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    IMAGE DECODING METHOD/APPARATUS, IMAGE ENCODING METHOD/APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM
    14.
    发明申请
    IMAGE DECODING METHOD/APPARATUS, IMAGE ENCODING METHOD/APPARATUS, AND RECORDING MEDIUM STORING BITSTREAM 有权

    公开(公告)号：US20210006815A1

    公开(公告)日：2021-01-07

    申请号：US16978025

    申请日：2019-03-19

    Applicant: Intellectual Discovery Co., Ltd.

    Inventor： Yong Jo AHN ,  Ho Chan RYU

    IPC: H04N19/51 ,  H04N19/105 ,  H04N19/176

    Abstract: The present invention provides an image encoding method and an image decoding method. An image decoding method according to the present invention, for decoding an image by decoder-side motion information derivation, comprises the steps of: checking, from among a plurality of motion information derivation types, the motion information derivation type applied to the current block: and deriving motion information of the current block according to the checked motion information derivation type, wherein different motion information compensation techniques are applicable according to the motion information derivation type.

    VIDEO CODING METHOD AND DEVICE WHICH USE SUB-BLOCK UNIT INTRA PREDICTION
    19.
    发明申请
    VIDEO CODING METHOD AND DEVICE WHICH USE SUB-BLOCK UNIT INTRA PREDICTION 有权

    公开(公告)号：US20220132141A1

    公开(公告)日：2022-04-28

    申请号：US17570727

    申请日：2022-01-07

    Applicant: Intellectual Discovery Co., Ltd.

    Inventor： Yong Jo AHN ,  Ho Chan RYU

    IPC: H04N19/159 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593 ,  H04N19/70

    Abstract: The present invention relates to an intra prediction scheme among video coding techniques and, more particularly, relates to a video decoding method and apparatus for diving a block into a plurality of sub-blocks when intra prediction is performed and sequentially performing infra prediction on each of the sub-blocks. The decoding method performed by a video decoding apparatus includes determining whether to perform sub-block-based intra prediction on a current coding unit, dividing the current coding unit into a plurality of sub-blocks, performing intra prediction on each of the sub-blocks when a result of determination of whether to perform sub-block-based intra prediction has a value of “true”, and directly performing block-based intra prediction on the current coding unit without dividing the current coding unit when the result of the determination has a value of “false”.

    VIDEO CODING METHOD AND DEVICE WHICH USE SUB-BLOCK UNIT INTRA PREDICTION
    20.
    发明申请
    VIDEO CODING METHOD AND DEVICE WHICH USE SUB-BLOCK UNIT INTRA PREDICTION 有权

    公开(公告)号：US20210067786A1

    公开(公告)日：2021-03-04

    申请号：US16957933

    申请日：2018-12-28

    Applicant: INTELLECTUAL DISCOVERY CO., LTD.

    Inventor： Yong Jo AHN ,  Ho Chan RYU

    IPC: H04N19/159 ,  H04N19/176 ,  H04N19/119 ,  H04N19/593 ,  H04N19/70

    Abstract: The present invention relates to an intra prediction scheme among video coding techniques and, more particularly, relates to a video decoding method and apparatus for diving a block into a plurality of sub-blocks when intra prediction is performed and sequentially performing infra prediction on each of the sub-blocks. The decoding method performed by a video decoding apparatus includes determining whether to perform sub-block-based intra prediction on a current coding unit, dividing the current coding unit into a plurality of sub-blocks, performing intra prediction on each of the sub-blocks when a result of determination of whether to perform sub-block-based intra prediction has a value of “true”, and directly performing block-based intra prediction on the current coding unit without dividing the current coding unit when the result of the determination has a value of “false”.

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