Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Scene-based nonuniformity correction for airborne point target detection systems | |
Zhou, D. B.; D. J. Wang; L. J. Huo; R. Liu and P. Jia | |
2017 | |
发表期刊 | Optics Express |
卷号 | 25期号:13 |
摘要 | Images acquired by airborne infrared search and track (IRST) systems are often characterized by nonuniform noise. In this paper, a scene-based nonuniformity correction method for infrared focal-plane arrays (FPAs) is proposed based on the constant statistics of the received radiation ratios of adjacent pixels. The gain of each pixel is computed recursively based on the ratios between adjacent pixels, which are estimated through a median operation. Then, an elaborate mathematical model describing the error propagation, derived from random noise and the recursive calculation procedure, is established. The proposed method maintains the characteristics of traditional methods in calibrating the whole electro-optics chain, in compensating for temporal drifts, and in not preserving the radiometric accuracy of the system. Moreover, the proposed method is robust since the frame number is the only variant, and is suitable for real-time applications owing to its low computational complexity and simplicity of implementation. The experimental results, on different scenes from a proof-of-concept point target detection system with a long-wave Sofradir FPA, demonstrate the compelling performance of the proposed method. (C) 2017 Optical Society of America |
收录类别 | sci ; ei |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/59490 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | Zhou, D. B.,D. J. Wang,L. J. Huo,et al. Scene-based nonuniformity correction for airborne point target detection systems[J]. Optics Express,2017,25(13). |
APA | Zhou, D. B.,D. J. Wang,L. J. Huo,&R. Liu and P. Jia.(2017).Scene-based nonuniformity correction for airborne point target detection systems.Optics Express,25(13). |
MLA | Zhou, D. B.,et al."Scene-based nonuniformity correction for airborne point target detection systems".Optics Express 25.13(2017). |
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Scene based nonunifo(4096KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
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