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Sensors 2018, 18(12), 4299; https://doi.org/10.3390/s18124299

Single Infrared Image-Based Stripe Nonuniformity Correction via a Two-Stage Filtering Method

School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China
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Received: 20 October 2018 / Revised: 3 December 2018 / Accepted: 4 December 2018 / Published: 6 December 2018
(This article belongs to the Special Issue Infrared Sensors and Technologies)
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Abstract

The presence of stripe nonuniformity severely degrades the image quality and affects the performance in many infrared (IR) sensing applications. Prior works correct the nonuniformity by using similar spatial representations, which inevitably damage some detailed structures of the image. In this paper, we instead take advantage of spectral prior of stripe noise to solve its correction problem in single IR image. We first analyse the significant spectral difference between stripes and image structures and utilize this knowledge to characterize stripe nonuniformity. Then a two-stage filtering strategy is adopted combining spectral and spatial filtering. The proposed method enables stripe nonuniformity to be eliminated from coarse to fine, thus preserving image details well. Extensive experiments on simulated images and raw IR images demonstrate that the proposed method achieves superior correction performance over the recent state-of-the-art methods. View Full-Text
Keywords: infrared imaging; stripe nonuniformity; spectral analysis; filtering infrared imaging; stripe nonuniformity; spectral analysis; filtering
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Zeng, Q.; Qin, H.; Yan, X.; Yang, S.; Yang, T. Single Infrared Image-Based Stripe Nonuniformity Correction via a Two-Stage Filtering Method. Sensors 2018, 18, 4299.

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