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    VIDEO ENCODING AND DECODING METHOD USING TILES AND TILE GROUPS, AND VIDEO ENCODING AND DECODING DEVICE USING TILES AND TILE GROUPS
    11.
    发明申请
    VIDEO ENCODING AND DECODING METHOD USING TILES AND TILE GROUPS, AND VIDEO ENCODING AND DECODING DEVICE USING TILES AND TILE GROUPS 有权

    公开(公告)号：US20230070926A1

    公开(公告)日：2023-03-09

    申请号：US17986052

    申请日：2022-11-14

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Woongil CHOI ,  Gahyun RYU ,  Minsoo PARK ,  Minwoo PARK ,  Yumi SOHN ,  Seungsoo JEONG ,  Narae CHOI ,  Anish TAMSE

    IPC: H04N19/513 ,  H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176

    Abstract: Provided is a video decoding method including: determining whether or not to perform history-based motion vector prediction for inter-prediction of a current block, based on a location of the current block in a tile including a plurality of largest coding units; when it is determined to perform the history-based motion vector prediction on the current block, generating a motion information candidate list including history-based motion vector candidates; determining a motion vector of the current block by using a motion vector predictor determined from the motion information candidate list; and reconstructing the current block by using the motion vector of the current block, wherein, when a motion constraint is applied to a first tile group, when a reference picture of a first tile from among tiles included in the first tile group is a second picture, a motion vector of the first tile is not permitted to indicate a block of the second picture, the block being located outside a second tile group, and when the motion constraint is not applied to the first tile group, the motion vector of the first tile is permitted to indicate the block of the second picture, the block being located outside the second tile group.

    IMAGE ENCODING METHOD AND DEVICE, AND IMAGE DECODING METHOD AND DEVICE
    14.
    发明申请
    IMAGE ENCODING METHOD AND DEVICE, AND IMAGE DECODING METHOD AND DEVICE 有权

    公开(公告)号：US20220086444A1

    公开(公告)日：2022-03-17

    申请号：US17532435

    申请日：2021-11-22

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Yinji PIAO ,  Minsoo PARK ,  Minwoo PARK ,  Seungsoo JEONG ,  Kiho CHOI ,  Narae CHOI ,  Woongil CHOI ,  Anish TAMSE

    IPC: H04N19/129 ,  H04N19/96 ,  H04N19/46 ,  H04N19/18 ,  H04N19/176

    Abstract: An image encoding/decoding method and an apparatus thereof are provided. The decoding method includes: determining a coding unit by splitting an image; determining a transform unit in the coding unit; determining whether to decode residual data of the transform unit according to a transform skip mode; obtaining a significant subgroup flag about a subgroup in the transform unit; based on the significant subgroup flag indicating that the subgroup includes at least one non-zero significant coefficient and scanning information about coefficients of the subgroup, obtaining a first bin about a significant coefficient flag, a sign flag, a first flag, and a parity flag of a coefficient of a scan position; obtaining the residual data including a coefficient in the subgroup based on the base level and a remainder of an absolute value excluding the base level; and obtaining a reconstruction block of the coding unit, based on the residual data.

    METHOD AND DEVICE FOR DECODING VIDEO, AND METHOD AND DEVICE FOR ENCODING VIDEO
    16.
    发明申请
    METHOD AND DEVICE FOR DECODING VIDEO, AND METHOD AND DEVICE FOR ENCODING VIDEO 有权

    公开(公告)号：US20220007025A1

    公开(公告)日：2022-01-06

    申请号：US17475815

    申请日：2021-09-15

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Anish TAMSE ,  Minwoo PARK ,  Woongil CHOI

    IPC: H04N19/13

    Abstract: A video decoding method includes obtaining an initial value of a context model for a syntax element, determining, based on the initial value, slope size information, slope sign information, offset size information, and offset sign information of the context model, determining an initial probability of the context model based on the slope size information, the slope sign information, the offset size information, the offset sign information, and a quantization parameter, obtaining at least one bin of a symbol indicating the syntax element by performing context adaptive binary arithmetic coding (CABAC) decoding based on the initial probability of the context model, and reconstructing a video based on the at least one bin.

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