OCR method and apparatus using image equivalents
US5764799A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1995 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Jun 26, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An OCR 300 stores signals representative of reference characters and scans a document 302 to generate a bit mapped digitized image of the document. After the characters and the words are recognized and candidate characters are identified, the initial results are post-processed to compare clusters of identical images to the candidates. Where the candidates of all equivalent images in a cluster are the same, the candidates are output as representative of the image on the document. Where the candidates are different, a majority of identical candidates determines the recognized candidates. Other post-processing operations include verification and re-recognition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.