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Optical Engineering • Open Access

Regularization approach to scene-based nonuniformity correction
Author(s): Jun-Hyung Kim; Jieun Kim; Sohyun Kim; Joohyoung Lee; Boohwan Lee

Paper Abstract

Various scene-based nonuniformity correction (SBNUC) methods have been proposed to diminish the residual nonuniformity (RNU) of the infrared focal plane array (IRFPA) sensors. Most existing SBNUC techniques require a relatively large number of image frames to reduce the RNU. In some applications, however, there is not enough time for capturing a large number of image frames prior to the camera operation, or only several image frames are available to users. A new scene-based approach that can correct the RNU using only several image frames is proposed. The proposed method formulates the SBNUC process as an energy minimization problem. In the proposed energy function, we introduce regularization terms for the parameter regarding the responsivity of the IRFPA as well as for the true scene irradiance. Correction results are obtained by minimizing the energy function using a numerical technique. Experimental results demonstrate the effectiveness of the proposed method.

Paper Details

Date Published: 7 May 2014
PDF: 7 pages
Opt. Eng. 53(5) 053105 doi: 10.1117/1.OE.53.5.053105
Published in: Optical Engineering Volume 53, Issue 5
Show Author Affiliations
Jun-Hyung Kim, Agency for Defense Development (Korea, Republic of)
Jieun Kim, Agency for Defense Development (Korea, Republic of)
Sohyun Kim, Agency for Defense Development (Korea, Republic of)
Joohyoung Lee, Agency for Defense Development (Korea, Republic of)
Boohwan Lee, Agency for Defense Development (Korea, Republic of)


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