Dichoptic Fusion of Thermal and Intensified Imagery

Abstract

Subjects used the dichoptic combination of a monocular image intensifier (NVG) and a monocular uncooled microbolometer (LWIR) to detect and localize both visual targets and camouflaged thermal targets while moving through a dimly lit complex environment. The NVG imagery enabled the subjects to move freely through the environment with high accuracy, but did not mediate the detection of camouflaged thermal targets. The LWIR mode mediated the detection of camouflaged thermal targets but did not allow the detection of visual targets, and provided insufficient detail to allow accurate movement through the environment Subjects were quite capable to dichoptically fuse the individual LWIR and NVG images, enabling them to detect all (visual and thermal) targets while moving accurately through the environment We conclude that dichoptic fusion of NVG and LWIR imagery is quite feasible and is a simple way to provide observers with enhanced situational awareness in nighttime operations