Imaged document optical correlation and conversion system
US6741743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1998 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/88
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Optical correlation (OC) technology, previously used with great success to detect tanks and other weaponry in aerial imagery, is used in the present invention with imaged pages which are stored as image templates. An image template of a search word, a classification, an agency seal or a particular individual's signature becomes the basis of a user query. The target to be detected can be text as image (a search word, a classification) or image as image (an agency seal, a signature). The result is a faster (not one or two, but hundreds of times faster), flexible method of automatically identifying documents that match a target image template.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.