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首页> 外文期刊>Leukos >Two Neutral White Illumination Loci Based on Unique White Rating and Degree of Chromatic Adaptation
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Two Neutral White Illumination Loci Based on Unique White Rating and Degree of Chromatic Adaptation

机译：基于唯一白度和色适应度的两个中性白光照明位点

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摘要

In this article, two new neutral loci are presented characterizing the whiteness perception of illumination color of on- and off-Planckian light sources. The two neutral loci are derived based on (1) unique white ratings obtained on a real three-dimensional cube (UW-locus, object mode based) and (2) the degrees of adaptation obtained from a study of chromatic adaptation under neutral and highly colored illuminations (CA-locus, illumination mode based). Equations are presented describing the loci in the CIE u'v' chromaticity diagram and in terms of distance from the Planckian locus (Duv) versus correlated color temperature (CCT) and of "degree of neutrality" versus CCT. Although the two neutral loci are very similar in shape, they are not identical, with the UW-locus being approximately a (blue) shifted version of the CA-locus. The latter was in very good agreement with other illumination based neutral white loci reported in the literature, which all have in common negative Duv for lower CCTs and positive Duv for higher CCTs. Like several other lines of white and achromatic points from literature, the UW-neutral locus was located completely below the Planckian locus. The chromaticity associated with the maximum degree of neutrality was for both loci very close to that of the CIE D65 daylight illuminant, suggestive of earlier reports that vision processes such as color constancy and chromatic adaptation, and hence perceived illumination neutrality, are likely conditioned by natural scene statistics.
机译：在本文中，提出了两个新的中性位点，以表征普朗克光源上和非普朗克光源对照明颜色的白度感知。这两个中性位点是基于（1）在真实三维立方体（基于UW轨迹，基于对象模式）上获得的唯一白色等级和（2）通过研究中性和高度色度适应下的色度获得的适应度得出的彩色照明（CA轨迹，基于照明模式）。提出了方程，描述了CIE u'v'色度图中的位点，以及距普朗克轨迹（Duv）与相关色温（CCT）的距离以及“中性度”与CCT的关系。尽管两个中性位点的形状非常相似，但它们并不相同，UW轨迹是CA轨迹的（蓝色）移位版本。后者与文献中报道的其他基于照明的中性白色基因座非常吻合，对于较低CCT，它们均具有负Duv，对于较高CCT具有正Duv。与文献中的其他几条白色和无彩色点线一样，UW中性位点完全位于普朗克位点之下。对于两个基因座，与最大中性程度相关的色度都非常接近CIE D65日光光源，这提示了较早的报道，视觉过程（例如颜色恒定性和色适应性以及因此感知的照明中性）很可能受自然条件制约。现场统计。

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