- Patent Title: Methods and devices for tree switching in point cloud compression
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Application No.: US17767357Application Date: 2019-10-11
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Publication No.: US12155401B2Publication Date: 2024-11-26
- Inventor: Sébastien Lasserre , Jonathan Taquet , Gaëlle Christine Martin-Cocher
- Applicant: BlackBerry Limited
- Applicant Address: CA Waterloo
- Assignee: BlackBerry Limited
- Current Assignee: BlackBerry Limited
- Current Assignee Address: CA Waterloo
- Agency: Moffat & Co
- International Application: PCT/IB2019/001188 WO 20191011
- International Announcement: WO2021/069949 WO 20210415
- Main IPC: H03M7/40
- IPC: H03M7/40 ; H03M7/30

Abstract:
Methods and devices for coding point cloud data using volume trees and predicted-point trees. In one embodiment of the disclosure, a method of encoding a point cloud data to generate a bitstream of compressed point cloud data representing a three-dimensional location of a physical object is provided, the point cloud data being located within a volumetric space. The method includes compressing a first part of the point cloud data represented by a first tree of a first type; determining for a given node of the first tree if an assignation to a second type of tree is enabled, said given node still being processed for the first tree; when the assignation is enabled, compressing a second part of the point cloud data represented by a second tree of the second type wherein, features associated with a root node of the second tree are at least partially obtained from the given node.
Public/Granted literature
- US20220376702A1 METHODS AND DEVICES FOR TREE SWITCHING IN POINT CLOUD COMPRESSION Public/Granted day:2022-11-24
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