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Radiometric Calibration Method with Compensation of Nonlinearity of Detector for Hyper-Spectral Camera

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2017, 22(10), pp.27-34
  • DOI : 10.9708/jksci.2017.22.10.027
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : August 28, 2017
  • Accepted : September 22, 2017
  • Published : October 31, 2017

Ji-Hyeon Yang 1 Byung-In Choi 1 Hee Duk Park 1 sohyun Kim 2 Yong Chan Park 2

1한화시스템
2국방과학연구소

Accredited

ABSTRACT

In this paper, we propose a novel radiometric calibration method which can effectively compensate the nonlinearity of the detector for hyper-spectral camera. In general, the detector of hyper-spectral camera can produce nonlinear output depending on radiance and integral time. The conventional radiometric calibration methods extract the imprecise radiance profile from the spectral profile of the target due to this nonlinearity. In our proposed method, we use a quadratic equation instead of a linear equation to describe the relation between output of detector and radiance. Then, we use a fractional function to compensate variation of integration time. Thus, our proposed method can extract more precise spectral profile of radiance than conventional radiometric calibration method.

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