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Digital watermarking and data hiding with narrow-band absorption materials

  • US 10,304,151 B2
  • Filed: 08/04/2017
  • Issued: 05/28/2019
  • Est. Priority Date: 03/20/2015
  • Status: Active Grant
First Claim
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1. A method comprising:

  • scanning a printed object with a red illumination scanner, the red illumination scanner having a wavelength at or around 660 nm, said scanning a printed object yielding scan data,wherein the printed object includes a process color printed thereon through an offset or flexo printing press, the process color including a narrow-band absorption material that has a peak absorbance at or around 660 nm, the process color printed in a manner to convey redundant instances of an encoded plural-bit message, the encoded plural-bit message corresponding to a GTIN number;

    analyzing the scan data with one or more programmed processors to decode the encoded plural-bit message, said analyzing yielding the GTIN number; and

    providing the GTIN number as an output.

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