Visible and near infrared hyperspectral imaging have allowed unprecedented analyses of two major works of art of the National Museum of Catalan Art (MNAC), 15th century Gothic altarpieces: (1) Madonna of the ‘Consellers’ (Lluis Dalmau, 1443–1445) [1], an impressive piece of Catalan painting, inspired by J. van Eyck and (2) Princess Eudoxia exorcised in front of St. Stephen's tomb (Vergos Group, 1495–1500) part of the altarpiece of Sant Esteve de Granollers. Visible and near infrared (VNIR) hyperspectral imaging was used to highlight the artist's handling of materials in achieving light and shadow effects in the red draperies. The refinement in the modelling could be observed thanks to the distribution images of the red pigments. Short-wavelength infrared (SWIR) hyperspectral imaging revealed blackened azurite on visually altered areas of the two paintings. It is possible to map the presence of azurite below the altered layer and obtain a better understanding of the earlier appearance of the paintings. It was moreover possible to identify and map the binders used in both works of art: the use of oil in Dalmau's painting, as the earliest Catalan oil painting, is confirmed here whereas in the Vergos's painting both egg and oil may have been used in separate areas.

中文翻译：

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使用可见光和近红外高光谱成像的组合绘制 15 世纪哥特式艺术作品中的颜料和粘合剂

可见光和近红外高光谱成像允许对加泰罗尼亚国家艺术博物馆 (MNAC) 的两件主要艺术作品进行前所未有的分析，15 世纪哥特式祭坛：(1) 'Consellers' 的麦当娜 (Lluis Dalmau, 1443–1445) [ 1]，一幅令人印象深刻的加泰罗尼亚绘画，灵感来自 J. van Eyck 和 (2) Eudoxia 公主在圣埃斯蒂夫·德·格拉诺勒斯 (Sant Esteve de Granollers) 的祭坛画的圣斯蒂芬墓 (Vergos Group，1495-1500) 前驱魔。可见光和近红外 (VNIR) 高光谱成像用于突出艺术家对材料的处理，以在红色窗帘中实现光影效果。由于红色颜料的分布图像，可以观察到建模的改进。短波红外 (SWIR) 高光谱成像在两幅画的视觉变化区域显示出变黑的蓝铜矿。可以在变质层下方绘制蓝铜矿的存在图，并更好地了解绘画的早期外观。此外，还可以识别和绘制两幅艺术作品中使用的粘合剂：在达尔毛的画作中使用油作为加泰罗尼亚最早的油画，在这里得到证实，而在维尔戈斯的画中，鸡蛋和油可能分开使用领域。