Method of watermarking digital data

Details Method of watermarking digital data Method of watermarking digital data

2006-11-14

2006-11-14

Moise, Emmanuel L. (Department: 2137)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C708S514000, C708S520000, C382S253000

Reexamination Certificate

active

07137005

ABSTRACT:
A method of introducing a non-perceptional signal (watermark) to a digital media data is disclosed. The method is based on the representation of source digital data using a special matrix, insertion of a digital watermark into the special matrix to receive the watermarked matrix, and generation of the watermarked data using the source data and the watermarked matrix. In addition, watermark detection of the watermarked data is performed by calculating the special matrix from the watermarked data.

REFERENCES:
patent: 6611599 (2003-08-01), Natarajan
patent: 6678389 (2004-01-01), Sun et al.
patent: 6853676 (2005-02-01), Kim
F. Hartung and M. Kutter, Multimedia Watermarking Techniques, Proc. IEEE, vol. 87, No. 7, pp. 1079-1107, Jul. 1999.
Wolfgang et al., “Overview of image security techniques with applications in multimedia systems”, Proceedings of the SPIE Conference on Multimedia Networks: Security, Displays, Terminals, and Gateways, vol. 3228, Nov. 2-5, 1997, Dallas, Texas, pp. 297-308.

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