Currency validation
US7639858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2004 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Mar 1, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/2075
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for developing a template of a reference document, such as a bank note and using that template to validate other test documents. The method involves using images of a plurality of reference documents, such as banknotes and segmenting each image in a like manner into a plurality of segments. Each segment is then classified using a one-class classifier to determine a reference classification parameter. These parameters are used to define a threshold reference classification parameter. Optionally, the step of segmenting is optimized to determine a preferred number of segments, and a preferred combination of these for use in a subsequent validation process. Preferably, this is done using a stochastic algorithm such as a genetic algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.