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Adaptive prediction filtering for digital watermarking

  • US 7,688,996 B2
  • Filed: 06/12/2007
  • Issued: 03/30/2010
  • Est. Priority Date: 01/22/2002
  • Status: Active Grant
First Claim
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1. A method of digital watermark detection comprising:

  • using a computer programmed as a digital watermark detector to perform the acts of;

    computing signal characteristics of a host digitally watermarked signal;

    analyzing the characteristics to determine an extent to which the signal characteristics correspond to characteristics of a digital watermark; and

    adapting parameters of digital watermark prediction applied to the watermarked signal based on the extent to which the signal characteristics correspond to the characteristics of the digital watermark;

    wherein the parameters correspond to a type of prediction filter that is selected based on the signal characteristics.

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