Thermal imaging device based on IR-to-visible convertion using temperature sensitive phosphor

2016 ◽  
Vol 2016 (0) ◽  
pp. F042006
Author(s):  
Takashiro Tsukamoto ◽  
Min Wang ◽  
Shuji Tanaka
Keyword(s):  
Thermal Imaging ◽  
Temperature Sensitive ◽  
Imaging Device

scholarly journals Automated processing of thermal imaging to detect COVID-19

2020 ◽  
Author(s):  
Rafael Y. Brzezinski ◽  
Neta Rabin ◽  
Nir Lewis ◽  
Racheli Peled ◽  
Ariel Kerpel ◽  
...  
Keyword(s):  
Image Processing ◽  
Low Income ◽  
Thermal Imaging ◽  
Point Of Care ◽  
Area Under The Curve ◽  
Screening Tools ◽  
Imaging Device ◽  
Thermal Images ◽  
Image Processing Algorithms ◽  
Processing Algorithms

ABSTRACTRapid and sensitive screening tools for SARS-CoV-2 infection are essential to limit the spread of COVID-19 and to properly allocate national resources. Here, we developed a new point-of-care, non-contact thermal imaging tool to detect COVID-19, based on image-processing algorithms and machine learning analysis. We captured thermal images of the back of individuals with and without COVID-19 using a portable thermal camera that connects directly to smartphones. Our novel image processing algorithms automatically extracted multiple texture and shape features of the thermal images and achieved an area under the curve (AUC) of 0.85 in detecting COVID-19 with up to 92% sensitivity. Thermal imaging scores were inversely correlated with clinical variables associated with COVID-19 disease progression. We show, for the first time, that a hand-held thermal imaging device can be used to detect COVID-19. Non-invasive thermal imaging could be used to screen for COVID-19 in out-of-hospital settings, especially in low-income regions with limited imaging resources.

Emissivity Calibration and Research of Infrared Image Processing in the Cutting Temperature Test

2007 ◽  
Vol 10-12 ◽  
pp. 928-933
Author(s):  
Yi Wen Wang ◽  
Huan Rui Hao ◽  
Xian Li Liu ◽  
Cai Xu Yue
Keyword(s):  
Thermal Imaging ◽  
Imaging System ◽  
Cutting Temperature ◽  
Infrared Image ◽  
Edge Extraction ◽  
Imaging Device ◽  
Infrared Image Processing ◽  
System Temperature ◽  
Thermal Imaging System ◽  
Temperature Test

It is by the emissivity of the goal objects and the noise problem of the high temperature images that people are puzzled during the course of the cutting temperature tested by the application of thermal imaging device. By using thermocouples, and getting the comparison of thermocouples and the thermal imaging system temperature, we calibrate object emissivity, handle the image noise by improved median method, carry on the edge extraction of image, obtain the temperature of measured objects, and finally confirm the accuracy of the data got by the thermal imaging device with contact measurement.

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