Point cloud compression using fixed-point numbers
US11276203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2020 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Nov 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/001
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system comprises an encoder configured to compress attribute information for a point cloud and/or a decoder configured to decompress compressed attribute information. Attribute values for at least one starting point are included in a compressed attribute information file and attribute correction values are included in the compressed attribute information file. Attribute values are predicted based, at least in part, on attribute values of neighboring points. The predicted attribute values are compared to attribute values of a point cloud prior to compression to determine attribute correction values. In order to improve computing efficiency and/or repeatability, fixed-point number representations are used when determining predicted attribute values and attribute correction values. A decoder follows a similar prediction process as an encoder and corrects predicted values using attribute correction values included in a compressed attribute information file using fixed-point number representations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.