Multispectral iris fusion for enhancement and interoperability
US8345936B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2009 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Jun 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/143
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A multispectral iris recognition system includes a multispectral camera adapted to acquire spatially registered iris images simultaneously in at least three wavelengths and a database adapted to store the acquired iris images. A texture analysis section identifies an area within each acquired iris image having a maximum texture at each of the wavelengths. The identified areas are combined to generate an enhanced iris image. Additionally, a visible light iris image is acquired and stored along with a set of transformation mappings in a database. The acquired visible light iris image is modeled in a texture model, which clusters textures from the acquired visible light iris image. A mapping is selected from the database for each of the clusters. The selected mappings are applied to the acquired visible light iris image to generate a Near-Infrared equivalent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.