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Watermark embedding and retrieval

  • US 20050177738A1
  • Filed: 04/15/2003
  • Published: 08/11/2005
  • Est. Priority Date: 05/10/2002
  • Status: Abandoned Application
First Claim
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1. A method of embedding a watermark in a host signal, comprising the steps of:

  • extracting from the host signal an original fingerprint representing a perceptual feature of the host signal, storing the original fingerprint of the host signal in a database along with original fingerprints of further host signals, and modifying the host signal, such that the fingerprint is modified in accordance with the watermark to be embedded.

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