High speed character matcher and method
US4288782A · kind A · utility
33Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Aug 24, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/751
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A high speed character matcher and method for measuring the similarity between a pair of binary patterns representing two-dimensional images. The patterns are compared on a bit by bit basis and when a discrepancy is detected, it is assigned an error penalty which is based on the two-dimensional context in which the error occurred. The types of error context which are typical in the comparison of distorted but otherwise similar characters are given a lower error than those typically encountered in the comparison of dissimilar characters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.