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    METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING WITH PARTIALLY SHARED LUMA AND CHROMA CODING TREES
    1.
    发明公开
    METHOD AND APPARATUS FOR VIDEO ENCODING AND DECODING WITH PARTIALLY SHARED LUMA AND CHROMA CODING TREES 审中-公开

    公开(公告)号：EP4329307A2

    公开(公告)日：2024-02-28

    申请号：EP23215052.4

    申请日：2019-05-21

    申请人： InterDigital VC Holdings, Inc.

    发明人： LELEANNEC, Fabrice ,  GALPIN, Franck ,  POIRIER, Tangi ,  RATH, Gagan

    IPC分类号： H04N19/593

    摘要： Different implementations are described, particularly implementations for video encoding and decoding based on wherein the partitioning tree structure is partially shared between luma and chroma blocks are presented. According to an implementation, a single partitioning tree structure is shared between luma and chroma blocks from a root node of the partitioning tree down to a switching node and a dual partitioning tree structure is determined for luma and chroma blocks from the switching node down to a leaf node of the partitioning tree. Thus, this implementation optimizes the coding efficiency by allowing separated trees for smaller blocks, while limiting the complexity of decoding pipeline.

    METHOD AND APPARATUS FOR INTRA PREDICTION BOUNDARY FILTERING WITH MULTIPLE REFERENCE LAYERS IN VIDEO ENCODING AND DECODING
    5.
    发明公开
    METHOD AND APPARATUS FOR INTRA PREDICTION BOUNDARY FILTERING WITH MULTIPLE REFERENCE LAYERS IN VIDEO ENCODING AND DECODING 审中-公开

    公开(公告)号：EP3531702A1

    公开(公告)日：2019-08-28

    申请号：EP18305198.6

    申请日：2018-02-26

    申请人： InterDigital VC Holdings, Inc.

    发明人： ROBERT, Antoine ,  POIRIER, Tangi ,  RATH, Gagan ,  URBAN, Fabrice

    IPC分类号： H04N19/86 ,  H04N19/82 ,  H04N19/159 ,  H04N19/593 ,  H04N19/117 ,  H04N19/182

    摘要： After initial intra prediction based on projection along an intra prediction direction, there may exist discontinuities between the predicted block and neighboring blocks. To smooth the block boundary, boundary filtering may be used for intra prediction. In particular, different methods that use multiple reference layers may be used for boundary filtering. Which filtering method to be used may be selected adaptively based on the intra prediction mode. When gradient-based filtering is selected, the gradient at a reference sample, that is at the same row or column as the current sample, in a reference layer is calculated as the difference between the reference sample and the predicted value for the reference sample using the intra prediction mode. Additional gradient at another reference sample from another reference layer may also be used. Then the initially predicted value for the sample maybe adjusted based on the gradient(s) and a decay function.