Method for Reducing Show-Through in a Scanned Duplexed Document
AssigneeLexmark International, Inc.
InventorsScott Heydinger, William Gardner, Khageshwar Thakur
Life of this patent
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Abstract
A method for processing a duplexed document having a first side with a first image and a second side with a second image includes scanning only the first side of the duplexed document under a first imaging condition to retrieve first information relating to each of the first image and show-through contribution of the second image; scanning only the first side of the duplexed document under a second imaging condition to retrieve second information relating to each of the first image and show-through contribution of the second image; and comparing the first information and the second information to reduce an amount of the show-through contribution.
Claims20
A method for processing a duplexed document having a first side with a first image and a second side with a second image, comprising:
- scanning only said first side of said duplexed document under a first imaging condition to retrieve first information relating to each of said first image and show-through contribution of said second image;
- scanning only said first side of said duplexed document under a second imaging condition to retrieve second information relating to each of said first image and show-through contribution of said second image;
- and
- comparing said first information and said second information to reduce an amount of said show-through contribution of said second image.
A method for calibrating a scanner for processing a duplexed user document having a front side with a front-side image and a back side with a back-side image, comprising:
- providing a duplexed calibration document having a first side with a first calibration image and a second side, opposite to said first side, with a second calibration image;
- scanning only said first side of said duplexed calibration document under a first imaging condition to retrieve first information relating to each of said first calibration image and said second calibration image;
- scanning only said first side of said duplexed calibration document under a second imaging condition to retrieve second information relating to each of said first calibration image and said second calibration image;
- and
- generating a transformation function from said first information and said second information for reducing back-side image show-through in a scanned front-side image.
Dependencies are inferred from the claim text.