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Scene-based Nonuniformity Correction Complemented by Block Reweighting and Global Offset Initialization

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2017, 22(8), pp.15-23
  • DOI : 10.9708/jksci.2017.22.08.015
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : April 13, 2017
  • Accepted : June 18, 2017
  • Published : August 31, 2017

Yonghee Hong 1 Keun-Jae Lee 1 Hong-Rak Kim 1 지호진 1

1LIG넥스원

Accredited

ABSTRACT

In this paper, the block reweighting and global offset initialization methods are proposed to complement the improved IRLMS algorithm which is the effective algorithm in registration based SBNUC algorithm. Proposed block weighting method reweights the error map whose abnormal data are excluded. The global offset initialization method compensates the global nonuniformity initially. The ordinary registration based SBNUC algorithm is hard to compensate global nonuniformity because of low scene motion. We employ the proposed methods to improved IRLMS algorithm, and apply it to real-world infrared raw image stream. The result shows that new implementation provides 3.5~4.0dB higher PSNR and convergence speed 1.5 faster then the improved IRLMS algorithm.

Citation status

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