Image/video encoding/decoding method and device

    公开(公告)号:US12256106B2

    公开(公告)日:2025-03-18

    申请号:US17780812

    申请日:2020-11-26

    Abstract: A video decoding method performed by a video decoding device according to the present document may comprise: parsing, from a bitstream, number information relating to explicitly signaled height for slices in a tile of a current picture; based on the number information, parsing, from the bitstream, height information relating to explicitly signaled height for the slices, deriving heights of 0-th to (n−1)-th slices in the tile based on the height information; deriving the height of the n-th slice in the tile based on the height of the (n−1)-th slice; deriving a height of a last slice in the tile based on a remaining height.

    Image decoding method and apparatus

    公开(公告)号:US12212765B2

    公开(公告)日:2025-01-28

    申请号:US17915313

    申请日:2021-03-30

    Inventor: Hendry Hendry

    Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure comprises the steps of: obtaining image information including HRD-related information relating to a target OLS, wherein the target OLS is one of OLSs including a plurality of layers; determining whether an HRD parameter syntax structure relating to the target OLS exists, on the basis of the HRD-related information; deriving an HRD parameter syntax structure relating to the target OLS on the basis of a result of the determination; performing a DPB management process relating to a DPB on the basis of the HRD parameter syntax structure for the target OLS; and decoding a current picture on the basis of the DPB.

    Filtering-based image coding device and method

    公开(公告)号:US12192446B2

    公开(公告)日:2025-01-07

    申请号:US18215565

    申请日:2023-06-28

    Abstract: According to embodiments described herein, sub-pictures and/or virtual boundaries can be used for coding an image. For example, sub-pictures in the current picture can be used for predicting, reconstructing, and/or filtering the current picture. Virtual boundaries can be used for filtering reconstructed samples of the current picture. Through image coding based on the subpictures and/or virtual boundaries according to embodiments described herein, the subjective/objective quality of an image can be improved, and the consumption of hardware resources necessary for the coding can be reduced.

    Image coding device and method
    10.
    发明授权

    公开(公告)号:US12088812B2

    公开(公告)日:2024-09-10

    申请号:US17777241

    申请日:2020-11-17

    CPC classification number: H04N19/132 H04N19/117 H04N19/176 H04N19/82

    Abstract: In relation to an in-loop filtering procedure described in the present document, a virtual boundary is defined so as to further increase the subjective/objective visual quality of a restored picture and the in-loop filtering procedure can be applied across the virtual boundary. The virtual boundary can include, for example, a discontinuous edge such as a 360-degree image, a VR image, or picture in picture (PIP). For example, the virtual boundary can be at a predetermined appointed position, and the existence and/or the position thereof can be signaled. Embodiments of the present document present a method for efficiently signaling virtual boundary-related information.

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