Logvinenko Alexander D, Beer Anja
Glasgow Caledonian University, UK.
J Vis. 2012 Apr 30;12(4):17. doi: 10.1167/12.4.17.
Each hue is believed to be made up of the four component hues (yellow, blue, red, and green). A hue consisting of just one component hue is called unitary (or unique). A new technique--partial hue-matching--has been used to reveal the component and unitary hues for a sample of 32 Munsell papers, which were illuminated by neutral, yellow, blue, green, and red lights and assessed by four normal trichromatic observers. The same set of four component hues has been found under both the neutral and the chromatic illuminations for all of the observers. On average, more than 87% of the papers containing a particular component hue under the neutral illumination also have this component hue when lit by the chromatic lights. However, only a quarter of the papers perceived as unitary under the neutral illumination continues being perceived as unitary under all of the chromatic illuminations. In other words, most unitary colors shift along the hue circle due to change in an illuminant's chromaticity. Still, this shift of unitary colors is relatively small: On average, it does not exceed one Munsell hue step.
每种色调被认为由四种组成色调（黄色、蓝色、红色和绿色）构成。仅由一种组成色调构成的色调被称为单一（或独特）色调。一种新技术——部分色调匹配——已被用于揭示32张孟塞尔色纸样本的组成色调和单一色调，这些色纸由中性光、黄光、蓝光、绿光和红光照明，并由四名正常的三色视者进行评估。在所有观察者的中性照明和彩色照明下都发现了相同的四种组成色调。平均而言，在中性照明下包含特定组成色调的色纸中，超过87%在彩色光照明时也具有该组成色调。然而，在中性照明下被视为单一色调的色纸中，只有四分之一在所有彩色照明下仍被视为单一色调。换句话说，由于光源色度的变化，大多数单一颜色会沿着色调环移动。不过，单一颜色的这种移动相对较小：平均而言，不超过一个孟塞尔色调步长。
