Pattern features extracting apparatus and method
US4543660A · kind A · utility
34Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1983 |
| Grant date | Sep 24, 1985 |
| Priority date | — |
| Expiry date | Apr 14, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/75
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A plurality of different mask pattern data which are indicated by values obtained from Hermitte's polynomials of different degrees weighted by a Gaussian function are stored in mask memories, respectively. Each mask pattern data stored in each of the mask memories is convolved by a sum-of-product circuit together with unknown input pattern data. A plurality of extracted pattern feature data are stored in pattern feature memories.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.