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    Image decoding method for chroma component and device therefor
    123.
    发明授权
    Image decoding method for chroma component and device therefor 有权

    公开(公告)号：US12278979B2

    公开(公告)日：2025-04-15

    申请号：US18414182

    申请日：2024-01-16

    Applicant: LG Electronics Inc.

    Inventor： Seethal Paluri ,  Seunghwan Kim ,  Jie Zhao

    IPC: H04N19/46 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

    Abstract: An image decoding method performed by a decoding device, according to the present document, comprises the steps of: deriving a chroma quantization parameter table on the basis of quantization parameter data; deriving a quantization parameter for combined chroma coding on the basis of the chroma quantization parameter table; deriving prediction samples of a current chroma block on the basis of prediction information; deriving transform coefficients of the current chroma block on the basis of residual information; deriving residual samples by dequantizing the transform coefficients on the basis of the quantization parameter; and generating a reconstructed picture on the basis of the prediction samples and the residual samples.

    Slice type-based image/video coding method and apparatus
    125.
    发明授权
    Slice type-based image/video coding method and apparatus 有权

    公开(公告)号：US12267501B2

    公开(公告)日：2025-04-01

    申请号：US18378772

    申请日：2023-10-11

    Applicant: LG ELECTRONICS INC.

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

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

    Abstract: A video decoding method performed by a video decoding apparatus, according to the present document, comprises the steps of: obtaining image information from a bitstream, wherein the image information includes a picture header associated with a current picture, and the current picture includes a plurality of slices; parsing at least one of a first flag and a second flag from the picture header; generating prediction samples by performing at least one of intra prediction and inter prediction on a current block in the current picture on the basis of at least one of the first flag and the second flag; generating reconstructed samples on the basis of the prediction samples; and generating a reconstructed picture on the basis of the reconstructed samples.

    Inter prediction method and apparatus in image/video coding system
    126.
    发明授权
    Inter prediction method and apparatus in image/video coding system 有权

    公开(公告)号：US12267485B2

    公开(公告)日：2025-04-01

    申请号：US18382246

    申请日：2023-10-20

    Applicant: LG Electronics Inc.

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

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

    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.

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