Deep learning-assisted common temperature measurement based on visible light imaging

doi:10.1088/1674-1056/ad4cd9

中国物理B ›› 2024, Vol. 33 ›› Issue (8): 80701-080701.doi: 10.1088/1674-1056/ad4cd9

Deep learning-assisted common temperature measurement based on visible light imaging

Jia-Yi Zhu(朱佳仪)¹, Zhi-Min He(何志民)¹, Cheng Huang(黄成)¹, Jun Zeng(曾峻)¹, Hui-Chuan Lin(林惠川)^1,†, Fu-Chang Chen(陈福昌)¹, Chao-Qun Yu(余超群)¹, Yan Li(李燕)¹, Yong-Tao Zhang(张永涛)¹, Huan-Ting Chen(陈焕庭)¹, and Ji-Xiong Pu(蒲继雄)^1,2

1 College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China;
2 Fujian Provincial Key Laboratory of Light Propagation and Transformation, College of Information Science & Engineering, Huaqiao University, Xiamen 361021, China

收稿日期:2024-04-02 修回日期:2024-04-26 出版日期:2024-08-15 发布日期:2024-07-23
通讯作者: Hui-Chuan Lin E-mail:lhc1810@mnnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61975072 and 12174173) and the Natural Science Foundation of Fujian Province, China (Grant Nos. 2022H0023, 2022J02047, ZZ2023J20, and 2022G02006).

Deep learning-assisted common temperature measurement based on visible light imaging

1 College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China;
2 Fujian Provincial Key Laboratory of Light Propagation and Transformation, College of Information Science & Engineering, Huaqiao University, Xiamen 361021, China

Received:2024-04-02 Revised:2024-04-26 Online:2024-08-15 Published:2024-07-23
Contact: Hui-Chuan Lin E-mail:lhc1810@mnnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61975072 and 12174173) and the Natural Science Foundation of Fujian Province, China (Grant Nos. 2022H0023, 2022J02047, ZZ2023J20, and 2022G02006).

摘要/Abstract

摘要： Real-time, contact-free temperature monitoring of low to medium range (30 $^\circ$C-150 $^\circ$C) has been extensively used in industry and agriculture, which is usually realized by costly infrared temperature detection methods. This paper proposes an alternative approach of extracting temperature information in real time from the visible light images of the monitoring target using a convolutional neural network (CNN). A mean-square error of $<1.119 ^\circ$C was reached in the temperature measurements of low to medium range using the CNN and the visible light images. Imaging angle and imaging distance do not affect the temperature detection using visible optical images by the CNN. Moreover, the CNN has a certain illuminance generalization ability capable of detection temperature information from the images which were collected under different illuminance and were not used for training. Compared to the conventional machine learning algorithms mentioned in the recent literatures, this real-time, contact-free temperature measurement approach that does not require any further image processing operations facilitates temperature monitoring applications in the industrial and civil fields.

关键词: convolutional neural network, visible light image, temperature measurement, low-to-medium-range temperatures

Abstract: Real-time, contact-free temperature monitoring of low to medium range (30 $^\circ$C-150 $^\circ$C) has been extensively used in industry and agriculture, which is usually realized by costly infrared temperature detection methods. This paper proposes an alternative approach of extracting temperature information in real time from the visible light images of the monitoring target using a convolutional neural network (CNN). A mean-square error of $<1.119 ^\circ$C was reached in the temperature measurements of low to medium range using the CNN and the visible light images. Imaging angle and imaging distance do not affect the temperature detection using visible optical images by the CNN. Moreover, the CNN has a certain illuminance generalization ability capable of detection temperature information from the images which were collected under different illuminance and were not used for training. Compared to the conventional machine learning algorithms mentioned in the recent literatures, this real-time, contact-free temperature measurement approach that does not require any further image processing operations facilitates temperature monitoring applications in the industrial and civil fields.

Key words: convolutional neural network, visible light image, temperature measurement, low-to-medium-range temperatures

中图分类号: (Neural networks, fuzzy logic, artificial intelligence)

07.05.Mh

07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))

Jia-Yi Zhu(朱佳仪), Zhi-Min He(何志民), Cheng Huang(黄成), Jun Zeng(曾峻), Hui-Chuan Lin(林惠川), Fu-Chang Chen(陈福昌), Chao-Qun Yu(余超群), Yan Li(李燕), Yong-Tao Zhang(张永涛), Huan-Ting Chen(陈焕庭), and Ji-Xiong Pu(蒲继雄). Deep learning-assisted common temperature measurement based on visible light imaging[J]. 中国物理B, 2024, 33(8): 80701-080701.

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Deep learning-assisted common temperature measurement based on visible light imaging

Deep learning-assisted common temperature measurement based on visible light imaging

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