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Systems and methods for estimating an image marking process using scanned image attributes

  • US 7,453,604 B2
  • Filed: 06/30/2003
  • Issued: 11/18/2008
  • Est. Priority Date: 06/30/2003
  • Status: Expired due to Fees
First Claim
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1. A method of analyzing a printed image, comprising:

  • scanning the printed image;

    determining spatial characteristics of the printed image;

    analyzing the spatial characteristics of the printed image;

    determining spatial variations in the printed image based on the analyzed spatial characteristics; and

    determining an analog tone or binary image marking process used to create the printed image based on the determined spatial variations in the printed image;

    wherein determining spatial variations of the printed image includes determining local variations in input data, determining half tone dot periodicity, and determining frequency or noise characteristics; and

    wherein determining the image marking process does not require obtaining additional spectral information obtained through additional spectral channels, and does not require a power spectrum of the image data.

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