Ad hoc radiometric calibration of a thermal-infrared camera

Vidas, Stephen & Moghadam, Peyman (2013) Ad hoc radiometric calibration of a thermal-infrared camera. In International Conference on Digital Image Computing: Techniques and Applications (DICTA 2013), IEEE, Wrest Point, Hobart, TAS.

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Abstract

Many applications can benefit from the accurate surface temperature estimates that can be made using a passive thermal-infrared camera. However, the process of radiometric calibration which enables this can be both expensive and time consuming. An ad hoc approach for performing radiometric calibration is proposed which does not require specialized equipment and can be completed in a fraction of the time of the conventional method. The proposed approach utilizes the mechanical properties of the camera to estimate scene temperatures automatically, and uses these target temperatures to model the effect of sensor temperature on the digital output. A comparison with a conventional approach using a blackbody radiation source shows that the accuracy of the method is sufficient for many tasks requiring temperature estimation. Furthermore, a novel visualization method is proposed for displaying the radiometrically calibrated images to human operators. The representation employs an intuitive coloring scheme and allows the viewer to perceive a large variety of temperatures accurately.

Impact and interest:

1 citations in Scopus
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ID Code: 67673
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: radiometry, thermal-infrared, radiometric calibration, visualization, thermal camera
DOI: 10.1109/DICTA.2013.6691478
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > ARTIFICIAL INTELLIGENCE AND IMAGE PROCESSING (080100) > Image Processing (080106)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > OTHER TECHNOLOGY (109900) > Technology not elsewhere classified (109999)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 IEEE
Deposited On: 23 Feb 2014 23:36
Last Modified: 26 Feb 2014 22:33

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