Evaluation of apparent colors using color-matching method - In dense fog

Our visual characteristics are affected by our visual environment. In this experiment, we examined how object colors are perceived in dense fog. Seven male subjects with normal color vision were asked to evaluate their perception of object colors in dense fog. The subjects' task was to match the apparent color of ten standard-color cards in dense fog to the Munsell color. In fog, the subjects' ability to determine colors decreased dramatically both in the chroma and value. That is, their color perception shifted from the perception of chromatic colors to that of achromatic colors. Our results can contribute to research of color perception in visual environments that include fog.