Point cloud attribute entropy encoding method and device, and point cloud attribute entropy decoding method and device
US12406398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2022 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Apr 3, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a point cloud attribute entropy encoding method and device, and a point cloud attribute entropy decoding method and device. The encoding method comprises: if an overall encoding processing condition of point cloud attribute residual coefficients is satisfied, performing overall encoding processing on the point cloud attribute residual coefficients, and then ending the encoding; and if not, performing local one-by-one encoding processing on the point cloud attribute residual coefficients until the encoding is ended. The entropy decoding method comprises: if an overall decoding processing condition of the point cloud attribute residual coefficients is satisfied, performing overall decoding processing on the point cloud attribute residual coefficients, and then ending the decoding; and if not, performing local one-by-one decoding processing on the point cloud attribute residual coefficients until the decoding is ended. The present invention better utilizes redundant information in a point cloud and improves compression performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.