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Keywords = pictorial artworks authentication

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17 pages, 7770 KiB  
Article
Using MA-rFTIR Mapping as a Tool to Assess the Efficacy of Cleaning Treatments and to Aid in the Restoration Activities of Paintings
by Lucilla Pronti, Martina Romani, Marcella Ioele, Gloria Tranquilli, Francesca Fumelli, Serena Sechi, Angelica Donati, Elena Cianca, Ilaria Sinceri and Mariangela Cestelli Guidi
Coatings 2024, 14(4), 511; https://doi.org/10.3390/coatings14040511 - 19 Apr 2024
Viewed by 1310
Abstract
The removal of non-original superimposed layers covering the original pictorial layer in paintings is a common practice to restore the authentic appearance of surfaces and mitigate potential risks to artwork preservation. Contemporary assessments of the effectiveness of such cleaning treatments often employ non-destructive [...] Read more.
The removal of non-original superimposed layers covering the original pictorial layer in paintings is a common practice to restore the authentic appearance of surfaces and mitigate potential risks to artwork preservation. Contemporary assessments of the effectiveness of such cleaning treatments often employ non-destructive analytical methods. However, many existing techniques face limitations, either lacking specificity in compound identification or analyzing very limited areas (<millimeters) through a point-by-point approach. This study introduces the application of a macro Fourier transform infrared scanner, in reflection mode (MA-rFTIR), as an effective tool for supporting restorers during cleaning processes. This method proved successful in addressing challenges related to the removal of calcium oxalate films and non-original superimposed layers on two ancient paintings. Full article
(This article belongs to the Special Issue Materials Characterization and Surface Analysis for Cultural Heritage)
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13 pages, 2439 KiB  
Article
Estimation of the Precision of a Structured Light System in Oil Paintings on Canvas
by David Sánchez-Jiménez, Fernando Buchón-Moragues, José M. Bravo and Juan V. Sánchez-Pérez
Sensors 2019, 19(22), 4966; https://doi.org/10.3390/s19224966 - 14 Nov 2019
Cited by 2 | Viewed by 2331
Abstract
The conservation and authentication of pictorial artworks is considered an important part of the preservation of cultural heritage. The use of non-destructive testing allows the obtention of accurate information about the state of pictorial artworks without direct contact between the equipment used and [...] Read more.
The conservation and authentication of pictorial artworks is considered an important part of the preservation of cultural heritage. The use of non-destructive testing allows the obtention of accurate information about the state of pictorial artworks without direct contact between the equipment used and the sample. In particular, the use of this kind of technology is recommended in obtaining three-dimensional surface digital models, as it provides high-resolution information that constitutes a kind of fingerprint of the samples. In the case of pictorial artworks with some kind of surface relief, one of the most useful technologies is structured light (SL). In this paper, the minimum difference in height that can be distinguished with this technology was estimated, establishing experimentally both the error committed in the measurement process and the precision in the use of this technology. This study focused on the case of oil paintings on canvas and developed a low-cost system to ensure its wide use. Full article
(This article belongs to the Special Issue New Methods and Applications of Nondestructive Testing in Close Ranging)
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10 pages, 4076 KiB  
Article
Application of Structured Light System Technique for Authentication of Wooden Panel Paintings
by Fernando Buchón-Moragues, José María Bravo, Marcelino Ferri, Javier Redondo and Juan Vicente Sánchez-Pérez
Sensors 2016, 16(6), 881; https://doi.org/10.3390/s16060881 - 14 Jun 2016
Cited by 17 | Viewed by 5284
Abstract
This paper presents a new application of photogrammetric techniques for protecting cultural heritage. The accuracy of the method and the fact that it can be used to carry out different tests without contact between the sample and the instruments can make this technique [...] Read more.
This paper presents a new application of photogrammetric techniques for protecting cultural heritage. The accuracy of the method and the fact that it can be used to carry out different tests without contact between the sample and the instruments can make this technique very useful for authenticating and cataloging artworks. The application focuses on the field of pictorial artworks, and wooden panel paintings in particular. In these works, the orography formed by the brushstrokes can be easily digitalized using a photogrammetric technique, called Structured Light System, with submillimeter accuracy. Thus, some of the physical characteristics of the brushstrokes, like minimum and maximum heights or slopes become a fingerprint of the painting. We explain in detail the general principles of the Structured Light System Technique and the specific characteristics of the commercial set-up used in this work. Some experiments are carried out on a sample painted by us to check the accuracy limits of the technique and to propose some tests that can help to stablish a methodology for authentication purposes. Finally, some preliminary results obtained on a real pictorial artwork are presented, providing geometrical information of its metric features as an example of the possibilities of this application. Full article
(This article belongs to the Section Physical Sensors)
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