Multispectral biometric imaging
US7394919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2005 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Oct 8, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1394
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems are provided for performing a biometric measurement on an individual. A purported skin site of the individual disposed relative to a platen is illuminated under distinct optical conditions during a single illumination session. At least one of the optical conditions includes illuminating the purported skin site with light at an angle greater than a critical angle defined by an interface of the platen with an external environment. At least another of the distinct optical conditions includes illuminating the purported skin site with light at an angle less than the critical angle. Light scattered from the purported skin site is received separately for each of multiple optical conditions to derive a multispectral image of the purported skin site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.