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Image data correcting device for correcting image data to remove back projection without eliminating halftone image

  • US 20020027670A1
  • Filed: 08/28/2001
  • Published: 03/07/2002
  • Est. Priority Date: 09/04/2000
  • Status: Active Grant
First Claim
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1. An image data correcting device comprising:

  • detecting means for detecting an intensity difference between first image data corresponding to a part of a predetermined small area and second image data corresponding to the remaining parts of the predetermined small area;

    determining means for determining whether the first image data corresponds to a halftone image; and

    intensity changing means for changing an intensity of the first image data to a predetermined low intensity, when the intensity difference is equal to or smaller than a first predetermined value and the first image data does not correspond to the halftone image and the intensity of the first image data is equal to or smaller than a second predetermined value.

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