Publication :
Non-destructive investigation of paintings on canvas by continuous wave terahertz imaging and flash thermography

En cours de chargement...
Vignette d'image
Date
2017-04-05
Direction de publication
Direction de recherche
Titre de la revue
ISSN de la revue
Titre du volume
Éditeur
Springer
Projets de recherche
Structures organisationnelles
Numéro de revue
Résumé
Terahertz (THz) imaging is increasingly used in the cultural heritage field. In particular, continuous wave (CW) and low frequency THz is attracting more attention. The first application of the THz technique inherent to the cultural heritage field dates back 10 years ago. Since 2006, tangible improvements have been conducted in the refinement of the technique, with the aim to produce clear maps useful for any art restorer. In this paper, a CW THz (0.1 THz) imaging system was used to inspect paintings on canvas both in reflection and in transmission modes. In particular, two paintings were analyzed: in the first one, similar materials and painting execution of the original artwork were used, while in the second one, the canvas layer is slightly different. Flash thermography was used herein together with the THz method in order to observe the differences in results for the textile support materials. A possible application of this method for the detection of artwork forgery requires some parameterization and analysis of various materials or thickness influence which will be addressed in a future study. In this work, advanced image processing techniques including principal component thermography (PCT) and partial least squares thermography (PLST) were used to process the infrared data. Finally, a comparison of CW THz and thermographic results was conducted.
Description
Revue
Journal of Nondestructive Evaluation, Vol. 36 (34) (2017)
DOI
10.1007/s10921-017-0414-8
URL vers la version publiée
Mots-clés
Terahertz imagery , Continuous wave , Flash thermography , Painting on canvas , Nondestructive testing
Citation
Type de document
article de recherche