Method and apparatus for document classification from degraded images
US5909510A · kind A · utility
37Cited by
13References
22Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | May 19, 1997 |
| Grant date | Jun 1, 1999 |
| Priority date | — |
| Expiry date | May 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/246
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A word shape token-based document classification system prepares a plurality of sets of training data degraded by image quality and selects the optimum training data set by examining scores from a relevance measurement. The system achieves high accuracy from a wide range of image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.