公开(公告)号：US20230419554A1

公开(公告)日：2023-12-28

申请号：US18252872

申请日：2020-11-27

Applicant: PENG CHENG LABORATORY

Inventor： Yueru CHEN ,  Jing WANG ,  Wenbo ZHAO ,  Ge LI ,  Wen GAO

IPC: G06T9/00 ,  G06T9/40

CPC classification number: G06T9/001 ,  G06T9/40

Abstract: A point cloud attribute encoding method, a decoding method, an encoding device and a decoding device are disclosed, the point cloud attribute encoding method including: constructing an N-layer binary tree by partitioning a target point cloud according to positions of points within the point cloud, N being an integer greater than 1; for a target node at layer P of the binary tree, obtaining child nodes of the target node, determining a first attribute coefficient and second attribute coefficients of the target node by transforming first attribute coefficients of the child nodes, P being an integer greater than or equal to 1 and less than or equal to N−1; using the first attribute coefficient of a root node and the second attribute coefficients of each target node in the binary tree as output coefficients of the point cloud attribute encoding method.