Combined use of infrared imaging techniques for the study of underlying features in the Santa Maria in Cosmedin altarpiece

Mercuri, F.; Ceccarelli, Sofia; Orazi, Noemi; Cicero, Cristina; Paoloni, S.; Felici, Anna Candida; Matera, Frank J.; Nuzzo, Mariano; Zammit, U.

doi:10.1111/arcm.12653

Cited by 11 publications

(6 citation statements)

References 36 publications

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“…Thanks to the capability of some kinds of pigments to be transparent to IR radiation, this technique is often used to highlight the possible presence of a preparatory drawing [13,14]. In this specific case, it has been employed to obtain preliminary information on possible differences in the inks and pigments composition.…”

Section: Imaging Investigations: Irrmentioning

confidence: 99%

The Ethiopian Magic Scrolls: A Combined Approach for the Characterization of Inks and Pigments Composition

et al. 2023

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The Ethiopian magic scrolls are traditional parchment artifacts used by the Christians of Ethiopia as protection against disease and demonic possessions. On the occasion of their restoration in the Accademia delle Belle Arti di Bologna (Italy); a preliminary characterization before the treatments has been performed on four Ethiopian scrolls belonging to the Archivio storico della provincia di Cristo Re dei Frati Minori dell’Emilia Romagna of Bologna (Italy). In order to plan an effective preservative restoration procedure and; at the same time; to investigate the manufacturing techniques; the text and the decorations on the magic scrolls were studied and characterized. A combined approach by imaging and compositional techniques was used: Infrared Reflectography (IRR) for the preliminary characterization of the graphic supports and the identification of the points to sample the chemical measurements; and the spectroscopic analyses to clarify the hypothesized investigations and confirm the chemical composition of the inks. In particular; Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) spectroscopy has provided information relating to the molecular composition of inks and pigments; while a characterization of the constituent elements is obtained with the Ion Beam Analysis (IBA). The ink composition proved to be consistent with data generally documented in the literature and contributing to the expansion of knowledge on Ethiopian magic scrolls and their production.

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Section: Imaging Investigations: Irrmentioning

confidence: 99%

The Ethiopian Magic Scrolls: A Combined Approach for the Characterization of Inks and Pigments Composition

et al. 2023

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“…Pulsed thermography (PT) has become a widely employed method for non-destructive investigations of artworks, providing information on defects, inhomogeneities, and subsurface features in different types of artworks, such as bronzes [41,42], illuminations [43,44], paintings on different kinds of support [45][46][47]. PT relies on the moderate sample heating produced by the absorption of VIS light pulses and on the subsequent time-resolved measurement of the IR radiation locally emitted from the sample surface.…”

Section: Pulsed Thermography and Mwir Reflectographymentioning

confidence: 99%

Remote and contactless infrared imaging techniques for stratigraphical investigations in paintings on canvas

et al. 2021

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In the analysis of complex stratigraphical structures like painted artefact, infrared (IR) techniques can provide precious information about elements hidden under superficial layers of the artwork, such as pictorial features and structural defects. This paper presents a novel complementary use of reflectographic and thermographic techniques for the survey of three baroque paintings, preserved at the Chigi Palace in Ariccia (Italy). First, the IR-ITR laser scanner prototype has been used for the preliminary and remote near-IR reflectographic survey of the areas where the canvas was located. The resulting map was then used for planning the thermographic and mid-IR reflectographic studies, focusing the analyses on the most interesting areas of one of the paintings, called “La Primavera”. The combination of the three imaging techniques revealed several details not visible by the naked eye, such as restored lacunas and pentimenti, demonstrating the validity and complementarity of the proposed combined methodologies.

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“…In the IRT detection of artwork defects, the primary criterion relies on the temperature contrast between the area with defects and its surrounding regions in thermal images [ 8 , 9 , 10 ]. However, due to various factors, such as the equipment used for image acquisition and the experimental environment, the thermographic data obtained through IRT often contain noise, and defects may be obscured by the presence of an inhomogeneous background.…”

Section: Introductionmentioning

confidence: 99%

Generative Deep Learning-Based Thermographic Inspection of Artwork

Liu

Wang

Jiang

et al. 2023

Sensors

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Infrared thermography is a widely utilized nondestructive testing technique in the field of artwork inspection. However, raw thermograms often suffer from problems, such as limited quantity and high background noise, due to limitations inherent in the acquisition equipment and experimental environment. To overcome these challenges, there is a growing interest in developing thermographic data enhancement methods. In this study, a defect inspection method for artwork based on principal component analysis is proposed, incorporating two distinct deep learning approaches for thermographic data enhancement: spectral normalized generative adversarial network (SNGAN) and convolutional autoencoder (CAE). The SNGAN strategy focuses on augmenting the thermal images, while the CAE strategy emphasizes enhancing their quality. Subsequently, principal component thermography (PCT) is employed to analyze the processed data and improve the detectability of defects. Comparing the results to using PCT alone, the integration of the SNGAN strategy led to a 1.08% enhancement in the signal-to-noise ratio, while the utilization of the CAE strategy resulted in an 8.73% improvement.

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Combined use of infrared imaging techniques for the study of underlying features in the Santa Maria in Cosmedin altarpiece

Cited by 11 publications

References 36 publications

The Ethiopian Magic Scrolls: A Combined Approach for the Characterization of Inks and Pigments Composition

The Ethiopian Magic Scrolls: A Combined Approach for the Characterization of Inks and Pigments Composition

Remote and contactless infrared imaging techniques for stratigraphical investigations in paintings on canvas

Generative Deep Learning-Based Thermographic Inspection of Artwork

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