Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Modified Two-Point Correction Method for Wide-Spectrum LWIR Detection System | |
D. Zhang, H. Sun, D. Wang, J. Liu and C. Chen | |
2023 | |
发表期刊 | Sensors
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ISSN | 14248220 |
卷号 | 23期号:4 |
摘要 | Non-uniformity commonly exists in the infrared focal plane, which behaves as the fixed-pattern noise (FPN) and seriously affects the image quality of long-wave infrared (LWIR) detection systems. The two-point correction (TPC) method is commonly used to reduce image FPN in engineering. However, when a wide-spectrum LWIR detection system calibrated with a black body is used to detect weak and small targets in the sky, FPN still appears in the image, affecting its uniformity. The effects of atmospheric transmittance characteristics of long-range paths on the non-uniformity of wide-spectrum long-wave infrared systems have not been studied. This paper proposes a modified TPC model based on spectral subdivision that introduces atmospheric transmittance. Additionally, the effects of atmospheric transmittance characteristics on the long-wave infrared non-uniform correction coefficient are analyzed. The experimental results for a black body scene and sky scene using a weak and small target detection system with a long-wave Sofradir FPA demonstrate that the wide-spectrum LWIR detection system fully considers atmospheric transmittance when performing calibration based on the TPC method, which can reduce the non-uniformity of the image. © 2023 by the authors. |
DOI | 10.3390/s23042054 |
URL | 查看原文 |
收录类别 | sci ; ei |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/68150 |
专题 | 中国科学院长春光学精密机械与物理研究所 |
推荐引用方式 GB/T 7714 | D. Zhang, H. Sun, D. Wang, J. Liu and C. Chen. Modified Two-Point Correction Method for Wide-Spectrum LWIR Detection System[J]. Sensors,2023,23(4). |
APA | D. Zhang, H. Sun, D. Wang, J. Liu and C. Chen.(2023).Modified Two-Point Correction Method for Wide-Spectrum LWIR Detection System.Sensors,23(4). |
MLA | D. Zhang, H. Sun, D. Wang, J. Liu and C. Chen."Modified Two-Point Correction Method for Wide-Spectrum LWIR Detection System".Sensors 23.4(2023). |
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Modified Two-Point C(41067KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
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