Method and apparatus for embedding digital-watermark using robustness parameter
US7386149B2 · kind B2 · utility
4Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2007 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Apr 26, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0202
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus receives a document image and digital-watermark information and determines an embedding capacity based on a number of the letters in the document image. The apparatus determines whether or not the entire digital-watermark information is capable of being embedded in the document image based on the determined embedding capacity and embeds the digital-watermark information in the document image based on a result of the determination of whether or not the entire digital-watermark information is capable of being embedded in the document image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.