Fingerprint image processing device and fingerprint image processing method
US6445811B1 · kind B1 · utility
5Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1999 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Mar 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1347
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint image processing device and fingerprint image processing method used for instance in fingerprint check devices which reliably processes the fingerprint image by detecting the ripple DM of the brightness level of the fingerprint image and starts the processing of a fingerprint image based on the ripple DM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.