摘要
通过翡翠绿色明度与彩度、明度与色差等关系的研究,确定明度对颜色质量评价的作用。三维均匀色空CIE1976L*a*b*中,当翡翠绿色的明度较低即L*<19.52时,明度与彩度呈正相关;当19.52<L*<60时,明度与彩度虽无一一对应关系,却在L*=37.63时,形成最高彩度77.64;当L*>60时,明度则与彩度呈负相关。通过CIEDELAB、DECMC、CIE DE2000三个色差公式的计算,证明DL*是决定DE的直接因素,DC*次之,而DH*对色差几乎无贡献。得出结论,翡翠绿色的质量评价应以明度为首要因素,这是最直观且最符合色知觉效果的,而后依次为彩度与色调角两个标准。
To evaluate the effect of lightness on color, the correlation of lightness and chroma, lightness and color difference was studied. In the three-dimensional uniform color space CIE 1976 L＊ a＊ b＊, jadeite jade＇s chroma is positively correlated with lightness when the lightness of green is relatively low of L＊〈19.52; and there＇s no one-to-one correlation between lightness and chroma when 19.52〈L＊〈60, but while L＊=37.63 the highest chroma 77.64 is reached; when lightness higher than 60, lightness and chroma are negatively correlated. After the calculation of three color-difference formulae CIE DELAB, DECMC, CIE DE2000, it is proven that DL＊ is the key factor to DE, followed by DC＊, while DH＊ has nearly no contribution to color difference. It is concluded that emerald green quality evaluation of jadeite jade should be primarily based on lightness which is the most intuitive and consistent with the effect of color perception, and then followed by chroma and hue-angle.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2010年第3期560-566,共7页
Bulletin of the Chinese Ceramic Society
基金
国家岩石矿物材料实验中心项目支持(No.519002310062)
关键词
翡翠
明度
色差
质量评价
jadeite jade
lightness
color difference
quality evaluation
