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    INTRA PREDICTION-BASED IMAGE CODING METHOD AND APPARATUS USING MPM LIST
    481.
    发明申请
    INTRA PREDICTION-BASED IMAGE CODING METHOD AND APPARATUS USING MPM LIST 有权

    公开(公告)号：US20250080724A1

    公开(公告)日：2025-03-06

    申请号：US18951275

    申请日：2024-11-18

    Applicant: LG ELECTRONICS INC.

    Inventor： Ling LI ,  Jin HEO ,  Seunghwan KIM

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

    Abstract: A video decoding method according to this document includes deriving a first candidate intra prediction mode based on a first neighboring block located on a left side of a current block, deriving a second candidate intra prediction mode based on a second neighboring block located on an upper side of the current block, constructing a most probable mode (MPM) list for the current block based on the first candidate intra prediction mode and the second candidate intra prediction mode, deriving an intra prediction mode for the current block based on the MPM list, generating predicted samples by performing prediction for the current block based on the intra prediction mode, and generating a reconstructed picture for the current block based on the predicted samples.

    METHOD AND DEVICE FOR CODING INTRA PREDICTION MODE
    482.
    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.

    APPARATUS AND METHOD FOR CODING IMAGE ON BASIS OF SIGNALING OF INFORMATION FOR FILTERING
    483.
    发明申请
    APPARATUS AND METHOD FOR CODING IMAGE ON BASIS OF SIGNALING OF INFORMATION FOR FILTERING 有权

    公开(公告)号：US20250039390A1

    公开(公告)日：2025-01-30

    申请号：US18915219

    申请日：2024-10-14

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

    IPC: H04N19/132 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/82

    Abstract: An image decoding method according to embodiments of the present document may comprise the steps of: acquiring, via a bitstream, image information including residual information; generating reconstruction samples on the basis of the residual information; and performing an in-loop filtering procedure for the reconstruction samples so as to generate modified reconstruction samples. The step of generating of the modified reconstruction samples may comprise a step of determining whether the in-loop filtering procedure is performed across virtual boundaries. In an example, wherein the image information includes an SPS, and on the basis of whether reference picture resampling is available, whether the SPS includes additional virtual boundary-related information may be determined.

    IMAGE DECODING METHOD AND APPARATUS BASED ON MOTION PREDICTION USING MERGE CANDIDATE LIST IN IMAGE CODING SYSTEM
    485.
    发明申请
    IMAGE DECODING METHOD AND APPARATUS BASED ON MOTION PREDICTION USING MERGE CANDIDATE LIST IN IMAGE CODING SYSTEM 有权

    公开(公告)号：US20250008151A1

    公开(公告)日：2025-01-02

    申请号：US18824285

    申请日：2024-09-04

    Applicant: LG ELECTRONICS INC.

    Inventor： Jaeho LEE ,  Seunghwan KIM

    IPC: H04N19/573 ,  H04N19/176 ,  H04N19/52

    Abstract: An image decoding method performed by a decoding apparatus according to the present document includes constituting a candidate list for deriving motion information of a sub-block unit for a current block, wherein the merge candidate list includes constructed candidates; deriving control point motion vectors (CPMVs) for control points (CPs) of the current block based on the merge candidate list; deriving prediction samples for the current block based on the CPMVs; and generating a reconstructed picture for the current block based on the derived prediction samples, wherein the constructed candidates are derived based on combination of at least two of a first neighboring block in a first group, a second neighboring block in a second group, a third neighboring block in a third group and a fourth neighboring block, and the first neighboring block, the second neighboring block and the third neighboring block and the fourth neighboring block constituting the combination have the same reference picture index.

    METHOD AND DEVICE FOR IMAGE CODING BASED ON DECODER-SIDE MOTION VECTOR REFINEMENT
    488.
    发明申请
    METHOD AND DEVICE FOR IMAGE CODING BASED ON DECODER-SIDE MOTION VECTOR REFINEMENT 有权

    公开(公告)号：US20240406403A1

    公开(公告)日：2024-12-05

    申请号：US18695225

    申请日：2022-09-30

    Applicant: LG Electronics Inc.

    Inventor： Seethal PALURI ,  Seunghwan KIM

    IPC: H04N19/137 ,  H04N19/132 ,  H04N19/176

    Abstract: An image decoding method performed by a decoding device is provided. The method comprises the steps of: deriving a motion vector of a current block; deriving a refined motion vector regarding the current block by applying decoder-side motion vector refinement (DMVR) to the motion vector; deriving prediction samples regarding the current block on the basis of the refined motion vector; and generating reconstruction samples regarding the current block on the basis of the prediction samples, wherein the refined motion vector is derived on the basis of a search end condition of the decoder-side motion vector refinement.

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