Biometric authentication device and biometric image output control method
US10068079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2015 |
| Grant date | Sep 4, 2018 |
| Priority date | — |
| Expiry date | Apr 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/67
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A biometric image output control method in a biometric authentication device comprises the step of generating a biometric image by imaging an living body to be authenticated; determining whether an imaging environment; if the imaging environment satisfies a predetermined recognition condition, controlling a change rate of a size of a biometric image, a change rate of a focal point of the biometric image and a change rate of a brightness of the biometric image according to a distance to the living body to be authenticated; and if the imaging environment does not satisfy the predetermined recognition condition, overly controlling at least one of the change rate of the size of the biometric image, the change rate of the focal point of the biometric image and the change rate of the brightness of the biometric image according to the distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.