Digital image capture apparatus and method for obtaining a digital image of an object
US7619664B2 · kind B2 · utility
11Cited by
14References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2005 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | May 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/2116
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital image capture apparatus is provided which is arranged to capture at least two images of a document and combine the images to produce a final image in which the effects of specular reflection and/or ambient light are removed. The apparatus includes a light source and a first image is captured with the source illuminating the document. A second ambient image is captured with the light source switched off, and the images are combined either by subtracting the ambient image from the first image or by replacing areas of the first image by corresponding areas of the ambient image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.