Nondestructive evaluation of heritage object coatings with four hyperspectral imaging systems

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2021-02
Major/Subject
Mcode
Degree programme
Language
en
Pages
15
1-15
Series
Coatings, Volume 11, issue 2
Abstract
Advanced imaging techniques can noninvasively characterise, monitor, and evaluate how conservation treatments affect cultural heritage objects. In this specific field, hyperspectral imaging allows nondestructive characterisation of materials by identifying and characterising colouring agents, binders, and protective coatings as components of an object’s original construction or later historic additions. Furthermore, hyperspectral imaging can be used to monitor deterioration or changes caused by environmental conditions. This paper examines the potential of hyperspectral imaging (HSI) for the evaluation of heritage objects. Four cameras operating in different spectral ranges were used to nondestructively scan a beehive panel painting that originated from the Slo-vene Ethnographic Museum collection. The specific objective of this research was to identify pigments and binders present in the samples and to spatially map the presence of these across the surface of the art piece. Merging the results with databases created in parallel using other reference methods allows for the identification of materials originally used by the artist on the panel. Later interventions to the original paintings can also be traced as part of past conservation campaigns.
Description
Keywords
Cultural heritage, Hyperspectral imaging, Nondestructive testing, Painted beehive panels, Surface characterisa-tion
Other note
Citation
Sandak, J, Sandak, A, Legan, L, Retko, K, Kavčič, M, Kosel, J, Poohphajai, F, Diaz, R H, Ponnuchamy, V, Sajinčič, N, Gordobil, O, Tavzes, Č & Ropret, P 2021, ' Nondestructive evaluation of heritage object coatings with four hyperspectral imaging systems ', Coatings, vol. 11, no. 2, 244, pp. 1-15 . https://doi.org/10.3390/coatings11020244