A new calibration method of camera arrays based on infinite scene registration for long-range infrared detection

Shengjie Liu; Hao Cui; Junwei Li; Shengqian Wang; Kai Wei

doi:10.1117/12.2663041

12 April 2023 A new calibration method of camera arrays based on infinite scene registration for long-range infrared detection

Shengjie Liu, Hao Cui, Junwei Li, Shengqian Wang, Kai Wei

Author Affiliations +

Proceedings Volume 12565, Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022); 1256535 (2023) https://doi.org/10.1117/12.2663041
Event: Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022), 2022, Shanghai, China

Abstract

Infrared camera arrays have previously demonstrated the potential for long-range detection due to their distributed aperture structures, but their performance is affected by the calibration procedure. The widely used calibration method based on image registration estimates the transformation matrix between different cameras by extracting matching features, and its accuracy is limited by low-resolution infrared images. To solve this problem, a new calibration method based on infinite scene registration is developed, which has high registration accuracy and is easy to implement. The results of the laboratory experiment demonstrate that the signal-to-noise ratio of the point target is improved by 1.86 with the proposed method, which proves the effectiveness and competitiveness of the proposed method. Finally, the measured data of long-range aircraft further verifies the feasibility of the proposed method.

Citation Download Citation

Shengjie Liu, Hao Cui, Junwei Li, Shengqian Wang, and Kai Wei "A new calibration method of camera arrays based on infinite scene registration for long-range infrared detection", Proc. SPIE 12565, Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022), 1256535 (12 April 2023); https://doi.org/10.1117/12.2663041

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