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    METHOD AND APPARATUS FOR SIGNALING PURPOSE FOR NEURAL-NETWORK POST-FILTER GROUPING CHARACTERISTIC SEI MESSAGE FOR CODED BITSTREAM
    1.
    发明申请
    METHOD AND APPARATUS FOR SIGNALING PURPOSE FOR NEURAL-NETWORK POST-FILTER GROUPING CHARACTERISTIC SEI MESSAGE FOR CODED BITSTREAM 有权

    公开(公告)号：US20250106393A1

    公开(公告)日：2025-03-27

    申请号：US18899429

    申请日：2024-09-27

    Applicant: LG ELECTRONICS INC.

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

    IPC: H04N19/117 ,  H04N19/70

    Abstract: An image decoding method including obtaining a neural network post-filter (NNPF) group (NNPFG) characteristics supplemental enhancement information (SEI) message specifying information related to a group of two or more NNPFs to be applied to image data; determining a grouping type of the group of the two or more NNPFs based on the message; based on the grouping type indicating that only one of the group of the two or more NNPFs is to be selected to be applied, or that the group of the two or more NNPFs are to be applied in parallel, obtaining a value corresponding to a purpose of each of the group of the two or more NNPFs; and applying at least one of the group of the two or more NNPFs to the image data based the obtained value.

    IMAGE/VIDEO CODING METHOD AND DEVICE
    2.
    发明申请
    IMAGE/VIDEO CODING METHOD AND DEVICE 有权

    公开(公告)号：US20250097424A1

    公开(公告)日：2025-03-20

    申请号：US18962039

    申请日：2024-11-27

    Applicant: LG ELECTRONICS INC.

    Inventor： Seethal PALURI ,  Hendry HENDRY ,  Seunghwan KIM ,  Jie ZHAO

    IPC: H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

    Abstract: A video decoding method performed by a video decoding device according to the present document comprises the steps of: acquiring image information from a bitstream, the image information including a picture header associated with the current picture including a plurality of slices; parsing, from the picture header, a first flag indicating whether information necessary for an inter-prediction operation for a decoding process is present in the picture header; parsing, from the picture header, a second flag indicating whether information necessary for an intra-prediction operation for the decoding process is present in the picture header; and generating prediction samples by performing at least one of intra-prediction or inter-prediction for the slices in the current picture on the basis of the first flag or the second flag.

    METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL BASED ON HISTORY BASED MOTION VECTOR PREDICTION
    5.
    发明申请
    METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL BASED ON HISTORY BASED MOTION VECTOR PREDICTION 有权

    公开(公告)号：US20250008150A1

    公开(公告)日：2025-01-02

    申请号：US18882635

    申请日：2024-09-11

    Applicant: LG ELECTRONICS INC.

    Inventor： Jane ZHAO ,  Seunghwan KIM

    IPC: H04N19/56 ,  H04N19/176 ,  H04N19/513

    Abstract: The disclosure discloses a method for processing video signals and an apparatus therefor. Specifically, the method of processing video signals based on inter prediction, comprising: configuring a merge candidate list based on a spatial neighboring block and a temporal neighboring block to a current block; adding a history-based merge candidate of the current block to the merge candidate list; obtaining a merge index indicating a merge candidate used for an inter prediction of the current block within the merge candidate list; generating a prediction sample of the current block based on motion information of the merge candidate indicated by the merge index; and updating a history-based merge candidate list based on the motion information.

    VIDEO CODING METHOD BASED ON SECONDARY TRANSFORM, AND DEVICE THEREFOR
    7.
    发明申请
    VIDEO CODING METHOD BASED ON SECONDARY TRANSFORM, AND DEVICE THEREFOR 有权

    公开(公告)号：US20240406394A1

    公开(公告)日：2024-12-05

    申请号：US18749048

    申请日：2024-06-20

    Applicant: LG Electronics Inc.

    Inventor： Moonmo KOO ,  Seunghwan KIM ,  Mehdi SALEHIFAR ,  Jaehyun LIM

    IPC: H04N19/122 ,  H04N19/11 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46

    Abstract: A video decoding method according to the present document comprises the steps of: deriving transform coefficients by performing de-quantization on the basis of quantized transform coefficients for a target block; deriving modified transform coefficients on the basis of an inverse reduced secondary transform (RST) of the transform coefficients; and generating a reconstructed picture on the basis of residual samples for the target block on the basis of an inverse primary transform of the modified transform coefficients, wherein an inverse RST using a transform kernel matrix is performed on transform coefficients of an upper-left 4×4 region of an 8×8 region of the target block, and modified transform coefficients of the upper-left 4×4 region, an upper-right 4×4 region, and a lower-left 4×4 region of the 8×8 region are derived through the inverse RST.

    IMAGE CODING DEVICE AND METHOD
    8.
    发明申请
    IMAGE CODING DEVICE AND METHOD 有权

    公开(公告)号：US20240397051A1

    公开(公告)日：2024-11-28

    申请号：US18793081

    申请日：2024-08-02

    Applicant: LG ELECTRONICS INC.

    Inventor： Hendry HENDRY ,  Seethal PALURI ,  Seunghwan KIM

    IPC: H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/82

    Abstract: In relation to an in-loop filtering procedure described in the present document, a virtual boundary is defined so as to further increase the subjective/objective visual quality of a restored picture and the in-loop filtering procedure can be applied across the virtual boundary. The virtual boundary can include, for example, a discontinuous edge such as a 360-degree image, a VR image, or picture in picture (PIP). For example, the virtual boundary can be at a predetermined appointed position, and the existence and/or the position thereof can be signaled. Embodiments of the present document present a method for efficiently signaling virtual boundary-related information.

    VIDEO DECODING METHOD USING RESIDUAL INFORMATION IN VIDEO CODING SYSTEM, AND APPARATUS THEREOF
    9.
    发明申请
    VIDEO DECODING METHOD USING RESIDUAL INFORMATION IN VIDEO CODING SYSTEM, AND APPARATUS THEREOF 有权

    公开(公告)号：US20240380910A1

    公开(公告)日：2024-11-14

    申请号：US18782189

    申请日：2024-07-24

    Applicant: LG Electronics Inc.

    Inventor： Sunmi YOO ,  Jungah CHOI ,  Seunghwan KIM

    IPC: H04N19/46 ,  H04N19/103 ,  H04N19/136 ,  H04N19/176

    Abstract: A video decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: receiving residual information for a current block; deriving a context model for a sine flag of a current residual coefficient in a current sub-block of the current block; decoding the sine flag on the basis of the context model; deriving the current residual coefficient on the basis of the sine flag; deriving a residual sample on the basis of the current residual coefficient; and generating a reconstructed picture on the basis of the residual sample, wherein the context model for the sine flag is derived on the basis of a sine flag of a residual coefficient decoded before the current residual coefficient in the current sub-block.

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