Simultaneous measurement of temperature and emissivity with stereo dual band IR camera configuration

摘要

This work describes a temperature and emissivity measurement methodology that applies the multi-wavelength pyrometry principle to Ir thermography using dual band IR cameras in a stereo arrangement.The four radiation distributions measured by the IR cameras are rebuilt on the surface mesh by means of the pinhole camera model and are usedd to write a system of equations in which emissivities and temperatures are unknown quantities. By solving the system,the temperature and directional emissivity of the material under test can be measured for each wavelength band.Keyworda:IR thermography; emissivity measurements;multi-wavelength pyrometry,IR dual band.