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    INTER PREDICTION METHOD AND APPARATUS BASED ON HISTORY-BASED MOTION VECTOR
    21.
    发明申请
    INTER PREDICTION METHOD AND APPARATUS BASED ON HISTORY-BASED MOTION VECTOR 审中-公开

    公开(公告)号：US20200186820A1

    公开(公告)日：2020-06-11

    申请号：US16790089

    申请日：2020-02-13

    Applicant: LG ELECTRONICS INC.

    Inventor： Naeri PARK ,  Junghak Nam ,  Hyeonbmoon Jang

    IPC: H04N19/513 ,  H04N19/44

    Abstract: An image decoding method according to the present disclosure includes deriving a history-based motion vector prediction (HMVP) buffer for a current block, deriving motion information of the current block based on an HMVP candidate included in the HMVP buffer, generating prediction samples for the current block based on the motion information, and generating reconstructed samples based on the prediction samples, and the HMVP buffer is initialized when processing a first-ordered CTU in a CTU row in which a current CTU is located, and the current block is included in the current CTU.

    INTER-PREDICTION METHOD AND APPARATUS IN IMAGE CODING SYSTEM
    22.
    发明申请
    INTER-PREDICTION METHOD AND APPARATUS IN IMAGE CODING SYSTEM 审中-公开

    公开(公告)号：US20190356922A1

    公开(公告)日：2019-11-21

    申请号：US16476003

    申请日：2017-04-25

    Applicant: LG Electronics Inc.

    Inventor： Naeri PARK ,  Junghak NAM ,  Jaehyun LIM ,  Seunghwan KIM ,  Jungdong SEO ,  Jaeho LEE ,  Hyeongmoon JANG

    IPC: H04N19/139 ,  H04N19/109 ,  H04N19/503 ,  H04N19/176 ,  H04N19/105

    Abstract: An image decoding method carried out by a decoding apparatus according to the present invention comprises the steps of: deriving a correspondence block corresponding to the current block of the current picture, the correspondence block being located in a co-located picture; deriving a movement vector of the correspondence block; scaling the movement vector of the correspondence block on the basis of a first temporal distance and second temporal distance, the first temporal distance being the difference between the POC values of the co-located picture and POC values of the reference picture of the correspondence block, and the second temporal distance being the difference between the POC values of the co-located picture and POC values of the current picture containing the current block; deriving the movement vector updated on the basis of the scaled movement vector and location of the current block; and deriving a movement vector of the current block on the basis of the updated movement vector.

    IMAGE DECODING METHOD AND DEVICE IN IMAGE CODING SYSTEM
    24.
    发明申请
    IMAGE DECODING METHOD AND DEVICE IN IMAGE CODING SYSTEM 审中-公开

    公开(公告)号：US20190281286A1

    公开(公告)日：2019-09-12

    申请号：US16347422

    申请日：2016-11-07

    Applicant: LG ELECTRONICS INC.

    Inventor： Naeri PARK ,  Jungdong SEO ,  Jaehyun LIM ,  Junghak NAM

    IPC: H04N19/105 ,  H04N19/117 ,  H04N19/46 ,  H04N19/159 ,  H04N19/13 ,  H04N19/44 ,  H04N19/176

    Abstract: According to the present invention, an image decoding method performed by a decoding device comprises the steps of: generating a first prediction block and a second prediction block of a current block; selecting a prediction block, to which a Wiener filter is to be applied, among the first prediction block and the second prediction block; deriving Wiener filter coefficients of the selected prediction block based on the first prediction block and the second prediction block; filtering the selected prediction block based on the derived Wiener filter coefficients; and generating a reconstructed block of the current block based on the filtered prediction block. According to the present invention, the overall coding efficiency can be improved by minimizing the difference between prediction blocks.

    INTER-PREDICTION MODE BASED IMAGE PROCESSING METHOD, AND APPARATUS THEREFOR
    26.
    发明申请
    INTER-PREDICTION MODE BASED IMAGE PROCESSING METHOD, AND APPARATUS THEREFOR 审中-公开

    公开(公告)号：US20190124332A1

    公开(公告)日：2019-04-25

    申请号：US16089455

    申请日：2016-03-28

    Applicant: LG Electronics Inc.

    Inventor： Jaehyun LIM ,  Naeri PARK

    IPC: H04N19/137 ,  H04N19/105

    Abstract: In the present invention, an inter-prediction mode based image processing method and an apparatus therefor are disclosed. Specifically, the inter-prediction based image processing method may comprise the steps of: deriving movement information of a control point for specifying a reference block of a current block; dividing the current block into sub-blocks; deriving movement information of the sub-blocks using the movement information of the control point; and generating a prediction block for each sub-block using the movement information of the sub-blocks.

    INTER PREDICTION METHOD AND APPARATUS IN IMAGE CODING SYSTEM
    28.
    发明申请
    INTER PREDICTION METHOD AND APPARATUS IN IMAGE CODING SYSTEM 审中-公开

    公开(公告)号：US20180352247A1

    公开(公告)日：2018-12-06

    申请号：US15761665

    申请日：2016-08-25

    Applicant: LG ELECTRONICS INC.

    Inventor： Naeri PARK ,  Jaehyun LIM ,  Jungdong SEO ,  Junghak NAM

    IPC: H04N19/513

    CPC classification number: H04N19/513 ,  H04N19/52 ,  H04N19/573 ,  H04N19/577

    Abstract: An inter prediction method performed by a decoding apparatus according to the present invention comprises the steps of: receiving information associated with an MVD through a bit stream; deriving a candidate motion information list on the basis of a neighboring block of a current block; deriving an MVP of the current block on the basis of the candidate motion information list; deriving a motion vector of the current block on the basis of the MVP and the MVD; and generating a prediction sample with respect to the current block on the basis of the motion vector. According to the present invention, a motion vector may be derived on the basis of a candidate motion information list derived on the basis of a neighboring block. Therefore, the amount of data of prediction mode information can be reduced and inter prediction accuracy and overall coding efficiency can be improved.

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