Method and apparatus for reducing the effect of bleed-through on captured images
US6862117B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2000 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Mar 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0418
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are disclosed for reducing the effects of bleed-through on captured images. Multiple images of a single physical medium are recorded by illuminating the physical medium with at least one light source capable of generating light having a first and a second illumination quality. By combining the recorded images, a captured image with reduced bleed-through may be formed. Reflected light, transmitted light, or a combination of reflected and transmitted light from one or more illumination sources may be used in recording the images. The present invention finds application in photocopy devices, facsimile machines, optical recognition systems, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.