Reconstructing temperature field images by MWIR and LWIR based on uncooled IRFPA

Jiahong Li; Zhihao Liu; Mozhou Sha; Weiqi Jin; Hong Guo; Li Li; Qin Guo

doi:10.1117/12.2602361

24 June 2021 Reconstructing temperature field images by MWIR and LWIR based on uncooled IRFPA

Jiahong Li, Zhihao Liu, Mozhou Sha, Weiqi Jin, Hong Guo, Li Li, Qin Guo

Proceedings Volume 11885, International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021); 118850U (2021) https://doi.org/10.1117/12.2602361
Event: 2021 International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021), 2021, Xi'an, China

Abstract

With the development of high-performance IRFPA, temperature field image measurement has been applied to the fields of industry and agriculture, national defence, health and epidemic prevention. In order to obtain a clearer and more accurate image of temperature field, we developed a coaxial beam splitting medium wave/long wave dual-band infrared temperature field image reconstruction experimental system using uncooled wide-band IRFPA. Then, a low frequency noise correction method in gradient domain is used to reduce the temperature measurement error caused by the non-uniformity of detectors. The temperature measurement error of central field of view is less than 3.5% and that of quadrangular field of view is less than 4.5% in the temperature range of 20~80°C by calibrating the temperature of the system using blackbody. Experimental results show that the method is effective. Finally, the equivalent temperature field image to the typical outfield image is given.

Citation Download Citation

Jiahong Li, Zhihao Liu, Mozhou Sha, Weiqi Jin, Hong Guo, Li Li, and Qin Guo "Reconstructing temperature field images by MWIR and LWIR based on uncooled IRFPA", Proc. SPIE 11885, International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2021), 118850U (24 June 2021); https://doi.org/10.1117/12.2602361

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