When It Is Not Only About Color: The Importance of Hyperspectral Imaging Applied to the Investigation of Paintings
This paper illustrates some of the developments achieved in the field of non-contact analytical tools for two-dimensional polychrome artworks. It reports significant advantages within the application of hyperspectral imaging for high-quality documentation, accurate color reproduction, study of artists’ materials and techniques, and identification of past conservation treatments. In particular, Dürer’s oil painting on panel, Adoration of the Magi (1504), was analyzed with a pushbroom hyperspectral imaging system in the visible-near-infrared range (Vis-NIR, 400–900 nm). The results obtained, including high-resolution color-accurate and false-color images, as well as high-resolution reflectance spectra, are reported and discussed, and the importance of hyperspectral imaging applied to the investigation of paintings is shown.
KeywordsColor-accurate image False-color image Hyperspectral imaging Oil painting Reflectance spectroscopy
The authors would like to thank the Uffizi Gallery for having given permission for the analysis of the painting. The authors are also grateful to the conservators who were involved in the maintenance and restoration of the painting for their invaluable support and exchange of information. Tatiana Vitorino acknowledges the Portuguese Science Foundation (FCT-MEC) for PhD grant PD/BD/105902/2014.
- 2.Wisse, J.: Albrecht Dürer (1471–1528) - Heilbrunn Timeline of Art History, The Metropolitan Museum of Art, http://www.metmuseum.org/toah/hd/durr/hd_durr.htm
- 3.Vitorino, T., Casini, A., Cucci, C., Gebejesje, A., Hiltunen, J., Hauta-Kasari, M., Picollo, M., Stefani, L.: Accuracy in colour reproduction: using a ColorChecker chart to assess the usefulness and comparability of data acquired with two hyper-spectral systems. In: Trémeau, A., Schettini, R., Tominaga, S. (eds.) CCIW 2015. LNCS, vol. 9016, pp. 225–235. Springer, Heidelberg (2015). doi: 10.1007/978-3-319-15979-9_21 CrossRefGoogle Scholar
- 4.Cucci, C., et al.: Open issues in hyperspectral imaging for diagnostics on paintings: when high spectral and spatial resolution turns into data redundancy. In: Salimbeni, R., Pezzati, L. (eds.) Proceedings of SPIE, vol. 8084, pp. 80848.1–80848.10 (2011)Google Scholar
- 5.Casini, A., et al.: Fiber optic reflectance spectroscopy and hyper-spectral image spectroscopy: two integrated techniques for the study of the Madonna dei Fusi. In: Salimbeni, R., Pezzati, L. (eds.) Proceedings of SPIE, vol. 5857, pp. 177–184 (2005)Google Scholar
- 6.Oleari, C.: Standard Colorimetry: Definitions, Algorithms and Software. John Wiley & Sons, UK (2016)Google Scholar
- 8.Bacci, M.: UV-Vis-NIR FORS spectroscopies. In: Ciliberto, E., Spoto, G. (eds.) Modern Analytical Methods in Art and Archaeology. Chemical Analytical Series, vol. 155, pp. 321–361. Wiley & Sons, New York (2000)Google Scholar
- 11.Rubio, M.T.: UV-VIS-NIR Spectroscopic Characterization of Two Modern Blue Pigments: Blue Phthalocyanine and Blue Indanhtrene. M.S. 1st Level Thesis in Materials and diagnostics techniques for Cultural Heritage. Pisa, Italy: Pisa University, Chemistry and Industrial Chemistry Department (2006)Google Scholar