Non-contact measurement of angle of view between the inspected surface and the thermal imager |
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| Affiliation: | 1. Institute for Computer Graphics and Vision, Graz University of Technology, Austria;2. Chair of Mining Engineering and Mineral Economics, Montanuniversität Leoben, Austria;3. Robotics Institute, Carnegie Mellon University, USA;1. Airports of the Future Project, Queensland University of Technology (QUT), GPO Box 2434, 2 George Street, Brisbane, QLD 4001, Australia;2. Image and Video Laboratory, Queensland University of Technology (QUT), GPO Box 2434, 2 George Street, Brisbane, QLD 4001, Australia |
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| Abstract: | The angle of view between inspected object and thermal imager influences the values of temperature measured by infrared thermography. This happens because the emissivity depends on the angle of radiation, and because the apparent temperature measured is influenced by that angle of view combined to thermal imager’s field of view. Therefore, it is necessary to know the angle of view during thermographic inspection, which is generally not feasible due to safety reasons. This paper develops a method of measuring the angle of view with no contact with the inspected object, by employing laser distance meters, commonly available in the market. |
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| Keywords: | Thermography Thermal imager Angle of view Non-contact measurement |
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