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Protecting images with image markings

  • US 7,068,811 B2
  • Filed: 03/27/2002
  • Issued: 06/27/2006
  • Est. Priority Date: 07/31/1992
  • Status: Expired due to Fees
First Claim
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1. A method for imparting a watermark pattern onto a digitized image comprising the steps of:

  • providing said digitized image comprised of a plurality of pixels, wherein each of said pixels includes brightness data that represents a brightness of at least one color; and

    adjusting said brightness data associated with at least one of said pixels by a predetermined adjustment factor, said adjustment factor adjusting said brightness data by no more than +/−

    10%;

    wherein the watermark pattern has a relationship with a random number.

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