Method and apparatus for detecting vertical direction of document
US5923790A · kind A · utility
9Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1996 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Jan 23, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and an apparatus for reliably detecting the upside and downside vertical direction of an image, such as characters on a document. The method involves judging the upside and downside vertical direction of the characters in each line, and specifying the upside and downside vertical direction of the characters on the entire image on the basis of the vertical directions detected line by line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.