Pattern recognition system and method using neural network
US5255342A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1992 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Dec 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/75
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An inner product computing unit computes inner products of an input pattern whose category is unknown, and orthogonalized dictionary sets of a plurality of reference patterns whose categories are known. A nonlinear converting unit nonlinearly converts the inner products in accordance with a positive-negative symmetrical nonlinear function. A neural network unit or a statistical discriminant function computing unit performs predetermined computations of the nonlinearly converted values on the basis of preset coefficients in units of categories using a neural network or a statistical discriminant function. A determining section compares values calculated in units of categories using the preset coefficients with each other to discriminate a category to which the input pattern belongs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.