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Method for calculating gain correction factors in a digital imaging system

  • US 6,350,985 B1
  • Filed: 04/26/1999
  • Issued: 02/26/2002
  • Est. Priority Date: 04/26/1999
  • Status: Expired due to Fees
First Claim
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1. A method for developing a set of corrected digital gain correction coefficients for use in correcting digital values representing an image captured by a detector comprising a plurality of individual sensors, each sensor representing a pixel, the method comprising:

  • A) exposing the detector to radiation having a substantially uniform intensity distribution over all sensors to obtain an initial set of pixel values;

    B) developing a first set of gain correction coefficients; and

    C) applying a smoothing filter to all coefficients in said first set of gain correction coefficients to obtain a-set of corrected gain correction coefficients.

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