System and method for counting ridges in a captured print image
US6996259B2 · kind B2 · utility
8Cited by
166References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Aug 28, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1347
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for counting ridges in a captured print image frame is described. A pixel path through the captured print image frame is traversed. A hysteresis band for the pixel path is determined. A number of crossings of the determined hysteresis band is counted while traversing the pixel path. A number of print ridges based on the counted number of hysteresis band crossings is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.