13 August 1993 Thermal contrast definition for infrared imaging sensors
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Abstract
Given the dependence of infrared imaging system performance on target thermal contrast, the accuracy in defining target (Delta) Ts is of critical importance. The current definition of (Delta) T neglects temperature variance across the target, and its inadequacy in characterizing infrared signatures is becoming increasingly apparent. With the advent of more sophisticated sensors and signal processors, with increased capabilities to extract more detailed thermal features, a new method of defining (Delta) T which includes temperature variance is required. This paper presents a new definition of thermal contrast, validates its improved capability to predict thermal imaging sensor performance with the available data, and addresses related issues including the effects of range and sensor resolution on the apparent temperature variance and the contribution of background clutter to the overall scene variance.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael R. Whalen, Eric J. Borg, "Thermal contrast definition for infrared imaging sensors", Proc. SPIE 1967, Characterization, Propagation, and Simulation of Sources and Backgrounds III, (13 August 1993); doi: 10.1117/12.151043; https://doi.org/10.1117/12.151043
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