Title:
PREDICTION ENCODING AND DECODING METHODS AND APPARATUSES FOR POINT CLOUD AZIMUTH INFORMATION
Document Type and Number:
WIPO Patent Application WO/2022/247716
Kind Code:
A1
Abstract:
Disclosed in the present invention are prediction encoding and decoding methods and apparatuses for point cloud azimuth information. The encoding method comprises: acquiring original point cloud data; obtaining depth information of a point cloud according to the original point cloud data; establishing a relationship between the depth information of the point cloud and azimuth information; and performing prediction encoding on the azimuth information of the point cloud by using the relationship between the depth information of the point cloud and the azimuth information to obtain code stream information. According to the prediction encoding method for point cloud azimuth information provided by the present invention, the precision of prediction for point cloud azimuth information is improved, the prediction residual of the azimuth information is reduced, and the prediction residual distribution of the azimuth is more concentrated, so that a more effective context model is established in an entropy encoding process, and the encoding efficiency of a point cloud is improved.
Inventors:
ZHANG WEI (CN)
YANG FUZHENG (CN)
DU YUXIN (CN)
ZOU WENJIE (CN)
YANG FUZHENG (CN)
DU YUXIN (CN)
ZOU WENJIE (CN)
Application Number:
PCT/CN2022/093678
Publication Date:
December 01, 2022
Filing Date:
May 18, 2022
Export Citation:
Assignee:
HONOR DEVICE CO LTD (CN)
International Classes:
H04N19/103; G06T9/00; H04N19/96
Domestic Patent References:
| WO2016185637A1 | 2016-11-24 | |||
| WO2021084292A1 | 2021-05-06 |
Foreign References:
| CN111699683A | 2020-09-22 | |||
| CN111009011A | 2020-04-14 | |||
| CN110991227A | 2020-04-10 | |||
| US20180053324A1 | 2018-02-22 | |||
| US20190051017A1 | 2019-02-14 | |||
| CN202110580220A | 2021-05-26 |
Other References:
AHN JAE-KYUN; LEE KYU-YUL; SIM JAE-YOUNG; KIM CHANG-SU: "Large-Scale 3D Point Cloud Compression Using Adaptive Radial Distance Prediction in Hybrid Coordinate Domains", IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, IEEE, US, vol. 9, no. 3, 1 April 2015 (2015-04-01), US , pages 422 - 434, XP011575879, ISSN: 1932-4553, DOI: 10.1109/JSTSP.2014.2370752
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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