An Investigation of Stereopsis with AN/AVS-6 Night Vision Goggles at Varying Levels of Illuminance and Contrast
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
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The increased reliance on night operations by the military over the last few decades has led to the development of various night imaging devices. Night vision goggles NVGs are one device which have gained widespread use in nighttime helicopter operations. However, rotorcraft accident data have indicated an increased occurrence of pilot error type accidents when NVGs are in use. NVG related accidents often can be linked to extremely poor ambient lighting and contrast conditions during nighttime operations as well as the imaging limitations of the NvGs. Research has shown that NVGs reduce visual acuity and depth perception when compared to unaided daylight viewing conditions. In this study the effects of illumination and contrast on stereoscopic vision with and without ANAVS-6 goggles were investigated. Stereoacuity was measured using a modified Howard-Dolman apparatus with four levels of illumination and three levels of contrast.
- Military Aircraft Operations
- Optical Detection and Detectors