Methods employing multiple watermarks

Details Methods employing multiple watermarks Methods employing multiple watermarks

2005-02-01

2005-02-01

Couso, Yon J. (Department: 2623)

Image analysis

Applications

C358S003280

Reexamination Certificate

active

06850626

ABSTRACT:
Image, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the frail watermark unreadable), permitting an original object to be distinguished from a processed object. Appropriate action can then taken in response thereto.

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