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Watermarking systems and methods

  • US 20040250080A1
  • Filed: 02/05/2004
  • Published: 12/09/2004
  • Est. Priority Date: 02/05/2003
  • Status: Active Grant
First Claim
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1. In a method that includes encoding one or more content objects with a steganographic digital watermark, the encoding including embedding a collection of features that can be used to facilitate computation of geometrical distortion of the object after encoding, an improvement including step for making the collection of geometrical features resistant to attack.

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