Response to ‘Night-vision tests for evaluating visual performance’

Performance Tests of True-Color Night Vision Cameras

This paper presents performance test results of true-color night vision cameras. Such cameras are sensitive to the visible to near-infrared (VNIR) portion of the spectrum allowing for the “true-color” of scenes and objects to be displayed and recorded under low-light-level conditions. True-color refers to an approximate reproduction of the subjective colors that would be seen by the human eye i...

Mild hypoxia and visual performance with night vision goggles.

Military night vision goggles (NVGs) are image intensifiers normally used when the human operator's visual capabilities are unimpaired by oxygen deprivation. However, mountain search team members and aviators sometimes operate with NVG augmentation at altitudes where hypoxic visual decrement is documented. The objective of this research was to investigate the effects of mild hypoxia on monocula...

Display Considerations for Improved Night Vision Performance

Most displays viewed in dark environments can easily cause dazzling glare and affect a viewer’s dark adaptation state (night vision). In previous work we showed that legibility could be improved and dark adaptation preserved in low-light environments by using a display design with a specially selected spectral light emission. We used long-wavelength light (red) that is easily visible to dayligh...

Visual Evoked Potential Through Night Vision

Night Vision Thermal Imaging Systems Performance Model

Scope NVTherm (Night Vision Thermal Imaging System Performance Model) is a PC based computer program which models parallel scan, serial scan, and staring thermal imagers that operate in the mid and far infrared spectral bands (3 to 12 micrometers wavelength). The model can only be used for thermal imagers which sense emitted, infrared light. NVTherm predicts the Minimum Resolvable Temperature D...