Optical Factors Contributing Hue and Luminance Dependency of Color Assimilation

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  • TSUJI Natsumi
    Department of Computer Science and Engineering, Toyohashi University of Technology
  • KANEMATSU Tama
    Faculty of Design, Kyushu University
  • KOIDA Kowa
    Department of Computer Science and Engineering, Toyohashi University of Technology Institute for Research on Next-generation Semiconductor and Sensing Science, Toyohashi University of Technology

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Other Title
  • 色同化の色相依存性と輝度依存性をもたらす眼光学的要因
  • イロ ドウカ ノ シキソウ イソンセイ ト キド イソンセイ オ モタラス ガンコウガクテキ ヨウイン

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Abstract

<p>Color assimilation is an optical illusion causing the color appearance of a center region biases toward the color of its surroundings. The extent of contribution of optical and neural factors to this illusion is unclear. This study investigated the frequency of color assimilation with various surrounding hues and its relation to luminance contrast. We carried out optical simulations to understand the eye-related factors like light scattering and chromatic aberration, then compared these with the observed illusory effect. It was found that color assimilation was more likely to occur with blue and yellow surroundings than with red. Additionally, we noticed a preference for a brighter central region when the surrounding was red, and darker when it was blue. These findings align with our simulations, suggesting that optical factors largely influence the hue dependencies of color assimilation.</p>

Journal

  • VISION

    VISION 36 (2), 61-71, 2024-04-20

    The Vision Society of Japan

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