Digital watermark systems and methods

Details Digital watermark systems and methods Digital watermark systems and methods

2007-04-02

2011-10-11

Moazzami, Nasser (Department: 2436)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C726S026000, C380S059000, C399S366000

Reexamination Certificate

active

08037311

ABSTRACT:
A digital watermark is added to audio or visual content. An illustrative embodiment segments the content, permutes the segments, and transforms such data into another domain. The transformed data is altered slightly to encode a watermark. The altered data can then be inverse-transformed, and inverse-permuted, to return same to substantially its original form. Related watermark decoding methods are also detailed, as are ancillary features and techniques.

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