Hyperspectral Imaging as Powerful Technique for Investigating the Stability of Painting Samples

Abstract

The aim of this work is to present the utilization of Hyperspectral Imaging for studying the stability of painting samples to simulated solar radiation, in order to evaluate their use in the restoration field. In particular, ready-to-use commercial watercolours and powder pigments were tested, with these last ones being prepared for the experimental by gum Arabic in order to propose a possible substitute for traditional reintegration materials. Samples were investigated through Hyperspectral Imaging in the short wave infrared range before and after artificial ageing procedure performed in Solar Box chamber under controlled conditions. Data were treated and elaborated in order to evaluate the sensitivity of the Hyperspectral Imaging technique to identify the variations on paint layers, induced by photo-degradation, before they could be detected by eye. Furthermore, a supervised classification method for monitoring the painted surface changes, adopting a multivariate approach was successfully applied.

A dataset of visible – Short wave InfraRed reflectance spectra collected on pre-cooked pasta products

“…Visible and NIR spectroscopy techniques are actually utilized to perform both qualitative and quantitative analysis in different fields: i.e. in primary/secondary raw materials sector [4] , [5] , in cultural heritage [6] , [7] , in the agricultural and food industry [8] , [9] , [10] , [11] , [12] , [13] , in the pharmaceutical and chemical industry [14] , [15] , in clinical application [16] , [17] , [18] and more generally in analytical science [19] to perform systematic environmental remote and proximal sensing. In this data descriptor, reflectance Visible (Vis) and Short Wave Infrared (SWIR) spectra of pre-cooked pasta products are reported.…”

Optimized Method for Mapping Inorganic Pigments by Means of Multispectral Imaging Combined with Hyperspectral Spectroscopy for the Study of Vincenzo Pasqualoni’s Wall Painting at the Basilica of S. Nicola in Carcere in Rome

“…Finally, an absorption band at 2200 nm was detected due to calcium carbonate [39]. These two compounds are the constituents of the mural support [40][41][42] (reference spectrum was shown in Figure 3f).…”

Review of Methods for Documentation, Management, and Sustainability of Cultural Heritage. Case Study: Museum of King Jan III’s Palace at Wilanów

“…As the range between 1.4 um and 1.9 um is considered as "water absorption bands" [114], SWIR (shortwave infrared) sensors operating in this wavelength may also be used for this purpose. SWIR region may be applied in the monitoring of the degradation of painting materials [143]. Multispectral imaging has also been successfully applied in documentation of parchment degradation [144,145] and the analysis of pigment discoloration [140,146] used hyperspectral imagery to map corrosion products on outdoor bronze sculptures.…”