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    MATRIX-BASED INTRA PREDICTION DEVICE AND METHOD
    132.
    发明申请
    MATRIX-BASED INTRA PREDICTION DEVICE AND METHOD 有权

    公开(公告)号：US20240430447A1

    公开(公告)日：2024-12-26

    申请号：US18829826

    申请日：2024-09-10

    Applicant: LG ELECTRONICS INC.

    Inventor： Mehdi Salehifar ,  Seunghwan Kim

    IPC: H04N19/159 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70

    Abstract: An image decoding method according to the present document can comprise the steps of: on the basis of first flag information indicating whether or not matrix-based intra prediction (MIP) can be applied to a current block, receiving second flag information indicating whether or not the MIP is used for the current block; receiving matrix-based intra prediction (MIP) mode information on the basis of the second flag information; generating intra prediction samples for the current block on the basis of the MIP mode information; and generating reconstructed samples for the current block on the basis of the intra prediction samples.

    Method and device for processing video signal using reduced transform
    133.
    发明授权
    Method and device for processing video signal using reduced transform 有权

    公开(公告)号：US12177484B2

    公开(公告)日：2024-12-24

    申请号：US17428016

    申请日：2020-02-06

    Applicant: LG ELECTRONICS INC.

    Inventor： Moonmo Koo ,  Seunghwan Kim ,  Mehdi Salehifar ,  Jaehyun Lim

    IPC: H04N19/625 ,  H04N19/119 ,  H04N19/12 ,  H04N19/157 ,  H04N19/176

    Abstract: A method and device for processing a video signal using a reduced transform are provided. A method for decoding a video signal includes splitting a current block into a plurality of subblocks based on a first flag for a split direction of the current block, determining a subblock, to which a transform is applied, among the plurality of subblocks based on a second flag for a position of a transform target block, determining a transform target area in the subblock, and applying an inverse transform including a horizontal transform and a vertical transform to transform coefficients of the transform target area. The transform target area is determined based on a transform type applied to the subblock and a size of the subblock.

    Image/video encoding/decoding method and apparatus using same
    134.
    发明授权
    Image/video encoding/decoding method and apparatus using same 有权

    公开(公告)号：US12177422B2

    公开(公告)日：2024-12-24

    申请号：US18215776

    申请日：2023-06-28

    Applicant: LG ELECTRONICS INC.

    Inventor： Seethal Paluri ,  Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

    IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/51 ,  H04N19/70

    Abstract: A video decoding method performed by a video decoding apparatus according to the present document may comprise the steps of: parsing a prediction weighted table syntax from a bitstream; parsing number information about weighted reference pictures in a reference picture list from the prediction weighted table syntax; deriving a weighting factor-related flag about the reference picture list on the basis of the number information; performing weighted prediction on a current block on the basis of the weighting factor-related flag so as to derive prediction samples of the current block; generating residual samples on the basis of residual information obtained from the bitstream; and reconstructing a current picture on the basis of the prediction samples and the residual samples, wherein the prediction weighted table syntax is parsed from a picture header of the bitstream.

    Methods and device for signaling image information
    136.
    发明授权
    Methods and device for signaling image information 有权

    公开(公告)号：US12166996B2

    公开(公告)日：2024-12-10

    申请号：US17783572

    申请日：2020-12-10

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry Hendry ,  Seunghwan Kim

    IPC: H04N19/136 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

    Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: obtaining prediction-related information and indication information comprising a first flag which indicates whether or not a sample adaptive offset (SAO) process to be applied to a current block is applied at a picture level or a slice level; parsing information related to the SAO process from a picture header or a slice header on the basis of the first flag; generating prediction samples for the current block on the basis of the prediction-related information; generating reconstructed samples for the current block on the basis of the prediction samples; and performing the SAO process for the reconstructed samples on the basis of the information related to the SAO process.

    Method and apparatus for processing image signal
    140.
    发明授权
    Method and apparatus for processing image signal 有权

    公开(公告)号：US12137216B2

    公开(公告)日：2024-11-05

    申请号：US18519996

    申请日：2023-11-27

    Applicant: LG ELECTRONICS INC.

    Inventor： Moonmo Koo ,  Mehdi Salehifar ,  Seunghwan Kim ,  Jaehyun Lim

    IPC: H04N19/11 ,  H04N19/176 ,  H04N19/61

    Abstract: Embodiments of the present invention provide a method and apparatus for processing a video signal. A method for decoding an image signal according to an embodiment of the present invention comprises the steps of: for a current block having a width and a height different from each other, determining a modified intra prediction mode from an intra prediction mode, on the basis of a ratio between the width and the height of the current block and the intra prediction mode; determining an inverse non-separable transform set on the basis of the modified intra prediction mode; and applying an inverse non-separable transform matrix selected from the inverse non-separable transform set with respect to the top-left region of the current block, which is determined according to the width and the height of the current block.

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