VISIBILITY OF SELECTED SAMPLES AT LOW LUMINANCE
The visibility at low luminance levels is a very discussed topic which is solved across the whole industry. The warning elements that increase the visibility of people or things are very necessary and desirable at low luminance levels caused by an unexpected situation (for example accidents, power failure, natural disaster). Contrary to these experimental works that are focused on adaptive luminance of color lights, the proposed work is focused on the perception of the color surface contrast on the mesopic and photopic of luminance level, where differences from Purkinje shift and the pseudotritanopic defect have occurred. Selected steel plates were measured with a spectrophotometer to determine their color coordinates in the CIELAB color space. Various luminescence plates were included in the visual assessments. A suitable combination of colors with the high color purity, the black and white contrast strip and the phosphorescent pigments appear as the potentially beneficial solution that will increase visibility.
colorimetry, mesopic luminance level, visibility, warning elements, gloss, luminescence