Character recognition employing compressed image data
US4426731A · kind A · utility
17Cited by
9References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 16, 1981 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Oct 16, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical character recognition system stores image data as a compressed run-length code. Preprocessing of characters for segmentation and registration is performed on the compressed data by means of tables created by a microprocessor. Only the image data required for recognition is expanded for the recognition process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.