可见光与热像融合的三维温度模型重建

doi:10.3969/j.issn.1000-1158.2022.02.19

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Abstract Thermal cameras, which can detect thermal emissions and produce images of radiation, are widely used in various industrial applications in recent years. However, without intuitive geometric information, it is difficult to identify objects on thermal images when adjacent sampling areas have the same temperature. To solve the above problem, a method to reconstruct a 3D thermal model by fusing visual geometry and temperature information is proposed. Firstly, a calibration board is used to calibrate the visible camera and thermal imager. Then, based on camera poses acquired by structure from motion, semi-global matching is used to obtain a coarse estimate of depth maps which are optimized by a refinement method combining geometry and shading term. Finally, with the help of camera parameters and calibration information, mutual information is used to achieve the registration between the visible and the thermal image, and the 3D temperature model is reconstructed through the depth maps.

Key words： metrology temperature model thermal images visual geometry 3D reconstruction mutual information

Received: 25 August 2021 Published: 23 February 2022

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	Articles by authors
	ZHANG Yuan-hui
	XU Bai-rui
	ZHU Jun-jiang
	SUN Jian

Cite this article:

ZHANG Yuan-hui,XU Bai-rui,ZHU Jun-jiang, et al. 3D Temperature Model Reconstruction Based on Fusion of Visible and Thermal Images[J]. Acta Metrologica Sinica, 2022, 43(2): 256-263.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.02.19 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I2/256

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