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    METHOD AND APPARATUS FOR HANDLING INTERMEDIARY PICTURES OUTPUT IN A NEURAL-NETWORK POST-FILTER GROUP IN SEI MESSAGE FOR CODED BITSTREAM
    1.
    发明申请
    METHOD AND APPARATUS FOR HANDLING INTERMEDIARY PICTURES OUTPUT IN A NEURAL-NETWORK POST-FILTER GROUP IN SEI MESSAGE FOR CODED BITSTREAM 有权

    公开(公告)号：US20250106384A1

    公开(公告)日：2025-03-27

    申请号：US18899462

    申请日：2024-09-27

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry TAN ,  Junghak NAM ,  Jaehyun LIM ,  Seunghwan KIM

    IPC: H04N19/105 ,  H04N19/172 ,  H04N19/70

    Abstract: An image decoding method including obtaining a neural network post-filter (NNPF) group (NNPFG) characteristics (NNPFGC) supplemental enhancement information (SEI) message specifying information related to a group of two or more NNPFs to be applied to image data; obtaining a first list of output images that are output by one or more of the two or more NNPFs; obtaining a number of output images of the first list that are to be included in a final output of images; based on the obtained number being greater than zero, setting one or more indicators for the output images indicating whether each output image is to be included in the final output of images; and based on the first list and the one or more indicators, generating a second list of images that are to be output in the final output of images.

    DMVR-BASED INTER PREDICTION METHOD AND APPARATUS
    2.
    发明申请
    DMVR-BASED INTER PREDICTION METHOD AND APPARATUS 有权

    公开(公告)号：US20250088638A1

    公开(公告)日：2025-03-13

    申请号：US18956744

    申请日：2024-11-22

    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: A video decoding method comprises: deriving L0 and L1 motion vectors of a current block; deriving decoder-side motion vector refinement (DMVR) flag information indicating whether to apply a DMVR to the current block; when the DMVR flag information indicates that the DMVR is to be applied to the current block, deriving refined L0 and L1 motion vectors based on the L0 and L1 motion vectors by applying the DMVR to the current block; deriving prediction samples of the current block based on the refined L0 and L1 motion vectors; and generating reconstructed samples of the current block based on the predicted samples, wherein deriving DMVR flag information comprises deriving the DMVR flag information by applying the DMVR to the current block when the height of the current block is 8 or more, and when the values of L0 and L1 luma weighted prediction flag information are both 0.

    METHOD AND DEVICE FOR CODING INTRA PREDICTION MODE
    3.
    发明申请
    METHOD AND DEVICE FOR CODING INTRA PREDICTION MODE 有权

    公开(公告)号：US20250063180A1

    公开(公告)日：2025-02-20

    申请号：US18724653

    申请日：2022-12-30

    Applicant: LG ELECTRONICS INC.

    Inventor： Sunmi YOO ,  Hyeongmoon JANG ,  Junghak NAM ,  Jangwon CHOI ,  Seunghwan KIM

    IPC: H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

    Abstract: According to the present disclosure, an image decoding method performed by a decoding device includes the steps of acquiring image information including prediction-related information from a bitstream; deriving an intra prediction mode with respect to a current block on the basis of the prediction-related information; generating prediction samples with respect to the current block on the basis of the intra prediction mode with respect to the current block; and generating reconstruction samples with respect to the current block on the basis of the prediction samples with respect to the current block, wherein the intra prediction mode is derived on the basis of whether an upper neighboring block of the current block exists in the same coding tree unit (CTU) as the current block.

    METHOD AND APPARATUS FOR CODING INTRA PREDICTION MODE
    5.
    发明申请
    METHOD AND APPARATUS FOR CODING INTRA PREDICTION MODE 有权

    公开(公告)号：US20240414328A1

    公开(公告)日：2024-12-12

    申请号：US18702283

    申请日：2022-10-21

    Applicant: LG ELECTRONICS INC.

    Inventor： Sunmi YOO ,  Naeri PARK ,  Junghak NAM ,  Hyeongmoon JANG ,  Jangwon CHOI

    IPC: H04N19/11 ,  H04N19/105 ,  H04N19/176

    Abstract: According to the present disclosure, an image decoding method performed by a decoding apparatus comprises the steps of: receiving a bitstream including prediction-related information; configuring a list of MPMs including intra prediction mode candidates for a current block; decoding remaining mode information related to remaining intra prediction modes other than the intra prediction mode candidates included in the list of MPMs; deriving an intra prediction mode of the current block on the basis of the remaining mode information; generating prediction samples for the current block on the basis of the intra prediction mode of the current block; and generating reconstructed samples for the current block on the basis of the prediction samples for the current block, wherein on the basis that DIMD mode or TIMD for the current block can be derived, a plurality of intra prediction modes are derived on the basis of the remaining mode information.

    DMVR-BASED INTER-PREDICTION METHOD AND DEVICE
    7.
    发明公开
    DMVR-BASED INTER-PREDICTION METHOD AND DEVICE 审中-公开

    公开(公告)号：US20240187603A1

    公开(公告)日：2024-06-06

    申请号：US18414190

    申请日：2024-01-16

    Applicant: LG Electronics Inc.

    Inventor： Naeri PARK ,  Junghak NAM

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

    CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

    Abstract: An image decoding method performed by a decoding device according to the present document comprises the steps of: deriving a motion vector for a current block; determining whether to apply refinement to the motion vector for the current block; deriving a refined motion vector by applying decoder-side motion vector refinement (DMVR) to the motion vector if it is determined to apply refinement to the motion vector for the current block; deriving prediction samples for the current block on the basis of the refined motion vector; and generating reconstruction samples for the current block on the basis of the prediction samples, wherein the step of determining whether to apply refinement includes determining whether to apply the refinement on the basis of at least one of the size of the current block and bi-prediction weight index information for the current block.

    CODING OF INFORMATION ABOUT TRANSFORM KERNEL SET
    8.
    发明公开
    CODING OF INFORMATION ABOUT TRANSFORM KERNEL SET 审中-公开

    公开(公告)号：US20240163434A1

    公开(公告)日：2024-05-16

    申请号：US18412045

    申请日：2024-01-12

    Applicant: LG Electronics Inc.

    Inventor： Junghak NAM ,  Moonmo KOO ,  Jaehyun LIM ,  Seunghwan KIM

    IPC: H04N19/12 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18

    CPC classification number: H04N19/12 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18

    Abstract: An image decoding method includes: acquiring a multiple transform selection (MTS) index and residual information from a bitstream; deriving transform coefficients for the current block on the basis of the residual information; and generating residual samples of the current block on the basis of the MTS index and the transform coefficients, wherein the MTS index indicates a transform kernel set to be applied to the current block among transform kernel set candidates, at least one bin among bins of a bin string of the MTS index is derived on the basis of context coding, the context coding is performed on the basis of values of increase and decrease in a context index pertaining to the MTS index, and a single value of increase and decrease in the context index can be used for the context coding of the first bin among the bins of the bin string.

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