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    METHOD AND DEVICE FOR SIGNALING INFORMATION RELATED TO SLICE IN IMAGE/VIDEO ENCODING/DECODING SYSTEM
    191.
    发明申请
    METHOD AND DEVICE FOR SIGNALING INFORMATION RELATED TO SLICE IN IMAGE/VIDEO ENCODING/DECODING SYSTEM 有权

    公开(公告)号：US20220295070A1

    公开(公告)日：2022-09-15

    申请号：US17826087

    申请日：2022-05-26

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

    IPC: H04N19/132 ,  H04N19/176 ,  H04N19/174 ,  H04N19/70

    Abstract: A method by which a video decoding device decodes a video, according to the present document, can comprise the steps of: parsing, from a bitstream, number information related to the number of slices of which the height within a tile of a current picture is explicitly signaled; parsing, from the bitstream, on the basis of the number information, height information related to the height of the slices of which the height is explicitly signaled; deriving the number of slices in the tile on the basis of the number information and the height information; generating prediction samples by predicting the current block of the current picture on the basis of the slices within the tile; generating reconstructed samples on the basis of the prediction samples; and generating a reconstructed picture for the current picture on the basis of the reconstructed samples.

    IMAGE DECODING METHOD USING CHROMA QUANTIZATION PARAMETER, AND APPARATUS THEREFOR
    194.
    发明申请
    IMAGE DECODING METHOD USING CHROMA QUANTIZATION PARAMETER, AND APPARATUS THEREFOR 有权

    公开(公告)号：US20220264098A1

    公开(公告)日：2022-08-18

    申请号：US17629957

    申请日：2020-08-20

    Applicant: LG Electronics Inc.

    Inventor： Jie ZHAO ,  Seethal PALURI ,  Seunghwan KIM

    IPC: H04N19/132 ,  H04N19/18 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

    Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of obtaining residual information for a current chroma block; obtaining CU chroma QP offset-related information for the current chroma block on the basis of the size and tree type of the current chroma block; deriving transform coefficients for the current chroma block on the basis of the residual information; deriving chroma QP for the current chroma block on the basis of the CU chroma QP offset-related information; deriving residual samples for the current chroma block by dequantizing the transform coefficients on the basis of the chroma QP; and generating a reconstructed picture on the basis of the residual samples.

    IMAGE CODING METHOD BASED ON MOTION VECTOR AND APPARATUS THEREFOR
    198.
    发明申请
    IMAGE CODING METHOD BASED ON MOTION VECTOR AND APPARATUS THEREFOR 有权

    公开(公告)号：US20220159266A1

    公开(公告)日：2022-05-19

    申请号：US17592771

    申请日：2022-02-04

    Applicant: LG Electronics Inc.

    Inventor： Seethal PALURI ,  Seunghwan KIM

    IPC: H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/52 ,  H04N19/91

    Abstract: A picture decoding method performed by a decoding apparatus according to the present disclosure includes obtaining motion prediction information from bitstream, generating an affine MVP candidate list including affine MVP candidates for a current block, deriving CPMVPs for respective CPs of the current block based on one of the affine MVP candidates included in the affine MVP candidate list, deriving the CPMVDs for the CPs of the current block based on information on CPMVDs for each of the CPs included in the obtained motion prediction information, deriving CPMVs for the CPs of the current block based on the CPMVPs and the CPMVDs, deriving prediction samples for the current block based on the CPMVs, and generating reconstructed samples for the current block based on the derived prediction samples.

    ADAPTIVE LOOP FILTER-BASED VIDEO OR IMAGE CODING
    199.
    发明申请
    ADAPTIVE LOOP FILTER-BASED VIDEO OR IMAGE CODING 有权

    公开(公告)号：US20220132115A1

    公开(公告)日：2022-04-28

    申请号：US17570284

    申请日：2022-01-06

    Applicant: LG ELECTRONICS INC.

    Inventor： Seethal PALURI ,  Seunghwan KIM

    IPC: H04N19/117 ,  H04N19/82 ,  H04N19/132 ,  H04N19/13 ,  H04N19/186 ,  H04N19/176 ,  H04N19/46

    Abstract: An image decoding method, according to the present disclosure, enables: acquiring, from a bitstream, image information including prediction mode information and adaptive loop filter (ALF) information including alternative filter information for a chroma component of a current block; deriving prediction samples for the current block on the basis of the prediction mode information; generating reconstructed samples on the basis of the prediction samples; and generating modified reconstructed samples for the chroma component of the current block on the basis of the alternative filter information.

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