基于色度测量的乾隆色谱色彩特征研究  

Color characteristics of Qianlong palette based on chromaticity measurement

作　　者：苏淼[1,2] 周凯丽 段怡婷 鲁佳亮[1,2] 杨丽梅 SU Miao;ZHOU Kaili;DUAN Yiting;LU Jialiang;YANG Limei(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;International Center for Silk and Silk Road Studies,Hangzhou,Zhejiang 310018,China;School of Design,University of Leeds,Leeds LS29JT,UK)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),浙江杭州310018 [2]浙江理工大学、国际丝绸与丝绸之路研究中心,浙江杭州310018 [3]利兹大学设计学院,英国利兹LS29JT

出　　处：《纺织学报》2023年第3期132-138,共7页Journal of Textile Research

基　　金：国家重点研发计划项目(2019YFC1521301);浙江省文物保护专项项目(2021016);浙江理工大学科研启动基金项目(20202214-Y)。

摘　　要：为了对清代丝绸文物的色彩有更加精确且科学的认知,通过CM700D测色计测量了乾隆色谱的色度参数,讨论了乾隆色谱受染料浓度影响而造成的色彩偏差情况以及乾隆色谱的稳定性,并在L^(*)a^(*)b^(*)空间分析其色度参数的分布规律。通过比较乾隆色谱与sRGB、Adobe RGB、CMYK的色域大小,分析了清代丝绸文物数字化时色彩还原的可能性。结果表明:染料浓度增加会使明度值下降,而彩度变化没有规律,不同色系的彩度受染料浓度影响不同;在本文研究的自然条件下,半年内乾隆色谱较为稳定;乾隆色谱中黄红色系颜色数量较多,a^(*)、b^(*)参数存在一个大致的范围,超出这个范围的颜色是清代染色技术难以达到的;乾隆色谱中部分高明度与高彩度的黄色超出sRGB、Adobe RGB、CMYK的色域,对于以这部分黄色为底色的清代丝绸文物建议以实物展出为主。Objective In order to gain more accurate and scientific understanding of the color of Qing dynasty silk cultural relics,this research attempts to analyze the color data of Qianlong palette from the perspective of chromaticity,and to provide a reference for the exhibition and digitalization of Qing dynasty silk cultural relics.Method The Qianlong palette were measured with spectrophotometer CM700D,and then the color difference caused by the change of dye concentration and the stability of Qianlong palette were discussed.The colors of Qianlong palette were analyzed in L^(*)a^(*)b^(*)color space.By comparing the color gamut of Qianlong palette with that of sRGB,Adobe RGB and CMYK,the possibility of color restoration in the digitalization of silk relics in the Qing dynasty was analyzed.Results It is found that when dye concentration increased,the lightness of all Qianlong palette colors decreased,but the change of chroma was inconsistent,where the chroma of green and purple decreased and the chroma of red increased(Tab.2).In addition,when the dye concentration is increased uniformly,the color difference does not change uniformly.When the dye concentration changes,the green system of the Qianlong palette is greatly affected by the dye concentration,while the yellow system is less affected by the dye concentration.The average color difference between yellows dyed with different dye concentrations is less than 3(Fig.2).Three repeated measurements of Qianlong palette within five months showed that Qianlong palette was stable within half a year under the natural conditions used for this study.In 42 colors Qianlong palette,the range of a^(*)is from-18 to 47,and the range of b^(*)is from-22 to 74,while in the extended 210 colors Qianlong palette,the range of a^(*)is from-18 to 47,and the range of b^(*)is from-23 to 78(Fig.3).Comparing 42 colors Qianlong palette with 210 colors Qianlong palette,it was found that for the same dyeing process,changing only the dye concentration cannot broaden the maximum parameter range of a^(*

关 键 词：丝绸文物 乾隆色谱 传统染色 纺织品色彩 色彩管理 

分 类 号：TS141[轻工技术与工程—纺织材料与纺织品设计]