POINT CLOUD GEOMETRY ENCODING METHOD, DECODING METHOD, ENCODING APPARATUS, AND DECODING APPARATUS

WIPO Patent Application WO/2021/196392

A1

Disclosed are a point cloud geometry encoding method, decoding method, encoding apparatus, and decoding apparatus. A point cloud is defined in a tree structure which contains multiple nodes having parent-child relationships, and a current node comprises K sub-nodes, where K is an integer greater than 1. The point cloud geometry decoding method comprises steps of: using a current sub-node as a K1-th point in an offset Morton order, where K1 is an integer less than or equal to K; determining occupation information of previous K2 neighbor sub-nodes of the current sub-node in the offset Morton order, where K2 is an integer less than K1; determining a context of the current sub-node according to the occupation information of the previous K2 neighbor sub-nodes of the current sub-node in the offset Morton order; and performing, according to the context of the current sub-node, entropy decoding on a point cloud geometry code stream. The point cloud geometry encoding method and decoding method provided by the invention improve utilization of geometry correlations between nodes, thereby improving point cloud geometry compression performance.

LI GE (CN)
SONG FEI (CN)
WANG JING (CN)
SHAO YITING (CN)
GAO WEN (CN)

PCT/CN2020/093810

October 07, 2021

June 01, 2020

Click for automatic bibliography generation  

PENG CHENG LAB (CN)
UNIV PEKING SHENZHEN GRADUATE SCHOOL (CN)

G06T3/40; G06T7/66; H04N19/91

US20190080483A1	2019-03-14
CN110572655A	2019-12-13
CN109993839A	2019-07-09
CN110418135A	2019-11-05
CN110853129A	2020-02-28
EP3579194A1	2019-12-11

JOHNSON INTELLECTUAL PROPERTY AGENCY (SHENZHEN) (CN)

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