How many surfaces can you distinguish by color? Real environmental lighting increases discriminability of surface colors.

IF 3.2 2区 物理与天体物理 Q2 OPTICS
Optics express Pub Date : 2024-09-23 Epub Date: 2024-09-09 DOI:10.1364/OE.531468
Takuma Morimoto, JoãO M M Linhares, Sérgio M C Nascimento, Hannah E Smithson
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引用次数: 0

Abstract

Color supports object identification. However, two objects that differ in color under one light can appear indiscriminable under a second light, a phenomenon known as illuminant metamerism. Past studies evaluated the frequency of illuminant metamerism only under single, uniform illuminants. Here we used computer-graphics techniques to simulate a pair of planar surfaces placed under newly measured hyperspectral illumination maps that quantify the directional variability of real-world lighting environments. We counted the instances of illuminant metamerism that can be solved simply by viewing surfaces tilted to a different direction. Results show that most instances of illuminant metamerism can in theory be resolved for both trichromatic and dichromatic observers, suggesting that the physical directional variability available in natural lighting environments substantially mitigates the biological limitations of trichromacy or dichromacy.

您能通过颜色分辨出多少种表面?真实环境照明可提高表面颜色的辨别能力。
颜色有助于识别物体。然而,在一种光源下颜色不同的两个物体,在第二种光源下可能会出现不同的颜色,这种现象被称为光源同色异谱现象(illuminant metamerism)。以往的研究仅评估了单一、均匀光源下的同色异谱现象。在这里,我们利用计算机图形技术模拟了放置在新测量的高光谱照明图下的一对平面,该照明图量化了真实世界照明环境的方向变化。我们统计了光源同色异谱的情况,这些情况只需将表面倾斜到不同的方向即可解决。结果表明,理论上三基色观察者和二基色观察者都能解决大多数光源同色异谱现象,这表明自然照明环境中的物理方向可变性大大减轻了三基色或二基色的生物局限性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Optics express
Optics express 物理-光学
CiteScore
6.60
自引率
15.80%
发文量
5182
审稿时长
2.1 months
期刊介绍: Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.
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