Methods for matching ridge orientation characteristic maps and associated finger biometric sensor
US7599530B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2004 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Feb 24, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1365
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for comparing a finger biometric verify ridge orientation characteristic map to a finger biometric enrollment ridge orientation characteristic map may include generating a first probability distribution function substantially for corresponding values of the verify and enrollment ridge orientation characteristic maps that differ from one another by less than or equal to a threshold difference. A second probability distribution function may be generated substantially for corresponding values of the verify and enrollment ridge orientation characteristic maps that differ from one another by more than the threshold difference. The verify ridge orientation characteristic map may be compared to the enrollment ridge orientation characteristic map to determine a match therewith based upon the first and second probability distribution functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.