Document periscope
US6512539B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A composite higher resolution image of an object can be obtained by combining or patching together multiple low-resolution camera images to form a composite image having a higher resolution. Each low-resolution camera image represents a subsection of an object (also referred to as “object subsection”) to be scanned. For example, each subsection may represent a quadrant of a document page. With the use of a periscope, the image visible to the camera can be shifted to capture images of the various object subsections. Mosaicing techniques are used to combine these camera images into a composite image of the object. This approach to scanning improves the resolution of documents scanned while using existing low cost video cameras.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.