Abstract
Temperature–Emissivity Separation (TES) in the Thermal InfraRed (TIR) domain is an illposed problem, in which the number of measurements (the measured spectral radiances) is less than the number of the parameters to be determined (the values of emissivity in each channel plus the temperature). In this paper we present a new method for deriving these parameters from TIR radiance spectra. The presented procedure determines both the spectral emissivity and the temperature by looking for their maximum entropy probability density function, and computes the target temperature and emissivity as the related expectations.
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