Image analysis – Applications
Reexamination Certificate
2006-02-21
2008-09-09
Johns, Andrew W (Department: 2624)
Image analysis
Applications
C348S461000
Reexamination Certificate
active
07424132
ABSTRACT:
Methods for embedding and reading identification codes from media signals use embedded code signals modulated with the auxiliary message. These embedded code signals convey hidden tracking codes in images, video, music and printed objects. The embedded code signals are embedded by varying characteristics of the signal. The identification code varies for different copies of a media signal and indexes distribution information such as point of sale information and ownership information.
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Digimarc Corporation
Johns Andrew W
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