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Image defect detection

  • US 10,404,868 B2
  • Filed: 07/15/2015
  • Issued: 09/03/2019
  • Est. Priority Date: 07/15/2015
  • Status: Active Grant
First Claim
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1. An apparatus to detect a defect in a printed image, the apparatus being to:

  • receive, by a processor, first image data representing a printable image;

    receive, by the processor, second image data representing a scanned image of the printable image printed in a printing operation;

    determine, by the processor, a resolution of the scanned image, the resolution of the scanned image being variable based on a characteristic of the printing operation;

    generate, by the processor, a reference image using the first image data, the reference image having a resolution corresponding to the determined resolution of the scanned image; and

    determine, by the processor, whether a defect is present in the image printed in the printing operation based on a comparison of the reference image with the scanned image.

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