Method and apparatus for optical fingerprint recognition using multiple exposure
US9152839B2 · kind B2 · utility
4Cited by
1References
10Claims
0Family size
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Key dates
| Filing date | Jun 14, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Sep 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1365
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for an optical fingerprint recognition, the method includes scanning a fingerprint image separately using a multiple exposure which allows alternating a short exposure and a normal exposure; determining whether there is an inflow of external light depending on a darkness level of a fingerprint image derived from the normal exposure; and performing a fingerprint recognition using a fingerprint image derived from the short exposure or the fingerprint image derived from the normal exposure in accordance with the determination result as to the inflow of external light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.