Optical information detection method, device and equipment
US12142007B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2022 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Feb 2, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/761
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical information detection method includes: acquiring a first image captured by a first imaging device, wherein the first image comprises a target full-field projection pattern; extracting features from the first image to obtain first feature information; acquiring second feature information and first graphic information of a reference full-field projection pattern, wherein the first graphic information comprises zero-order information and/or secondary information; calculating a first mapping relationship between the first feature information and the second feature information; mapping the first graphic information to the target full-field projection pattern according to the first mapping relationship, to obtain second graphic information corresponding to the target full-field projection pattern; and calculating target optical information according to the second graphic information. The above-mentioned method is compatible with cases in which, regardless of whether a zero-order speckle pattern is globally unique or not, optical information can be accurately detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.