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    ENCODING/DECODING OCCUPANCY INFORMATION OF A CURRENT NODE OF A TREE REPRESENTING POINT CLOUD GEOMETRY DATA
    53.
    发明公开
    ENCODING/DECODING OCCUPANCY INFORMATION OF A CURRENT NODE OF A TREE REPRESENTING POINT CLOUD GEOMETRY DATA 审中-公开

    公开(公告)号：EP4242969A1

    公开(公告)日：2023-09-13

    申请号：EP22305272.1

    申请日：2022-03-10

    申请人： Beijing Xiaomi Mobile Software Co., Ltd.

    发明人： LASSERRE, Sebastien ,  TAQUET, Jonathan

    IPC分类号： G06T9/00 ,  G06T9/40 ,  H04N19/13 ,  H04N19/91 ,  H04N19/96

    摘要： There is provided methods and apparatus of encoding/decoding occupancy information of a current node of a tree representing point cloud geometry data, said occupancy information associated with the current node comprising an occupancy bit (b 0 , b 7 ) per child node of the current node to indicate whether the child node is occupied when at least one point of the point cloud is associated with it or unoccupied otherwise, wherein encoding/decoding (110,210) a first occupancy bit (bo), associated with a first child node of the current node comprises:
    - determining (111,211) a series of at least one bit ( β 1 ,..., β K ) comprising at least one bit representative of occupancy information of a set of neighboring nodes relative to the first child node; and
    - entropy encoding (112,212), into the bitstream, the first occupancy bit (bo) based on the series of at least one bit ( β 1 , ..., β K ) .

    POINT CLOUD SEQUENCE ENCODING/DECODING METHOD AND APPARATUS BASED ON TWO-DIMENSIONAL REGULARIZATION PLANE PROJECTION
    54.
    发明公开
    POINT CLOUD SEQUENCE ENCODING/DECODING METHOD AND APPARATUS BASED ON TWO-DIMENSIONAL REGULARIZATION PLANE PROJECTION 审中-公开

    公开(公告)号：EP4228265A1

    公开(公告)日：2023-08-16

    申请号：EP22749248.5

    申请日：2022-02-07

    申请人： Honor Device Co., Ltd.

    发明人： YANG, Fuzheng ,  ZHANG, Wei

    IPC分类号： H04N19/50 ,  G06T9/00

    摘要： The present invention discloses a point cloud sequence encoding/decoding method and apparatus based on two-dimensional regularized plane projection. The encoding method includes: acquiring reference-frame point cloud data and current-frame point cloud data; performing two-dimensional regularized plane projection on the reference-frame point cloud data to obtain a first two-dimensional projection plane structure, and performing two-dimensional regularized plane projection on the current-frame point cloud data to obtain a second two-dimensional projection plane structure; performing motion compensation and encoding on one or more pieces of first two-dimensional graphic information obtained based on the first two-dimensional projection plane structure and one or more pieces of second two-dimensional graphic information obtained based on the second two-dimensional projection plane structure to obtain bit stream information of the current-frame point cloud data; and repeating the foregoing steps until all frames of a point cloud sequence are encoded. The present invention can fully utilize spatio-temporal correlation of a point cloud sequence for encoding the point cloud sequence, which reduces temporal and spatial redundancy of the point cloud sequence and improves encoding efficiency.

    IMAGE PROCESSING APPARATUS AND METHOD
    59.
    发明公开
    IMAGE PROCESSING APPARATUS AND METHOD 审中-公开

    公开(公告)号：EP4221219A1

    公开(公告)日：2023-08-02

    申请号：EP23164739.7

    申请日：2012-01-04

    申请人： Velos Media International Limited

    发明人： SATO, Kazushi

    IPC分类号： H04N19/176 ,  G06T9/00 ,  H04N19/70 ,  H04N19/46 ,  H04N19/30 ,  H04N19/117 ,  H04N19/12 ,  H04N19/132 ,  H04N19/152 ,  H04N19/157 ,  H04N19/184 ,  H04N19/82 ,  H04N19/85

    摘要： The present technology relates to an image processing apparatus and method that are capable of enhancing encoding efficiency while suppressing a decrease in the efficiency of encoding processing. The image processing apparatus includes an encoding mode setter that sets, in units of coding units having a hierarchical structure, whether a non-compression mode is to be selected as an encoding mode for encoding image data, the non-compression mode being an encoding mode in which the image data is output as encoded data, and an encoder that encodes the image data in units of the coding units in accordance with a mode set by the encoding mode setter. The present disclosure can be applied to, for example, an image processing apparatus.