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Image correction method and apparatus with partial detector array sampling

  • US 4,806,780 A
  • Filed: 06/09/1987
  • Issued: 02/21/1989
  • Est. Priority Date: 06/11/1986
  • Status: Expired due to Fees
First Claim
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1. An image correction method which comprises the steps of:

  • reading at least one reference mark plate so as to obtain at least one reference signal;

    sampling n picture elements out of every p picture elements (p>

    n) in the reference signal;

    calculating a correction signal by adding cumulatively the sampled n picture elements of the reference signal a plurality of times for every equal picture element; and

    correcting an image signal in accordance with the calculated correction signal.

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