Patents Assigned to BAE Systems Information and Electronic Systems Integration, Inc., Reconnaissance and Surveillance Systems
  • Optimum non-uniformity correction for imaging sensors
    Patent number: 7230741
    Abstract: The present invention relates to a method of generating intensity measurement correction coefficients for a pixel in a focal plane array of an optical sensor, wherein the correction coefficients are used to correct an intensity measurement generated by the pixel responsive to illumination. The method includes the steps of accessing past values of the correction coefficients, receiving a pixel intensity measurement indicative of illumination characterized by a reference energy density function, generating a modeled noise signal, and generating present values of the correction coefficients. The present values of the correction coefficients are generated based on the past values of the correction coefficients, the pixel intensity measurement, the modeled noise signal, and the reference energy density function.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: June 12, 2007
    Assignee: BAE Systems Information and Electronic Systems Integration, Inc., Reconnaissance and Surveillance Systems
    Inventors: Kenneth J Ernandes, Robert J Kleehammer