Optical identification method
US10552662B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2017 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Feb 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/15
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical identification method, includes: projecting light on a finger to generate reflected light from the finger; receiving the reflected light by a pixel sensing array to obtain a plurality of finger images; and determining whether the finger images present a liveness characteristic, according to a required exposure time or average brightness of the finger images obtained by the pixel sensing array. When the finger images present the liveness characteristic, the optical identification method further includes: determining identification information according to the finger images; or when the finger images do not present the liveness characteristic, the optical identification method further includes: not determining identification information according to the finger images, and optionally, stopping the pixel sensing array from obtaining a subsequent finger image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.