Three-dimensional temperature field measurement method based on light field colorimetric thermometry

被引:1
作者
Yuan, Ying [1 ]
Cao, Jun [1 ]
Guo, Jinkun [1 ]
Ling, Jinzhong [1 ]
Wang, Xiaorui [1 ]
机构
[1] Xidian Univ, Sch Optoelect Engn, Xian 710071, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Temperature measurement; Optical field imaging; Colorimetric thermometry; 3D reconstruction; Radiometric calibration; RADIATIVE PROPERTIES;
D O I
10.1051/jeos/2023042
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This paper proposes a novel method for three-dimensional (3D) temperature measurement using light field colorimetric thermometry, aiming to overcome the challenges associated with the intricate system structure and the limited availability of 3D information in traditional radiation temperature measurement methods. Firstly, the correlation between corresponding image points and the positions of 3D object in the light field image system is analyzed using the ray tracing method. The 3D position acquisition model and the light field colorimetric thermometry model are established, enabling simultaneous acquisition of the spatial coordinates and radiometric information of the 3D object. Then, the light field camera radiation calibration experiment was conducted, and the 3D temperature field will be obtained by employing colorimetric thermometry for each corresponding image point of the same object point. Finally, the experiment employed a light field camera for temperature measurement and reconstruction of candle flames. The accuracy of the temperature measurement is 3.31%, thus confirming the feasibility and effectiveness of the proposed method.
引用
收藏
页数:10
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