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    INTER PREDICTION METHOD AND APPARATUS IN IMAGE/VIDEO CODING SYSTEM
    143.
    发明申请
    INTER PREDICTION METHOD AND APPARATUS IN IMAGE/VIDEO CODING SYSTEM 有权

    公开(公告)号：US20220337818A1

    公开(公告)日：2022-10-20

    申请号：US17857281

    申请日：2022-07-05

    Applicant: LG Electronics Inc.

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

    IPC: H04N19/105 ,  H04N19/70 ,  H04N19/132 ,  H04N19/176 ,  H04N19/174 ,  H04N19/172 ,  H04N19/503

    Abstract: A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: parsing, from a bitstream, flags associated with weighted prediction; parsing a prediction weighted table syntax from a picture header of the bitstream on the basis of the flags; generating prediction samples regarding a current block in a current picture on the basis of syntax elements in the prediction weighted table syntax; and generating reconstructed samples on the basis of the prediction samples, wherein the flags comprise a first flag associated with whether the weighted prediction is applied to slices referring to a picture parameter set of the bitstream, and a second flag associated with whether information related to the weighted prediction is present in the picture header, and the second flag may be parsed from the picture parameter set on the basis of the first flag.

    LUMA MAPPING- AND CHROMA SCALING-BASED VIDEO OR IMAGE CODING
    144.
    发明申请
    LUMA MAPPING- AND CHROMA SCALING-BASED VIDEO OR IMAGE CODING 有权

    公开(公告)号：US20220329828A1

    公开(公告)日：2022-10-13

    申请号：US17608096

    申请日：2020-05-12

    Applicant: LG ELECTRONICS INC.

    Inventor： Jie ZHAO ,  Seunghwan KIM

    IPC: H04N19/186 ,  H04N19/132 ,  H04N19/169

    Abstract: According to the disclosure of the present document, for LMCS, a linear reshaper may be used, LMCS codewords (or ranges thereof) may be restricted, and in the chroma scaling of the LMCS, a single chroma residual scaling factor may be used. Accordingly, the resources/cost (of software or hardware) necessary for an LMCS procedure may be minimized, and latency in coding may be eliminated, thus enabling the LMCS procedure to be efficiently performed.

    IMAGE/VIDEO CODING METHOD AND DEVICE
    145.
    发明申请
    IMAGE/VIDEO CODING METHOD AND DEVICE 有权

    公开(公告)号：US20220272349A1

    公开(公告)日：2022-08-25

    申请号：US17736610

    申请日：2022-05-04

    Applicant: LG ELECTRONICS INC.

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

    IPC: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/174 ,  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.

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