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    SBTMVP-BASED INTER PREDICTION METHOD AND APPARATUS
    71.
    发明申请
    SBTMVP-BASED INTER PREDICTION METHOD AND APPARATUS 有权

    公开(公告)号：US20220060689A1

    公开(公告)日：2022-02-24

    申请号：US17414893

    申请日：2020-01-02

    Applicant: LG ELECTRONICS INC.

    Inventor： Hyeongmoon JANG ,  Junghak NAM

    IPC: H04N19/105 ,  H04N19/176 ,  H04N19/513 ,  H04N19/159 ,  H04N19/132

    Abstract: A method by which a decoding device performs image decoding, according to the present document, comprises the steps of: deriving a reference block on the basis of a motion shift; determining whether a subblock temporal motion vector predictor (sbTMVP) candidate is available, on the basis of whether the reference block is a current picture referencing (CPR) block; deriving motion information about a current block on the basis of the sbTMVP candidate when the sbTMVP candidate is available; generating prediction samples on the basis of the motion information; and generating a restored picture on the basis of the prediction samples, wherein the sbTMVP candidate is determined to be unavailable with respect to the reference block which is the CPR block.

    METHOD AND APPARATUS FOR DECODING IMAGE ON BASIS OF PREDICTION BASED ON MMVD IN IMAGE CODING SYSTEM
    73.
    发明申请
    METHOD AND APPARATUS FOR DECODING IMAGE ON BASIS OF PREDICTION BASED ON MMVD IN IMAGE CODING SYSTEM 有权

    公开(公告)号：US20210337209A1

    公开(公告)日：2021-10-28

    申请号：US17366722

    申请日：2021-07-02

    Applicant: LG Electronics Inc.

    Inventor： Hyeongmoon JANG ,  Junghak NAM

    IPC: H04N19/139 ,  H04N19/105 ,  H04N19/46 ,  H04N19/176

    Abstract: A method for decoding an image by a decoding apparatus according to the present document comprises the steps of: receiving a bit stream including prediction information of a current block; configuring a merge candidate list with respect to the current block; deriving motion information of the current block on the basis of a merge candidate indicated by a candidate flag of the current block in the merge candidate list; deriving an MVD of the current block on the basis of MVD information of the current block and whether or not integer sample precision or fractional sample precision is used in the motion information; deriving modified motion information of the current block on the basis of the motion information and the MVD; and performing prediction of the current block on the basis of the modified motion information, wherein the prediction information includes the candidate flag and the MVD information.

    IMAGE CODING METHOD AND DEVICE USING DEBLOCKING FILTERING
    74.
    发明申请
    IMAGE CODING METHOD AND DEVICE USING DEBLOCKING FILTERING 有权

    公开(公告)号：US20210321141A1

    公开(公告)日：2021-10-14

    申请号：US17356016

    申请日：2021-06-23

    Applicant: LG ELECTRONICS INC.

    Inventor： Hyeongmoon JANG ,  Junghak NAM

    IPC: H04N19/82 ,  H04N19/117 ,  H04N19/176 ,  H04N19/85

    Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: generating a restoration picture on the basis of prediction samples of a coding block; deriving a boundary strength (BS) for a boundary of the coding block in the restoration picture; performing deblocking filtering on the boundary of the coding block on the basis of the boundary strength; and deriving a modified restoration picture for the restoration picture on the basis of the deblocking filtering, wherein the boundary strength is derived on the basis of a prediction mode of a first block and a second block that are adjacent to the boundary of the coding block, and the prediction mode of the first block or the second block is derived on the basis of whether the prediction mode of the first block or the second block is a current picture referencing (CPR) mode to be coded in reference to a current picture.

    METHOD AND APPARATUS FOR CONSTRUCTING PREDICTION CANDIDATE ON BASIS OF HMVP
    76.
    发明申请
    METHOD AND APPARATUS FOR CONSTRUCTING PREDICTION CANDIDATE ON BASIS OF HMVP 有权

    公开(公告)号：US20210218957A1

    公开(公告)日：2021-07-15

    申请号：US17215316

    申请日：2021-03-29

    Applicant: LG ELECTRONICS INC.

    Inventor： Hyeongmoon JANG

    IPC: H04N19/105 ,  H04N19/132 ,  H04N19/85 ,  H04N19/176

    Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: constructing an AMVP candidate list comprising at least one AMVP candidate for a current block; deriving an HMVP candidate list for the current block that includes HMVP candidates for the current block; selecting at least one HMVP candidate among the HMVP candidates in the HMVP candidate list; deriving an updated AMVP candidate list by adding the at least one HMVP candidate to the AMVP candidate list; deriving motion information for the current block on the basis of the updated AMVP candidate list; deriving prediction samples for the current block on the basis of the motion information for the current block; and generating reconstruction samples for the current block on the basis of the prediction samples for the current block.

    METHOD FOR PROCESSING IMAGE ON BASIS OF INTRA-PREDICTION MODE AND APPARATUS THEREFOR
    79.
    发明申请
    METHOD FOR PROCESSING IMAGE ON BASIS OF INTRA-PREDICTION MODE AND APPARATUS THEREFOR 审中-公开

    公开(公告)号：US20200077093A1

    公开(公告)日：2020-03-05

    申请号：US16614705

    申请日：2018-05-15

    Applicant: LG ELECTRONICS INC.

    Inventor： Hyeongmoon JANG ,  Jaehyun LIM

    IPC: H04N19/117 ,  H04N19/159 ,  H04N19/593 ,  H04N19/86

    Abstract: The present invention provides an image processing method on the basis of an intra prediction mode and an apparatus therefor. Specifically, a method for processing an image on the basis of an intra prediction mode may comprise the steps of: inducing a prediction mode applied to an intra prediction of a current block; determining whether a bi-directional intra prediction using reference samples located at both boundaries of the current block with respect to a prediction direction of the prediction mode is applied to the current block; and generating a prediction sample by using a reference sample neighboring the current block on the basis of the prediction mode, wherein when the bi-directional intra prediction is applied, boundary filtering for the current block is skipped.

    METHOD AND APPARATUS FOR BLOCK PARTITIONING AND INTRA PREDICTION IN IMAGE CODING SYSTEM
    80.
    发明申请
    METHOD AND APPARATUS FOR BLOCK PARTITIONING AND INTRA PREDICTION IN IMAGE CODING SYSTEM 审中-公开

    公开(公告)号：US20200036985A1

    公开(公告)日：2020-01-30

    申请号：US16337266

    申请日：2017-09-28

    Applicant: LG Electronics Inc.

    Inventor： Hyeongmoon JANG ,  Junghak NAM

    IPC: H04N19/176 ,  H04N19/11 ,  H04N19/186 ,  H04N19/593 ,  H04N19/105

    Abstract: An intra prediction method includes: deriving a partitioning structure of a luma block; deriving intra chroma prediction mode information for deriving an intra prediction mode of a chroma block corresponding to the luma block; when the intra chroma prediction mode information indicates a derived mode (DM) or a linear mode (LM), partitioning the chroma block on the basis of the partitioning structure of the luma block so as to derive a plurality of chroma sub-blocks; and generating prediction samples for the plurality of chroma sub-blocks. The method performs illumination compensation-based inter prediction and reduces a boundary error of a block while reducing the amount of data in additional information. The method performs partitioning and intra prediction for a chroma block on the basis of a partitioning structure of a luma block.

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