Edge-directed adaptive nonuniformity correction for staring infrared focal plane arrays

Tianxu Zhang; Yan Shi

doi:10.1117/1.2158404

1 January 2006 Edge-directed adaptive nonuniformity correction for staring infrared focal plane arrays

Tianxu Zhang, Yan Shi

Author Affiliations +

Optical Engineering, Vol. 45, Issue 1, 016402 (January 2006). https://doi.org/10.1117/1.2158404

Abstract

An in-depth analysis is made in the case of object degeneration and ghosting artifacts in a neural-network-based nonuniformity correction algorithm (NN-NUC) for infrared focal plane arrays (IRFPAs). It is found that updating the correction coefficients blindly in the NN-NUC scheme without taking the object edge into account is the root of the problem. Based on this conclusion, an edge-directed NN-NUC scheme (ED-NN-NUC) is proposed to eliminate ghosting artifacts and object degeneration. Comparison experiments with simulated data and real IRFPA infrared data show that the root of the problem pointed out is correct and the proposed scheme is rational and effective.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Tianxu Zhang and Yan Shi "Edge-directed adaptive nonuniformity correction for staring infrared focal plane arrays," Optical Engineering 45(1), 016402 (1 January 2006). https://doi.org/10.1117/1.2158404

Published: 1 January 2006

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