General performance evaluation on thermal imaging systems with the square integral method based on MRTD channel width
2007
The Square Integral (SQI) Method based on MRTD (Minimum Resolvable Temperature Difference) is introduced for the
design and evaluation of thermal imaging systems. It is well known that there exists an optimal angle magnification which
can make optoelectronic imaging systems and human eye matching optimally, and make optoelectronic imaging systems
attaining the optimal performance. Based on MRTD and channel width, a new way called SQI method is presented for
evaluating the universal performance on thermal imaging systems, and attaining the optimal angle magnification or optimal
viewing distance. The method can give a rational description for the matching between thermal imaging systems and human
eye. Results calculated with this method are in agreement with experiment measurements quite perfectly. From the
coherence between measurement data and theoretical predictions with variable detector size, optics focus, luminance and
human vision, it appears that the SQI method is an excellent synthesized measure for the optimal angle magnification
and the performance of thermal imaging systems.
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