Digital fingerprinting using synchronization marks and...

Details Digital fingerprinting using synchronization marks and... Digital fingerprinting using synchronization marks and...

2005-11-30

2009-08-18

Kim, Charles (Department: 2624)

Image analysis

Applications

C713S176000, C358S003280

Reexamination Certificate

active

07577272

ABSTRACT:
Digital fingerprinting using synchronization marks and watermarks. At a watermark embedder, an input host signal is divided into regions, and a subset of the regions is selected to receive synchronization marks. Respective synchronization marks are then embedded into the selected regions. At a receiver, an input signal is divided into regions, and a subset of the regions is synchronized with additional regions, which were defined by the embedder when producing the signal that is input to the receiver. Also, the receiver can model any geometric distortion undergone by the input signal between the embedder and the receiver.

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