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Proceedings Paper

A noninvasive human temperature screening system with multiple detection points
Author(s): Sarun Sumriddetchkajorn; Kosom Chaitavon
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Paper Abstract

This paper introduces a non-invasive human temperature screening system for use in a large public area. Our key idea is to combine an image filtering process, an image morphology algorithm, and a particle analysis process in such a way that an individual's face in live thermal image can be located so that the skin temperature can be monitored and displayed. From our experiment, we find that the temperature measurement depends on each individual's response to the ambient temperature and on the contrast of the thermal image against the black body radiation source. This indicates that using the blackbody radiation source as our temperature reference does not totally compensate the fluctuation in human skin temperature. Our field test study at the triage section of Rajavithi Hospital, Thailand, shows that the maximum skin temperatures from people's faces can be simultaneously monitored and displayed in real time. In addition, the temperature value obtained from the thermal imaging camera has less fluctuation with respect to the true core body temperature once the disturbance from the surrounding environment is compensated. Hyperthermic patients can be identified with 100% sensitivity when the temperature threshold level and the offset temperature value are appropriately chosen.

Paper Details

Date Published: 28 April 2008
PDF: 10 pages
Proc. SPIE 7003, Optical Sensors 2008, 70031L (28 April 2008); doi: 10.1117/12.779147
Show Author Affiliations
Sarun Sumriddetchkajorn, National Electronics and Computer Technology Ctr. (Thailand)
Kosom Chaitavon, National Electronics and Computer Technology Ctr. (Thailand)


Published in SPIE Proceedings Vol. 7003:
Optical Sensors 2008
Francis Berghmans; Anna Grazia Mignani; Antonello Cutolo; Patrick P. Meyrueis; Thomas P. Pearsall, Editor(s)

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