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Open AccessArticle

Quantitative Assessment of Impact and Sensitivity of Imaging Spectroscopy for Monitoring of Ageing of Archival Documents

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Artlab Australia, Department of the Premier and Cabinet—Government of South Australia, 70 Kintore Avenue, Adelaide, SA 5000, Australia
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DEMCON Advanced Mechatronics Enschede BV, Institutenweg 25, 7521 PH Enschede, The Netherlands
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Aerospace Non-Destructive Testing Laboratory, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands
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Nationaal Archief (National Archives of The Netherlands), Prins Willem Alexanderhof 20, 2595 BE The Hague, The Netherlands
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Institute for Sustainable Heritage, University College London, 14 Upper Woburn Place, London WC1H 0NN, UK
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Heritage Science Lab Ljubljana, University of Ljubljana, Vecna Pot 113, 1000 Ljubljana, Slovenia
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Author to whom correspondence should be addressed.
Heritage 2021, 4(1), 105-124; https://doi.org/10.3390/heritage4010006
Received: 18 December 2020 / Revised: 4 January 2021 / Accepted: 7 January 2021 / Published: 12 January 2021
(This article belongs to the Special Issue Optical Technologies Applied to Cultural Heritage)
Ageing of historical documents often results in changes in the optical properties of the constituent materials. Imaging spectroscopy (IS) can be a valuable tool for monitoring of such changes, if the method fulfils two important conditions. Firstly, compared to natural ageing, the accumulated light dose from repeated measurements of the monitored document must not induce any significant degradation. Secondly, the monitoring instrumentation and procedures should be sensitive enough to detect changes in the materials before they become visible. We present experimental methods to evaluate the suitability of IS instrumentation for monitoring purposes. In the first set of experiments, the impact of repeated monitoring measurements was determined using a set of Blue Wool Standard materials. In the second set of experiments, the capability of the instrument to detect spectral changes was tested using ISO standard materials and several documents representative of European archive collections. It is concluded that the tested hyperspectral instrument is suitable for monitoring of the colour change of documents during display. The described experimental approach can be recommended to test the suitability of other imaging spectroscopy instruments for monitoring applications. View Full-Text
Keywords: light damage; colour difference; ageing; monitoring; imaging spectroscopy; spectral imaging; exhibitions; preventive; quantitative; books; paper; conservation; exhibitions; archive; library light damage; colour difference; ageing; monitoring; imaging spectroscopy; spectral imaging; exhibitions; preventive; quantitative; books; paper; conservation; exhibitions; archive; library
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MDPI and ACS Style

Padoan, R.; Klein, M.E.; Groves, R.M.; de Bruin, G.; Steemers, T.A.G.; Strlič, M. Quantitative Assessment of Impact and Sensitivity of Imaging Spectroscopy for Monitoring of Ageing of Archival Documents. Heritage 2021, 4, 105-124. https://doi.org/10.3390/heritage4010006

AMA Style

Padoan R, Klein ME, Groves RM, de Bruin G, Steemers TAG, Strlič M. Quantitative Assessment of Impact and Sensitivity of Imaging Spectroscopy for Monitoring of Ageing of Archival Documents. Heritage. 2021; 4(1):105-124. https://doi.org/10.3390/heritage4010006

Chicago/Turabian Style

Padoan, Roberto; Klein, Marvin E.; Groves, Roger M.; de Bruin, Gerrit; Steemers, Ted A.G.; Strlič, Matija. 2021. "Quantitative Assessment of Impact and Sensitivity of Imaging Spectroscopy for Monitoring of Ageing of Archival Documents" Heritage 4, no. 1: 105-124. https://doi.org/10.3390/heritage4010006

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