Fake finger detection based on transient features
US11216681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2020 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Jun 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/45
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a method for determining whether a finger is a real finger at an ultrasonic fingerprint sensor, a sequence of images of a fingerprint of a finger are captured at an ultrasonic fingerprint sensor, wherein the sequence of images includes images captured during a change in contact state between the finger and the ultrasonic fingerprint sensor. A plurality of transient features of the finger is extracted from the sequence of images. A classifier is applied to the plurality of transient features to classify the finger as one of a real finger and a fake finger. It is determined whether the finger is a real finger based on an output of the classifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.