Image Processing Software For Real Time Quantitative Infrared Thermography

Paul Hughett; Elizabeth A. Fuchs

doi:10.1117/12.940512

11 May 1987 Image Processing Software For Real Time Quantitative Infrared Thermography

Paul Hughett, Elizabeth A. Fuchs

Proceedings Volume 0780, Thermosense IX: Thermal Infrared Sensing for Diagnostics and Control; (1987) https://doi.org/10.1117/12.940512
Event: 1987 Technical Symposium Southeast on Optics, Electro-Optics, and Sensors, 1987, Orlando, FL, United States

Abstract

True temperature can be determined from infrared thermography provided the material emissivity and ambient irradiance are known. The measurement equations found in the literature are valid only if the scanner response is linear in radiance. Other complications arise if the emissivity depends on temperature. Spectral (or band) rather than total emissivity values should be used but are less often found in the literature. A new method, specimen calibration, avoids these problems by determining a calibration curve specific to the specimen and experimental arrangement. The computer program VDAS (Video Data Analysis System) automates the collection of calibration data, reduction to a calibration curve, and temperature measurement using the curve. The new method was tested on nylon 6/6 between 20 and 160° C and on 304L stainless steel between 30 and 500° C and was found to be significantly more accurate.

Citation Download Citation

Paul Hughett and Elizabeth A. Fuchs "Image Processing Software For Real Time Quantitative Infrared Thermography", Proc. SPIE 0780, Thermosense IX: Thermal Infrared Sensing for Diagnostics and Control, (11 May 1987); https://doi.org/10.1117/12.940512

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