基于HSB颜色空间的南红玛瑙颜色特征及定量分级研究  

Study on Colour Characteristics and Quantitative Classification of Nanhong Agate Based on HSB Colour Space

作　　者：王浩天 黄慧敏 杨凌岳 杨明星[1,2] 洪汉烈 王朝文[1,2] WANG Haotian;HUANG Huimin;YANG Lingyue;YANG Mingxing;HONG Hanlie;WANG Chaowen(Gemmological Institute,China University of Geosciences,Wuhan 430074,China;Hubei Gems and Jewelry Engineering Technology Research Center,Wuhan 430074,China;School of Earth Sciences,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]中国地质大学(武汉)珠宝学院,湖北武汉430074 [2]湖北省珠宝工程技术研究中心,湖北武汉430074 [3]中国地质大学(武汉)地球科学学院,湖北武汉430074

出　　处：《宝石和宝石学杂志（中英文）》2023年第1期1-13,共13页Journal of Gems & Gemmology

基　　金：国家自然科学基金项目(42072056);中国地质大学(武汉)珠宝学院科研基金项目(CIGTXM-04-S202126)。

摘　　要：近些年,南红玛瑙在珠宝市场上,价格不断上升。颜色作为影响南红玛瑙质量评价的最主要因素,南红玛瑙市场价格的高低与其密切相关,但目前国家尚未出台南红玛瑙相关的分级标准。为了使南红玛瑙颜色的评定过程更加客观、科学和规范,开展了南红玛瑙颜色分级的相关研究。利用灯箱和相机获取样品颜色图片,基于HSB颜色空间,对采集到的南红玛瑙颜色图片进行颜色量化。利用Origin和SPSS软件,对所得颜色量化数据的色调、饱和度和明度(HSB)参数进行统计分析。结果表明,在95%置信区间内红色系南红玛瑙的色调(H)主要分布于[3.20°,17.52°]区间内;饱和度(S)主要分布在[63.82%,92.69%]区间内;明度(B)主要分布在[42.97%,75.37%]区间内,统计结果与南红玛瑙颜色的肉眼观察特征一致。结合肉眼观察特征,借助二阶聚类分析,对红色系南红玛瑙的颜色分级进行了尝试:将色调分为红(R)、橙红(oR)、红橙(rO)3个类别;将饱和度分为浓(S1)、中(S2)、浅(S3)3级;将明度分为亮(B1)、中(B2)、暗(B3)3个级别。对于不同颜色品种,在饱和度方面,柿子红、水红、锦红大于其他品种,冰红和玫瑰红为中等,冰粉的为最低;在明度方面,冰橘和水红最高,柿子红、冰红和冰粉中等,锦红和玫瑰红最低。以上述数据分布特征为基础,结合颜色分级结果,对市场中出现的南红玛瑙的不同颜色名称进行科学的区分并给出推荐的HSB数值参考范围。In recent years, the price of the Nanhong agate has been rising in jewelry market. As one of the most important factors affecting the quality evaluation of the Nanhong agate, its colour is closely related to the market price. However, the national grading standard of the Nanhong agate has not yet introduced. In order to make the evaluation process of the Nanhong agate colour more objective, scientific and standardized, this paper focuses on the colour characteristics and quantitative classification of the Nanhong agate. The colour images of the samples were obtained by light boxes and cameras. Based on HSB colour space, the colour of the Nanhong agate were standardized and quantified. Origin and SPSS softwares were used to statistically analyze the hue, saturation and brightness(HSB) parameters of the obtained colour data. The results showed that at the 95 % confidence level, the hue(H) of the red Nanhong agate was mainly distributed in a range between[3.20°, 17.52°]. The saturation(S) and brightness(B) were mainly within [63.82%, 92.69%] and [42.97%, 75.37%], respectively. The statistical results were consistent with the visual observed colour characteristics of the Nanhong agate. Combined the characteristics of visual observed colour with the TwoStep cluster analysis, this paper recommends to classify the colour of the red Nanhong agate as follow. The H is divided into three categories, including red(R), orange red(oR), red orange(rO). The S is divided into three levels: S1, S2and S3. The B is also divided into three levels: B1, B2, and B3. For the saturation(S) in different colour varieties, the “Shizihong”“Shuihong” and “Jinhong”(different kinds of red) have greater S than other varieties;the “Binghong” and “Meiguihong” are medium, and the “Bingfen” is the lowest. For brighthess(B), the values of “Bingju” and “Shuihong” are the brightest;the “Shizihong” “Binghong” and “Bingfen” are medium, and the “Jinhong” and “Meiguihong” are the lowest. The colour names

关 键 词：南红玛瑙 色调 饱和度 明度 颜色量化 统计分析 保山 凉山 

分 类 号：TS93[轻工技术与工程]