Title:
METHODS AND DEVICES FOR POINT CLOUD PREDICTION, POINT CLOUD ENCODING, AND POINT CLOUD DECODING
Document Type and Number:
WIPO Patent Application WO/2023/025174
Kind Code:
A1
Abstract:
Disclosed are methods and devices for point cloud prediction, point cloud encoding and point cloud decoding. The point cloud prediction method comprises: obtaining an encoded candidate point according to an encoded point in a point cloud; obtaining a geometric distance between a point to be encoded and the encoded candidate point according to the position of the point to be encoded in the point cloud and the position of the encoded candidate point in the point cloud; obtaining an attribute distance between the point to be encoded and the encoded candidate point according to encoded attribute information corresponding to the encoded candidate point and encoded attribute information corresponding to the point to be encoded; obtaining an encoded matching point according to the geometric distance and the attribute distance; and according to the encoded matching point, predicting an attribute to be encoded corresponding to the point to be encoded to obtain a prediction value. The present invention better takes into account a relationship between the attribute of the encoded point and the attribute of the point to be encoded, obtaining a more accurate prediction value, and improving a point cloud encoding effect.
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Inventors:
ZHANG WEI (CN)
WANG JING (CN)
LI GE (CN)
GAO WEN (CN)
WANG JING (CN)
LI GE (CN)
GAO WEN (CN)
Application Number:
PCT/CN2022/114386
Publication Date:
March 02, 2023
Filing Date:
August 24, 2022
Export Citation:
Assignee:
UNIV XIDIAN (CN)
PENG CHENG LAB (CN)
PENG CHENG LAB (CN)
International Classes:
G06T15/00; G06T17/00; H04N19/593
Domestic Patent References:
| WO2020191258A1 | 2020-09-24 |
Foreign References:
| CN114009046A | 2022-02-01 | |||
| US20200111236A1 | 2020-04-09 |
Attorney, Agent or Firm:
JOHNSON INTELLECTUAL PROPERTY AGENCY (SHENZHEN) (CN)
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