Abstract
The aim of this study was to investigate the characteristics of luminance distribution calling forth conspicuity in the human mind. The study also established a system that transforms luminance distribution into an image of human-perceptual simulation called a 'Conspicuousness image'.
A subjective assessment was performed. The experimental variables were target size and luminance ratio (target luminance/background luminance). The subjects simply observed the targets (round shapes of various sizes and with varied luminance), and ranked the conspicuousness of each target. The result is well explained by Nakamura's analysis approach, which is called the contrast profiling method.
