Method for characterizing texture of areas within an image corresponding to monetary banknotes
US7885450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2006 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Jul 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/56
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for characterizing texture of areas within an image corresponding to monetary banknotes includes dividing the image into a plurality of sections; calculating a gray level for each section; selecting potential sections from the sections, the potential sections having gray levels within a predetermined range; selecting bill sections from the potential sections, the bill sections having pixels within a predefined color range and a predefined continuous color gradient range; generating a binary edge map according to gray levels of pixels within the bill sections; and calculating a texture value for each bill section according to the binary edge map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.