ABSTRACT The restoration of the Roman building of the third-fourth century CE called Minerva Medica, in Rome, highlighted a problem concerning the choice of the color of the bricks for integration. Current conservation practice in Italy favours a restoration that as much as possible is consistent with the original but leaves some visible differences to a careful observer. Color measurement is usually performed using portable spectrocolorimeters that provide the reflectance spectrum and also colorimetric parameters such as L* a* b*, h* L* C*, RGB, etc. In other sectors, such as for olive oils, for wines, and also for the colors of commercial products, sensory panels are used to provide results of difference/similarity and are known to be similar to observations made by consumers. In this study, data from a top quality spectrocolorimeter and from a sensory panel are compared. Twenty non-professional people were involved in the comparison between seven restoration bricks and three ancient Roman bricks from the studied site. Observations took place in a room with controlled lighting, and each observer filled out a sensory card using about 2000 known comparison colors. Comparison of the results was carried out with graphic methods and by means of cluster analysis. The results show that the sensory panel could be a useful alternative to colorimetry, while cluster analysis allowed a significant response to questions posed by conservation professionals, and was confirmed by other graphic-statistical methods.

中文翻译：

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多变量数据处理辅助的比色法和感官小组在研究罗马砖和集成砖之间的相似性中的比较

摘要 在罗马修复了公元三世纪四世纪的罗马建筑密涅瓦梅卡，突出了一个关于集成砖颜色选择的问题。意大利目前的保护实践倾向于尽可能地与原作保持一致的修复，但给细心的观察者留下一些明显的差异。颜色测量通常使用便携式分光色度计进行，这些分光色度计提供反射光谱以及色度参数，例如 L* a* b*、h* L* C*、RGB 等。在其他领域，例如橄榄油、葡萄酒、并且对于商业产品的颜色，感官面板用于提供差异/相似性的结果，并且已知与消费者的观察相似。在这项研究中，比较来自顶级分光色度计和感官小组的数据。20 名非专业人士参与了对来自研究地点的 7 块修复砖和 3 块古罗马砖的比较。观察是在一个灯光可控的房间里进行的，每个观察者使用大约 2000 种已知的比较颜色填写一张感官卡。结果的比较是通过图形方法和聚类分析进行的。结果表明，感官小组可能是比色法的有用替代品，而聚类分析允许对保护专业人员提出的问题做出重要回应，并得到其他图形统计方法的证实。20 名非专业人士参与了对来自研究地点的 7 块修复砖和 3 块古罗马砖的比较。观察是在一个灯光可控的房间里进行的，每个观察者使用大约 2000 种已知的比较颜色填写一张感官卡。结果的比较是通过图形方法和聚类分析进行的。结果表明，感官小组可能是比色法的有用替代品，而聚类分析可以对保护专业人员提出的问题做出重要回应，并得到其他图形统计方法的证实。20 名非专业人士参与了对来自研究地点的七块修复砖和三块古罗马砖的比较。观察是在一个灯光可控的房间里进行的，每个观察者使用大约 2000 种已知的比较颜色填写一张感官卡。结果的比较是通过图形方法和聚类分析进行的。结果表明，感官小组可能是比色法的有用替代品，而聚类分析允许对保护专业人员提出的问题做出重要回应，并得到其他图形统计方法的证实。结果的比较是通过图形方法和聚类分析进行的。结果表明，感官小组可能是比色法的有用替代品，而聚类分析允许对保护专业人员提出的问题做出重要回应，并得到其他图形统计方法的证实。结果的比较是通过图形方法和聚类分析进行的。结果表明，感官小组可能是比色法的有用替代品，而聚类分析允许对保护专业人员提出的问题做出重要回应，并得到其他图形统计方法的证实。