Biometric detection using spatial, temporal, and/or spectral techniques
US8355545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2008 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Mar 28, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/56
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A biometric feature detection system is provided according to one embodiment. The system may include a target, an illumination source, a color filter array, a light detector, and a computational unit. The illumination source illuminates a portion of the target with monochromatic light at a large angle of incidence measured from the normal of the target surface. The light detector may be configured to receive light from the target through the color-filter array and provide an image of the target surface. Each pixel of the light detector may correspond to one of a plurality of color filter mosaics such that each pixel detects light associated with a corresponding color filter. The computational unit may be interfaced with at least the light detector. The computational unit may include instructions to monitor the levels of monochromatic light and make proximity, presence and segmentation determinations based on the detected levels of monochromatic light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.