, one or more backbone blocks, and a tail block. At least one of the head block, the transition block, the one or more backbone blocks, or the tail block includes a Canonical Polyadic (CP) decomposition with separable convolution.

    Intra block copy prediction restrictions in video coding
    345.
    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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