Fingerprint scanner auto-capture system and method
US6983062B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Jul 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/993
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method of capturing an acceptable fingerprint image is disclosed herein. The method includes a step of capturing an initial fingerprint image at a nominal image integration time. Once this initial fingerprint image is captured, a first intermediate fingerprint image at a first intermediate image integration time is captured. Next, an image darkness test is performed followed by an image definition test. If one or more of these tests indicates that the first intermediate fingerprint image is unacceptable, a subsequent intermediate fingerprint image at a subsequent intermediate image integration time is captured. This subsequent intermediate fingerprint image can be captured before the image definition test is performed. Additional intermediate fingerprint images can be captured until an image that has an acceptable darkness level as a well as an acceptable definition level is captured. Also disclosed is a fingerprint scanner that performs this method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.