Method and apparatus for compressed-domain watermarking

Image analysis – Applications

Reexamination Certificate

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C382S288000, C380S205000

Reexamination Certificate

active

07418110

ABSTRACT:
A method and apparatus for inserting a low frequency watermark into a compressed data stream carrying compressed content is disclosed. A portion of the compressed data stream is decoded to generate decoded content. The decoded content is analyzed to generate watermark insertion information. The compressed content is embedded with a low frequency watermark using the watermark insertion information.

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patent: 7113615 (2006-09-01), Rhoads et al.
International Search Report dated Dec. 29, 2004 from corresponding PCT application, PCT/US04/19630.
Jack Lacy et al., “Intellectual Property Protection Systems and Digital Watermarking”, Optics Express 478, vol. 3, No. 12, Dec. 7, 1998.

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