Phased illumination method for image capture system
US8203764B2 · kind B2 · utility
8Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2007 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jan 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/02497
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Imaging devices and methods that permit the capture of digital images of an original document sequentially illuminated by a plurality of light sources. In one aspect, a first digital image is captured using illumination from a first illumination angle, a second digital image is captured using illumination from a second illumination angle, and the first and second digital images are combined to obtain a composite digital image of the document. The obtained composite digital image is free of reflection artifacts corresponding to the first and second illumination angles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.