Abstract
The multi-colored technique for quantitative temperature measurement is proposed by combining several kinds of infrared filters. The respective filters concerned have selective wavelength band several ,u m in width in the range of 2-13 L m. The applicability is confirmed using numerical simulation to allow a parametric study of how the result varies for different values of emissivity corresponding to the individual infrared filters. An experimental investigation is also performed to evaluate the measurement error and the adaptability of the technique. This method has a feature which allows quantitative temperature measurement for target surfaces at each picture element without presuming any emissivity, reflectively and ambient conditions, so that it may be useful across various medical or engineering disciplines.
