Verification method for determining areas within an image corresponding to monetary banknotes
US7738690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2006 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Apr 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/202
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Verification of areas within an image corresponding to banknotes includes dividing the image into a plurality of image sections; generating a banknote boundary map having border sections corresponding to a boundary of monetary banknotes within the image; generating a texture decision map having texture sections within a valid range according to a valid monetary banknote; determining a number of objects in the texture decision map by removing texture sections in the texture decision map that correspond to the border sections in the banknote boundary map; calculating a texture property value for each object; calculating a shape property value for each object; and further removing texture sections from the texture decision map corresponding to objects that do not have the texture property value within a first predetermined range and the shape property value within a second predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.