Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of the Optical Society of Korea
  • Vol. 17,
  • Issue 3,
  • pp. 255-261
  • (2013)

Scene-based Nonuniformity Correction Algorithm Based on Temporal Median Filter

Open Access Open Access

Abstract

Scene-based nonuniformity correction techniques for infrared focal-plane arrays have been widely considered as a key technology, and various algorithms have been proposed to compensate for fixed-pattern noise. However, the existed algorithms' capability is always restricted by the problems of convergence speed and ghosting artifacts. In this paper, an effective scene-based nonuniformity correction method is proposed to solve these problems. The algorithm is an improvement over the constant statistics method and a temporal median is utilized with the Gaussian kernel to estimate the nonuniformity parameters. Also theoretical analysis is conducted to demonstrate that effective ghosting artifacts elimination and superior convergence speed can be obtained with the proposed method. Finally, the performance of the proposed technique is tested with infrared image sequences with simulated nonuniformity and with infrared imagery with real nonuniformity. The results show the proposed method is able to estimate each detector's gain and to offset reliably and that it performs better in increasing convergence speed and reducing ghosting artifacts compared with the conventional techniques.

© 2013 Optical Society of Korea

PDF Article
More Like This
Scene-based nonuniformity correction algorithm based on interframe registration

Chao Zuo, Qian Chen, Guohua Gu, and Xiubao Sui
J. Opt. Soc. Am. A 28(6) 1164-1176 (2011)

Scene-Based Nonuniformity Correction with Reduced Ghosting Using a Gated LMS Algorithm

Russell C. Hardie, Frank Baxley, Brandon Brys, and Patrick Hytla
Opt. Express 17(17) 14918-14933 (2009)

Adaptive convergence nonuniformity correction algorithm

Weixian Qian, Qian Chen, Junqi Bai, and Guohua Gu
Appl. Opt. 50(1) 1-10 (2011)

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.


Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved