Multimedia data embedding
US6442283B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1999 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Jan 11, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Multimedia data embedding, such as video, image or audio data watermarking. In one embodiment, a computer-implemented method first receives a vector x of N data samples, where X=[x(0)x(1) . . . x(N−1)] and represents multimedia. Next, the method receives a vector p, where P=[p(0)p(1) . . . p(N−1)] and represents a pseudo-random sequence. Finally, the method generates a new vector x′ in which the vector p is embedded in the vector x, such that x′=[x′(0)x′(1) . . . x′(N−1)] and x′=x+aq, where a comprises a perception-based scaling factor and the vector q comprises a perceptually weighted pseudo-random sequence based on the vector p.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.