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    Systems and methods for liner model derivation
    1.
    发明授权
    Systems and methods for liner model derivation 有权

    公开(公告)号：US12113991B2

    公开(公告)日：2024-10-08

    申请号：US18324684

    申请日：2023-05-26

    申请人： ALIBABA GROUP HOLDING LIMITED

    发明人： Xinwei Li ,  Jie Chen ,  Ru-Ling Liao ,  Yan Ye

    IPC分类号： H04N19/196 ,  H04N19/159 ,  H04N19/184 ,  H04N19/44

    CPC分类号： H04N19/196 ,  H04N19/159 ,  H04N19/184 ,  H04N19/44

    摘要： A video data processing method includes receiving a bitstream; decoding an index associated with a coding unit based on the bitstream, the index indicating a selection mode among at least four selection modes; determining whether a plurality of top neighboring samples and a plurality of left neighboring samples are available; determining four samples based on the index; determining two parameters based on the four samples; determining predicted samples of the coding unit based on the two parameters; and decoding the coding unit based on the predicted samples; wherein determining the four samples based on the index further comprises: determining the four samples based on an availability of the plurality of the top neighboring samples and the plurality of the left neighboring samples.

    Inter prediction methods for coding video data
    5.
    发明授权
    Inter prediction methods for coding video data 有权

    公开(公告)号：US11206425B2

    公开(公告)日：2021-12-21

    申请号：US16805537

    申请日：2020-02-28

    申请人： ALIBABA GROUP HOLDING LIMITED

    发明人： Ru-Ling Liao ,  Yan Ye ,  Jie Chen

    IPC分类号： H04N19/577 ,  H04N19/61 ,  H04N19/13 ,  H04N19/176

    摘要： The present disclosure provides systems and methods for inter prediction process in video data coding. One exemplary method comprises: selecting one of a DMVR process and a BDOF process, based on a video bitstream; and inter predicting an image block based on the selected process. The selection can be made either through explicit signaling, or implicit derivation at the decoder side. According to one exemplary method, selecting the one of the DMVR process and the BDOF process can be performed by selecting the one of the DMVR process and the BDOF process based on: a flag signaled at at least one of a coding unit (CU) level and a coding tree unit (CTU) level, or a merge candidate index associated with an extended merge candidate list.

    Method and system for processing video content
    8.
    发明授权
    Method and system for processing video content 有权

    公开(公告)号：US11902581B2

    公开(公告)日：2024-02-13

    申请号：US18059105

    申请日：2022-11-28

    申请人： ALIBABA GROUP HOLDING LIMITED

    发明人： Yan Ye ,  Jie Chen ,  Ru-Ling Liao

    IPC分类号： H04N19/61 ,  H04N19/124 ,  H04N19/176 ,  H04N19/186

    CPC分类号： H04N19/61 ,  H04N19/124 ,  H04N19/176 ,  H04N19/186

    摘要： Embodiments of the present disclosure provides systems and methods for processing video content. The methods include: reconstructing a plurality of luma samples associated with a picture; and reconstructing a chroma block associated with the picture. The reconstructing of the chroma block includes: determining whether the chroma block has non-zero residues; and in response to a determination that the chroma block has one or more non-zero chroma residues, determining an averaged value of the plurality of reconstructed luma samples, and scaling residues of the chroma block based on the averaged value, prior to reconstructing the chroma block.

    Matrix weighted intra prediction of video signals
    9.
    发明授权
    Matrix weighted intra prediction of video signals 有权

    公开(公告)号：US11838541B2

    公开(公告)日：2023-12-05

    申请号：US16940692

    申请日：2020-07-28

    申请人： ALIBABA GROUP HOLDING LIMITED

    发明人： Xinwei Li ,  Ru-Ling Liao ,  Yamei Chen ,  Jie Chen ,  Yan Ye ,  Jiancong Luo

    IPC分类号： H04N19/176 ,  H04N19/593

    CPC分类号： H04N19/593 ,  H04N19/176

    摘要： The present disclosure provides methods for performing simplified matrix weighted intra prediction. The method can include: determining a classification of a target block; and generating, based on the classification, a matrix-weighted intra prediction (MIP) signal, wherein determining the classification of the target block comprises: in response to the target block having a size of 4×4, determining that the target block belongs to a first class; or in response to the target block having a size of 8×8, 4×N or N×4, N being an integer between 8 and 64, determining that the target block belongs to a second class.