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Yoko Mizokami, Wataru Nozaki, Hirohisa Yaguchi; Influence of the diffuseness of illumination on color appearance. Journal of Vision 2018;18(10):217. doi: https://doi.org/10.1167/18.10.217.
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© ARVO (1962-2015); The Authors (2016-present)
The appearance of object surface could be largely influenced by lighting conditions and object materials. Our previous study showed that the diffuseness of lighting influenced the appearance of the glossiness and the roughness of an object in particular (VSS 2017, ICVS 2017). Here, we investigated the influence of the diffuseness on color appearance. We examined how the color appearance of object surface was influenced by the diffuseness of lighting in miniature rooms. We used two miniature rooms illuminated by a diffused light and a direct light, respectively and placed a test sample at the center of each room. Test samples were square-shape patches with wavy striped surface. Both glossy and matte surface materials with five colors were prepared for the samples. We tested white and reddish illumination conditions. In addition, a viewing condition which limited the field of view to a test patch so that no surrounding information was available was tested. An observer judged the color appearance of a color sample under each lighting condition by selecting a corresponding color from a Munsell color chart placed in a separate viewing box illuminated uniformly by the same color as the test room. The results of corresponding color for test samples were similar in both diffused and direct lighting conditions even if the luminance distribution of the surface was largely changed depending on the diffuseness of lighting and the surface glossiness. This indicates that the color appearance of samples that we tested was quite stable. There was little difference in color appearance of samples in the limited viewing condition. These results suggest that we are able to compensate the change in surface appearance and recognize a surface color.
Meeting abstract presented at VSS 2018
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