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    BI-PREDICTION FOR VIDEO CODING
    1.
    发明公开
    BI-PREDICTION FOR VIDEO CODING 审中-公开

    公开(公告)号：EP4294009A3

    公开(公告)日：2024-02-28

    申请号：EP23207616.6

    申请日：2019-09-26

    申请人： Vid Scale, Inc.

    发明人： HE, Yuwen ,  LUO, Jiancong ,  XIU, Xiaoyu ,  YE, Yan

    IPC分类号： H04N19/137 ,  H04N19/159

    摘要： Systems, methods, and instrumentalities may be provided for determining whether to bypass bidirectional optical flow (BDOF) if BDOF is used in combination with bi-prediction with coding unit (CU) weights (e.g., generalized bi-prediction (GBi)). A coding system may combine coding modes, coding techniques, and/or coding tools. The coding system may include a wireless transmit/receive unit (WTRU). For example, the coding system may combine BDOF and bi-prediction with CU weights (BCW). BDOF may include refining a motion vector associated with a current CU based at least in part on gradients associated with a location in the current CU. The coding system may determine that BDOF is enabled, and/or that bi-prediction with CU weights is enabled for the current CU. The coding system's determination that bi-prediction with CU weights is enabled and/or that BDOF is enabled may be based on one or more indications.