Categorical color constancy under RGB-LED light sources
Categorical color constancy under RGB-LED light sources
复制标题
RGB-LED 光源下的分类颜色恒定性
DOI：
10.1002/col.22241
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发表时间：
2018-07
影响因子：
1.4
通讯作者：
Shinomori Keizo
中科院分区：
文献类型：
--
作者：
Ma Ruiqing;Liao Ningfang;Yan Pengfei;Shinomori Keizo
基于发光二极管（LED）的光源已广泛应用于众多行业和日常实际应用中。近年来，由红、绿、蓝三种窄波段发光二极管（RGB - LED）组成的基于LED的光源已成为比普通白光荧光粉LED和其他传统宽带光源更受欢迎的照明光源，因为RGB - LED可以产生多种类型的照明颜色。然而，与传统的宽带光源和多波段LED光源（MB - LED）相比，RGB - LED的显色指数要低得多，而MB - LED是由几个LED组成的，可以准确地模拟日光光源。考虑到RGB‐LED光源的3个相对较窄的光谱带，在RGB‐LED光源下，颜色常数（指人类视觉系统衰减照明颜色变化影响并保持表面颜色恒定的能力）可能比传统宽带光源或MB‐LED光源更差。在本研究中，我们使用蒙塞尔彩色芯片，用一种颜色命名方法研究了从中性到红、绿、蓝、黄四种照明变化下的分类颜色恒定性。RGB‐LED光源产生中性光源和四色光源。引入了一种改进的颜色恒定指数，它描述了每个颜色类别的质心位移，以评估颜色恒定性能。结果表明，除了蓝色照明下的红色、棕色、橙色和黄色类别和黄色照明下的橙色类别外，4种颜色照明下的类别颜色恒常性相对较好。此外，红色和绿色照明下的范畴色彩恒常性优于蓝色和黄色照明下的范畴色彩恒常性。结果表明，当光源发出的光谱不足以准确呈现反射表面的颜色时，视觉系统中的颜色恒常性机制在颜色分类中起作用。然而，不建议使用RGB‐LED光源产生蓝色和黄色照明，因为颜色稳定性差。
The light‐emitting diode (LED)‐based light sources have been widely applied across numerous industries and in everyday practical uses. Recently, the LED‐based light source consisting of red, green and blue LEDs with narrow spectral bands (RGB‐LED) has been a more preferred illumination source than the common white phosphor LED and other traditional broadband light sources because the RGB‐LED can create many types of illumination color. The color rendering index of the RGB‐LED, however, is considerably lower compared to the traditional broadband light sources and the multi‐band LED light source (MB‐LED), which is composed of several LEDs and can accurately simulate daylight illuminants. Considering 3 relatively narrow spectral bands of the RGB‐LED light source, the color constancy, which is referred to as the ability of the human visual system to attenuate influences of illumination color change and hold the perception of a surface color constant, may be worse under the RGB‐LED light source than under the traditional broadband light sources or under the MB‐LED. In this study, we investigated categorical color constancy using a color naming method with real Munsell color chips under illumination changes from neutral to red, green, blue, and yellow illuminations. The neutral and 4 chromatic illuminants were produced by the RGB‐LED light source. A modified use of the color constancy index, which describes a centroid shift of each color category, was introduced to evaluate the color constancy performance. The results revealed that categorical color constancy under the 4 chromatic illuminants held relatively well, except for the red, brown, orange, and yellow color categories under the blue illumination and the orange color category under the yellow illumination. Furthermore, the categorical color constancy under red and green illuminations was better than the categorical color constancy under blue and yellow illuminations. The results indicate that a color constancy mechanism in the visual system functions in color categories when the illuminant emits an insufficient spectrum to render the colors of reflecting surfaces accurately. However, it is not recommended to use the RGB‐LED light source to produce blue and yellow illuminations because of the poor color constancy.
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影响因子：
1.4
作者：
J. A. Worthey
通讯作者：
J. A. Worthey
DOI：
10.1364/josaa.13.001622
发表时间：
1996-08
期刊：
Journal of the Optical Society of America. A, Optics, image science, and vision
影响因子：
--
作者：
I. Kuriki;K. Uchikawa
通讯作者：
I. Kuriki;K. Uchikawa
影响因子：
1.8
作者：
B채uml, KH
通讯作者：
B채uml, KH
影响因子：
--
作者：
LAND, EH;MCCANN, JJ
通讯作者：
MCCANN, JJ
DOI：
10.1364/josaa.16.001521
发表时间：
1999-07
影响因子：
1.9
作者：
K. Bäuml
通讯作者：
K. Bäuml