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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 12 — Apr. 20, 2009
  • pp: 2364–2372

Scene-based nonuniformity correction technique for infrared focal-plane arrays

Yong-Jin Liu, Hong Zhu, and Yi-Gong Zhao  »View Author Affiliations


Applied Optics, Vol. 48, Issue 12, pp. 2364-2372 (2009)
http://dx.doi.org/10.1364/AO.48.002364


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Abstract

A scene-based nonuniformity correction algorithm is presented to compensate for the gain and bias nonuniformity in infrared focal-plane array sensors, which can be separated into three parts. First, an interframe-prediction method is used to estimate the true scene, since nonuniformity correction is a typical blind-estimation problem and both scene values and detector parameters are unavailable. Second, the estimated scene, along with its corresponding observed data obtained by detectors, is employed to update the gain and the bias by means of a line-fitting technique. Finally, with these nonuniformity parameters, the compensated output of each detector is obtained by computing a very simple formula. The advantages of the proposed algorithm lie in its low computational complexity and storage requirements and ability to capture temporal drifts in the nonuniformity parameters. The performance of every module is demonstrated with simulated and real infrared image sequences. Experimental results indicate that the proposed algorithm exhibits a superior correction effect.

© 2009 Optical Society of America

OCIS Codes
(040.1240) Detectors : Arrays
(100.2000) Image processing : Digital image processing
(100.2550) Image processing : Focal-plane-array image processors
(100.3020) Image processing : Image reconstruction-restoration
(110.3080) Imaging systems : Infrared imaging

ToC Category:
Image Processing

History
Original Manuscript: November 17, 2008
Revised Manuscript: March 21, 2009
Manuscript Accepted: March 23, 2009
Published: April 15, 2009

Citation
Yong-Jin Liu, Hong Zhu, and Yi-Gong Zhao, "Scene-based nonuniformity correction technique for infrared focal-plane arrays," Appl. Opt. 48, 2364-2372 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-12-2364


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