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18 December 2019 Design of imaging evaluation system for infrared thermal imager
Zhi-qiang Zhang, Ping Wang, Xu-dong Yu, Yu-mei Zhou, Ting Li
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Proceedings Volume 11338, AOPC 2019: Optical Sensing and Imaging Technology; 113382P (2019) https://doi.org/10.1117/12.2547758
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China
Abstract
Infrared thermal imager has developed rapidly in the field of military and civilian applications. How to objectively evaluate the imaging effect of the infrared thermal imager has become a problem that must be solved. Which not only provides quantitative mathematical description for the imaging performance of the infrared thermal imager, but also provides the supporting basis for the study of the image sharpness, target detection distance and target tracking performance of the infrared imaging system. The imaging evaluation system of thermal infrared imager proposed in this paper has the functions of infrared image data acquisition and processing. It is used to test and evaluate infrared image data in coordination with the target system of infrared imaging evaluation (composed of blackbody, radiation target console, collimating optical system and digital display precision turntable). The system has designed the main performance indexes, mathematical model and steps of image evaluation, including image non-uniformity, Signal Transfer Function (SiTF), Noise Equivalent Temperature Difference (NETD) three indicators to evaluate the noise and response characteristics of infrared thermal imager, and Angular Linearity, Target Imaging Positioning Angle Error two indicators to evaluate the image resolution characteristics of infrared thermal imager. After system testing, the performance is very superior and it becomes the necessary debugging and testing equipment in the development of infrared thermal imager.
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Zhi-qiang Zhang, Ping Wang, Xu-dong Yu, Yu-mei Zhou, and Ting Li "Design of imaging evaluation system for infrared thermal imager", Proc. SPIE 11338, AOPC 2019: Optical Sensing and Imaging Technology, 113382P (18 December 2019); https://doi.org/10.1117/12.2547758
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KEYWORDS
Thermography
Imaging systems
Infrared imaging
Infrared radiation
Image processing
Signal processing
Image analysis
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