Image-based liveness detection for ultrasonic fingerprints
US9633269B2 · kind B2 · utility
22Cited by
4References
28Claims
0Family size
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Key dates
| Filing date | Sep 3, 2015 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Sep 3, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20072
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A liveness-detection method and/or system is disclosed. A method of detecting liveness can comprise obtaining a single ultrasonic image of a biometric object. The single ultrasonic image can be subdivided into a plurality of overlapping sample blocks. Feature vectors can be extracted in a spatial domain and a frequency domain from each of the plurality of sample blocks. The feature vectors can be compared from each of the plurality of sample blocks to a classification model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.