Optical authentication of objects based on latent structural characteristics
US11030453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2015 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Dec 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/60
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are described for using optical techniques to authenticate a pre-characterized object according to its latent structural characteristics. For example, an image stack can be generated by aligning enrollment images acquired from an enrollment object according to different optical geometries. Enrollment basis functions can be computed from the stack that describe latent structural characteristics of the enrollment object, and enrollment magnitudes can be extracted from those basis functions. Subsequently, another image stack can be generated by aligning authentication images acquired from an authentication object according to different optical geometries. Authentication basis functions can be computed from the stack to describe latent structural characteristics of the authentication object, and authentication magnitudes can be extracted from those basis functions. A mathematical correspondence can be computed between the enrollment and authentication magnitudes, from which a determination can be made as to whether the authentication object is the enrollment object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.