[1] It was an important breakthrough in evaluating the performance of visual devices and guided the development of future systems.
Night vision systems enabled the measurement of visual thresholds following World War II.
The 1950s also marked a time of notable development in the performance modeling of night vision imaging systems.
From 1957 to 1958, Johnson, a United States Army Night Vision & Electronic Sensors Directorate (NVESD)[2] scientist, was working to develop methods of predicting target detection, orientation, recognition, and identification.
His experiments produced the first empirical data on perceptual thresholds that was expressed in terms of line pairs.