Method of classifying a finger touch in respect of finger pressure and fingerprint sensing system
US10782821B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2018 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Feb 26, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of classifying a finger touch in respect of a finger pressure on a surface of a fingerprint sensor, comprising the steps of: receiving, on the surface of the fingerprint sensor, a finger having a fingerprint topography; acquiring a first time-sequence of fingerprint images; determining a reference value of at least one image-related parameter indicative of a compression of the fingerprint topography, based on at least one fingerprint image in the first time-sequence of fingerprint images; acquiring a second time-sequence of fingerprint images; determining a test value of the at least one image-related parameter based on at least one fingerprint image in the second time-sequence of fingerprint images; and classifying the finger touch based on a relation between the test value and the reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.