Decoding hidden data from imagery
US7068812B2 · kind B2 · utility
17Cited by
55References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2005 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Mar 7, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/327
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital image in which hidden information has been encoded, is processed to discern the hidden information. This processing can include identifying geometric distortions of the image (e.g., cropping, scaling, rotation), and compensating for such identified distortions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.