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Abstract：
There is great practical and scholarly interest in the identification of pigments in works of art. This paper compares the effectiveness of the widely used Raman Spectroscopy (RS), with hyperspectral imaging (HSI), a reflectance imaging technique, to evaluate the reliability of HSI for the identification of pigments in historic works of art and to ascertain if there are any benefits from using HSI or a combination of both. We undertook a case study based on six Armenian illuminated manuscripts (eleventh-eighteenth centuries CE) in the Bodleian Library, University of Oxford. RS, and HSI (380-1000 nm) were both used to analyse the same 10 folios, with the data then used to test the accuracy and efficiency of HSI against the known results from RS using reflectance spectra reference databases compiled by us for the project. HSI over the wavelength range 380-1000 nm agreed with RS at best 93% of the time, and performance was enhanced using the SFF algorithm and by using a database with many similarities to the articles under analysis. HSI is significantly quicker at scanning large areas, and can be used alongside RS to identify and map large areas of pigment more efficiently than RS alone. HSI therefore has potential for improving the speed of pigment identification across manuscript folios and artwork but must be used in conjunction with a technique such as RS.
摘要：
对艺术品中的颜料的识别具有极大的实践和学术兴趣。本文比较了广泛使用的拉曼光谱（RS）的有效性，高光谱成像（HSI），反射成像技术，评估HSI用于识别历史艺术品中颜料的可靠性，并确定使用HSI或两者的组合是否有任何好处。我们根据Bodleian图书馆的六个亚美尼亚照明手稿（公元11至18世纪）进行了案例研究，牛津大学。RS,和恒生指数(380-1000纳米)都用于分析相同的10个作品集，然后使用我们为项目编制的反射光谱参考数据库，将数据用于测试HSI与RS的已知结果的准确性和效率。HSI在380-1000nm波长范围内与RS最多93％的时间一致，并且使用SFF算法并使用与所分析的文章有许多相似之处的数据库来增强性能。恒生指数在扫描大面积时明显更快，并且可以与RS一起使用，比单独使用RS更有效地识别和绘制大面积的色素。因此，HSI有可能提高手稿作品集和艺术品的色素识别速度，但必须与RS等技术结合使用。
