Method of watermarking for binary images
US7499565B2 · kind B2 · utility
3Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 2004 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Feb 4, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0083
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technology of digital watermarking for binary images (including documents) is provided, which is capable of adjusting the amount of information to be embedded while avoiding the deterioration of image quality as far as possible. The watermark information is inserted by giving the standard for judgment of modification and the order of preference for modification according to the characteristic properties of the human visual sense for binary images and performing modification on pixels sequentially in the descending order of preference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.