Extended depth-of-field biometric system
US9727783B2 · kind B2 · utility
1Cited by
9References
34Claims
0Family size
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Key dates
| Filing date | Oct 12, 2016 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Oct 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20056
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An iris recognition system may include an optical system having an intentional amount of spherical aberration that results in an extended depth of field. A raw image of an iris captured by the optical system may be normalized. In some embodiments, the normalized raw image may be processed to enhance the MTF of the normalized iris image. An iris code may be generated from the normalized raw image or the enhanced normalized raw image. The iris code may be compared to known iris codes to determine if there is a match.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.