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Digital watermarking methods, apparatus and systems

  • US 8,509,474 B1
  • Filed: 12/11/2009
  • Issued: 08/13/2013
  • Est. Priority Date: 12/11/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • obtaining a first color channel and a second color channel, the first color channel and the second color channel are components of a color image signal or color video signal;

    obtaining a digital watermark orientation pattern, the orientation pattern serving to facilitate detection of a watermark message;

    separating the digital watermark orientation pattern into first frequency components and second frequency components;

    utilizing a programmed electronic processor or electronic processing circuitry, transforming the first color channel by steganographically embedding the first frequency components therein; and

    utilizing a programmed electronic processor or electronic processing circuitry, transforming the second color channel by steganographically embedding the second frequency components therein.

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