Encoding and decoding signals for digital watermarking

Details Encoding and decoding signals for digital watermarking Encoding and decoding signals for digital watermarking

2006-05-16

2009-02-10

Azarian, Seyed (Department: 2624)

Image analysis

Applications

C382S235000, C380S210000

Reexamination Certificate

active

07489801

ABSTRACT:
This disclosure describes methods and systems for encoding a digital watermark into and/or detecting a digital watermark from a host (or media) signal such as audio, video or imagery. One implementation involves a method of detecting a digital watermark. The method includes: receiving a host signal carrying a digital watermark; computing attributes of the host signal; using the attributes of the host signal to compute a key; and using the key to detect the digital watermark in a transform domain dependent on the key. Other methods, systems and apparatus are provided as well.

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