Character recognition method and apparatus based on 0-1 pattern representation of histogram of character image
US5926564A · kind A · utility
13Cited by
5References
10Claims
0Family size
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Key dates
| Filing date | Oct 5, 1995 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Oct 5, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Predetermined recognition units are extracted from an input document image. Histograms are prepared based on the extracted recognition units. By partially collating a 0-1 pattern representation extracted from the prepared histograms of each recognition unit with 0-1 pattern representations of respective recognition target categories, which are prepared in advance, candidates of recognition target categories corresponding to the recognition unit are retrieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.