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    BDOF-BASED INTER PREDICTION METHOD AND DEVICE
    1.
    发明申请
    BDOF-BASED INTER PREDICTION METHOD AND DEVICE 有权

    公开(公告)号：US20250113039A1

    公开(公告)日：2025-04-03

    申请号：US18980816

    申请日：2024-12-13

    Applicant: LG Electronics Inc.

    Inventor： Naeri PARK ,  Junghak NAM ,  Hyeongmoon JANG

    IPC: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

    Abstract: An image decoding method includes: deriving an L0 motion vector and a L1 motion vector of the current block; deriving prediction samples of the current block based on the L0 motion vector and the L1 motion vector; and generating reconstructed samples of the current block based on the prediction samples. Deriving the prediction samples includes applying bi-directional optical flow (BDOF) to the current block based on whether the condition for applying BDOF to the current block is satisfied, and the application condition of the BDOF includes a condition whereby the values of L0 luma weighted prediction flag information and L1 luma weighted prediction flag information are both zero, where the a value of each of the L0 luma weighted prediction flag information and L1 luma weighted prediction flag information being 0 represents that a weight factor for each of a L0 and L1 prediction luma components does not exist, respectively.

    SYNTAX DESIGN METHOD AND APPARATUS FOR PERFORMING CODING BY USING SYNTAX
    2.
    发明申请
    SYNTAX DESIGN METHOD AND APPARATUS FOR PERFORMING CODING BY USING SYNTAX 有权

    公开(公告)号：US20250056051A1

    公开(公告)日：2025-02-13

    申请号：US18926065

    申请日：2024-10-24

    Applicant: LG ELECTRONICS INC.

    Inventor： Hyeongmoon JANG ,  Junghak NAM ,  Jaehyun LIM

    IPC: H04N19/70 ,  H04N19/176 ,  H04N19/52

    Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: decoding, on the basis of a bitstream, an affine flag that indicates whether affine prediction is applicable to a current block and a sub-block TMVP flag that indicates whether a temporal motion vector predictor based on a sub-block of the current block is usable; determining whether to decode a predetermined merge mode flag that indicates whether to apply a predetermined merge mode to the current block, on the basis of the decoded affine flag and the decoded sub-block TMVP flag; deriving prediction samples of the current block on the basis of the determining of whether to decode the predetermined merge mode flag; and generating reconstructed samples of the current block based on the prediction samples of the current block.

    CIIP-BASED PREDICTION METHOD AND DEVICE
    3.
    发明申请
    CIIP-BASED PREDICTION METHOD AND DEVICE 有权

    公开(公告)号：US20240414327A1

    公开(公告)日：2024-12-12

    申请号：US18697617

    申请日：2022-09-30

    Applicant: LG Electronics Inc.

    Inventor： Seethal PALURI ,  Jaehyun LIM ,  Hyeongmoon JANG ,  Seunghwan KIM

    IPC: H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/132 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/503 ,  H04N19/593 ,  H04N19/70

    Abstract: An image decoding method performed by a decoding device includes: obtaining image information including prediction-related information from a bitstream; determining whether combined inter-picture merge and intra-picture prediction (CIIP) is applied to a current block, on the basis of the prediction-related information; deriving a prediction sample of the current block on the basis of it being determined that the CIIP is applied to the current block; and generating a reconstructed sample of the current block on the basis of the prediction sample, wherein the prediction sample of the current block is derived on the basis of an intra prediction sample and an inter prediction sample, wherein the intra prediction sample is derived on the basis of an intra prediction mode, wherein the intra prediction mode is derived on the basis of a decoder side intra mode derivation (DIMD) mode or a template-based inter mode derivation (TIMD) mode.

    METHOD AND APPARATUS FOR PROCESSING VIDEO DATA
    6.
    发明公开
    METHOD AND APPARATUS FOR PROCESSING VIDEO DATA 审中-公开

    公开(公告)号：US20240223750A1

    公开(公告)日：2024-07-04

    申请号：US18604697

    申请日：2024-03-14

    Applicant: LG Electronics Inc.

    Inventor： Hyeongmoon JANG ,  Junghak NAM

    IPC: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

    CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

    Abstract: A method and device for decoding video data are disclosed. More specifically, a method of decoding video data may comprise: configuring a block vector candidate list of a current block to which an intra block copy (IBC) prediction mode is applied, the IBC mode referring to another block in a current picture; and generating a prediction sample of the current block based on a block vector included in the block vector candidate list. Configuring the block vector candidate list comprises: configuring the block vector candidate list from a spatial neighboring block to which the IBC prediction mode is applied; and modifying the block vector candidate list based on an history-based motion vector prediction (HVMP) candidate to which the IBC prediction mode is applied when a number of current candidates of the block vector candidate list is smaller than a maximum candidate number.

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