Multi-carrier watermarks using carrier signals modulated...

Details Multi-carrier watermarks using carrier signals modulated... Multi-carrier watermarks using carrier signals modulated...

2005-07-05

2005-07-05

Johns, Andrew W. (Department: 2621)

Image analysis

Applications

C380S252000

Reexamination Certificate

active

06915002

ABSTRACT:
A watermark embedder encodes auxiliary information, such as a binary message, into a host media signal by modulating message signals with two or more corresponding carrier signals to form a watermark signal and embeds this signal into the host. A compatible watermark decoder uses the carrier signals to demodulate the message signals from the watermarked signal.

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