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    IMAGE DECODING METHOD FOR CHROMA COMPONENT AND APPARATUS THEREFOR
    41.
    发明申请
    IMAGE DECODING METHOD FOR CHROMA COMPONENT AND APPARATUS THEREFOR 有权

    公开(公告)号：US20220279186A1

    公开(公告)日：2022-09-01

    申请号：US17624991

    申请日：2020-07-03

    Applicant: LG Electronics Inc.

    Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

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

    Abstract: An image decoding method performed by a decoding apparatus, according to the present document, comprises the steps of: acquiring image information including chroma quantization parameter data of at least one chroma QP mapping table for chroma components, and prediction information and residual information regarding the chroma components; deriving the chroma QP mapping table on the basis of the chroma quantization parameter data; deriving a chroma quantization parameter for the chroma components on the basis of the chroma QP mapping table; deriving prediction samples for the chroma components on the basis of the prediction information; deriving residual samples on the basis of the residual information and the chroma quantization parameter; and generating a reconstructed picture on the basis of the prediction samples and the residual samples.

    IMAGE DECODING METHOD FOR CHROMA COMPONENT AND DEVICE THEREFOR
    46.
    发明申请
    IMAGE DECODING METHOD FOR CHROMA COMPONENT AND DEVICE THEREFOR 有权

    公开(公告)号：US20220103849A1

    公开(公告)日：2022-03-31

    申请号：US17546599

    申请日：2021-12-09

    Applicant: LG Electronics Inc.

    Inventor： Seethal PALURI ,  Seunghwan KIM ,  Jie ZHAO

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

    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.

    INTER PREDICTION METHOD AND APPARATUS USING SECONDARY LIST
    47.
    发明申请
    INTER PREDICTION METHOD AND APPARATUS USING SECONDARY LIST 有权

    公开(公告)号：US20250126240A1

    公开(公告)日：2025-04-17

    申请号：US18727021

    申请日：2023-01-06

    Applicant: LG Electronics Inc.

    Inventor： Seunghwan KIM ,  Seethal PALURI ,  Jie ZHAO

    IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/577

    Abstract: According to a present disclosure, an image decoding method performed by a decoding apparatus, the image decoding method comprising obtaining image information including inter prediction-related information of a current block from a bitstream; configuring at least one of a merge list of the current block and an advanced motion vector prediction (AMVP) list of the current block for inter prediction; deriving motion information of the current block on the basis of the at least one of the merge list of the current block and the AMVP list of the current block; generating prediction samples for the current block based on the motion information of the current block; and generating reconstruction samples for the current block based on the prediction samples for the current block, wherein the merge list includes at least one of a primary merge list and a secondary merge list (SML).

    NON-SEPARABLE PRIMARY TRANSFORM DESIGN METHOD AND APPARATUS
    50.
    发明申请
    NON-SEPARABLE PRIMARY TRANSFORM DESIGN METHOD AND APPARATUS 有权

    公开(公告)号：US20240414374A1

    公开(公告)日：2024-12-12

    申请号：US18703597

    申请日：2022-10-20

    Applicant: LG Electronics Inc.

    Inventor： Jungah CHOI ,  Seunghwan KIM ,  Moonmo KOO ,  Jie ZHAO ,  Jaehyun LIM ,  Jangwon CHOI

    IPC: H04N19/60 ,  H04N19/159 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

    Abstract: According to the disclosure of the present document, by configuring a primary transform to include a non-separable transform, higher encoding efficiency may be expected compared to the existing primary transform including only a separable transform. Also, by efficiently signaling information related to a primary transform including a separable transform and a non-separable transform, the effect of reducing the number of bits and improving coding performance may be expected. In addition, by efficiently applying a primary transform and a secondary transform, computational complexity and power consumption may be reduced, and latency required for additionally generated transform coefficient processing may be minimized.

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