Detection of undesired document alteration and duplication, and generating verification data for such detection
US7715055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2004 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Apr 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0051
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Exemplary embodiments of the present invention provide an image processing apparatus, system, method, computer program and product, capable of generating verification data for detecting document alteration, generating a protected document embedded with the verification data, and detecting document alteration using the verification data. Other exemplary embodiments of the present invention provide an image processing apparatus, system, method, computer program and product, capable of generating verification data for detecting image alteration or document duplication, generating a protected document embedded with the verification data, and detecting image alteration or document duplication using the verification data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.