Applying informed coding, informed embedding and perceptual shaping to design a robust, high-capacity watermark
US6996249B2 · kind B2 · utility
71Cited by
13References
40Claims
0Family size
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Key dates
| Filing date | Apr 4, 2002 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Dec 30, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2201/0202
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A watermark message embedded in a cover work can be made robust to various types of post-embedding operations, while simultaneously minimizing perceptual impact on the cover work. This is accomplished by the informed coding of the watermark message to be embedded. This is also accomplished by the informed embedding of the watermark message code in the cover work. Finally, the watermark message code may be perceptually shaped to minimize impact on the fidelity of the watermarked work. Further, these techniques may be combined for maximum effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.