基于色差原理对石质文物表面污染物清洗效果的评价研究  

Evaluation studies of cleaning effect of contaminants on stone relics' surface based on principle of color difference

作　　者：叶良 杨平 YE Liang;YANG Ping(School of Civil Engineering and Architecture,Zhejiang University of Science and Technology,Hangzhou 310023,Zhejiang,China;Zhejiang-Singapore Joint Laboratory for Urban Renewal and Future City,Hangzhou 310023,Zhejiang,China)

机构地区：[1]浙江科技大学土木与建筑工程学院,杭州310023 [2]浙江新加坡城市更新与未来城市联合实验室,杭州310023

出　　处：《浙江科技学院学报》2024年第1期87-96,共10页Journal of Zhejiang University of Science and Technology

基　　金：杭州西湖风景名胜区管委会科技发展计划项目(223-008)。

摘　　要：【目的】针对石质文物表面污染物在清洗前后颜色相关性的问题,提出了以色度参数为指标的石质文物表面污染物清洗效果评价方法。【方法】首先,通过色度仪对现场清洗试验结果进行检测;然后,将检测数据导入SPSS分析软件,采用主成分分析法(principal component analysis, PCA)、线性回归法和皮尔逊相关系数对颜色与清洗效果的相关性进行分析;再用色差公式将计算结果进行等级划分并评价整体清洗效果;最后,通过正态检验和偏最小二乘法分析颜色参数以验证计算结果的可靠性。【结果】明亮度与清洗效果呈正相关,影响权重为39.061%;红绿度和黄蓝度大小与污染物残留量呈负相关,与清洗效果呈正相关;彩度差和色相差与清洗效果呈负相关,色度差值越小说明文物原有样貌越完好。清洗效果评价结果为石门区域清洗效果良好,石殿和石亭区域清洗效果一般。【结论】通过分析污染物清洗效果与颜色的相关性,以及采用色差公式对石质文物清洗效果进行评价的方法,可为后续石质文物清洗效果评价研究提供新的思路和方法。[Objective]In response to the color correlation of contaminants on stone relics' surface before and after cleaning,a method was proposed to evaluate the cleaning effect of contaminants on stone relics' surface by using the color parameter as an indicator.[Method]First,the results of the on-site cleaning test were recorded by the colorimeter;second,the recorded data were imported into the SPSS analysis software and the correlation between color and cleaning effect was analyzed by resorting to the principal component analysis(PCA),the linear regression and the Pearson's correlation coefficient;then,the calculation results were graded by virtue of the color difference formula to evaluate the overall cleaning effect;finally,the color parameters were analyzed by conducting the normality test and partial least squares method to validate the reliability of the calculation results.[Result]Brightness is positively correlated with cleaning effect,with the impact of weight 39.061%;the red-green and yellow-blue degree size is negatively correlated with the amount of contaminant residue while positively correlated with cleaning effect;chromaticity difference and color difference arenegatively correlated with cleaning effect,and the smaller the difference in chromaticity,the more intact the original appearance of the cultural relics.The cleaning effect evaluation results show that the stone gate is rated good,and the stone temple and the stone pavilion are rated general.[Conclusion]By analyzing the correlation between cleaning effect and color of contaminants,and employing the method of evaluating the cleaning effect of stone relics by means of the color difference formula,new ideas and methods can be provided for further research on evaluating the cleaning effect of stone relics.

关 键 词：石质文物 清洗效果 颜色相关性 色差公式 效果评价 

分 类 号：G264.3[历史地理—考古学及博物馆学]