Data processing apparatus and method, and memory medium
US6694040B2 · kind B2 · utility
11Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1999 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Jul 27, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0202
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This invention has as its object to provide a technique for embedding digital-watermark information in image data while minimizing deterioration of the original image quality. To this end, a data processing apparatus of this invention has input means for inputting image data consisting of a plurality of coefficients, and embedding means for embedding digital-watermark information in coefficients having values falling within a predetermined range of the input image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.