Multispectral liveness determination
US7539330B2 · kind B2 · utility
46Cited by
218References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2005 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Jul 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1324
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems are provided for determining a liveness state of purported tissue. The purported tissue is illuminated under a plurality of distinct optical conditions during a single illumination session. Light scattered from the purported tissue is received separately for each of the plurality of distinct optical conditions. A multispectral image of the purported tissue is derived from the received light. It is verified that the derived multispectral image is consistent with living tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.