1
Philip R Patterson, Neil E Lofgren, John Stach, Geoffrey B Rhoads: Hiding geo-location data through arrangement of objects. Digimarc Corporation, Digimarc Corporation, January 31, 2006: US06993152 (75 worldwide citation)

The present invention provides steganographic-embedding techniques. In one implementation a digital watermark signal is mapped to a set of spatial positions. Physical message objects are positioned according to the set of spatial positions. The signal is provided on a physical structure such as a bu ...


2
Philip R Patterson, Neil E Lofgren, John Stach, Geoffrey B Rhoads: Hiding geo-location data through arrangement of objects. Digimarc Corporation, March 20, 2003: US20030053654-A1

The present invention provides steganographic-embedding techniques. In one implementation a digital watermark signal is mapped to a set of spatial positions. Physical message objects are positioned according to the set of spatial positions. The signal is provided on a physical structure such as a bu ...



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