System for and method of securing fingerprint biometric systems against fake-finger spoofing
US7505613B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2006 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Sep 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/45
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A biometric secured system grants a user access to a host system by classifying a fingerprint used to verify or authorize the user to the system as real or fake. The classification is based on a probability that fingerprint image data corresponds to characteristics that reliably identify the finger as real. The system includes a fingerprint sensor for capturing fingerprint image data coupled to a spoof detection module. In one embodiment, the spoof detection module is programmed to determine spoof probability based on a combination of metrics that include, among other metrics, pixel gray level average and the variance of pixels corresponding to a fingerprint ridge, pixel gray level average and the variance of pixels corresponding to a fingerprint valley, density of sweat pores, and density of sweat streaks, to name a few metrics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.