List of Abstracts of QIRT 1996 (Stuttgart, Germany) In Situ Calibration for Quantitative Infrared Thermography

This paper presents a method to correct temperatures obtained by infrared thermography using thermocouples as reference temperatures. The raw signal values of the infrared detector are compared to the temperature measured with thermocouples. The relation between raw thermal value and body temperature includes three parameters which allow to determine a best-fit approximation between detector signal and body temperature. The resulting non-linear system of equations is solved numerically using the LevenbergMarquardt procedure. These parameters are then used to calculate the corrected temperatures of the body.