Steganography methods employing embedded calibration data - Patent US5636292(A)
Filed:
May 08, 1995
Published:
Jun 03, 1997
Abstract
An identification code signal is impressed on a carrier to be identified (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned and the carrier thereby identified. The method and apparatus are characterized by robustness despite degradation of the encoded carrier, and by permeation of the identification signal throughout the carrier.Applicants
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DIGIMARC CORP
Inventors
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RHOADS GEOFFREY B
Application Number
436098Priority Claims
US43609895Family Members
US5636292(A) -
Steganography methods employing embedded calibration data
US5636292(C1) -
Steganography methods employing embedded calibration data
