Non-invasive quantitative characterization of varnish thickness on gilt leather by line-field confocal optical coherence tomography - Archive ouverte HAL Accéder directement au contenu
Proceedings/Recueil Des Communications Proceedings of SPIE, the International Society for Optical Engineering Année : 2023

Non-invasive quantitative characterization of varnish thickness on gilt leather by line-field confocal optical coherence tomography

Résumé

Line-field confocal optical coherence tomography (LC-OCT) is an alternative to conventional OCT that combines OCT and confocal microscopy. This technique gives access to three-dimensional (3D) images with a micrometer resolution in the three spatial directions and enhances signal from the deepest layers within the material. After an experimental determination of the device characteristics, the technique is used for the investigation of16 th to 18 th century fragments of gilt leathers wall-hangings. In these objects, the various layers within the varnish can be identified and the effect of a restoration treatment can be observed to validate the varnish removal process.
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Dates et versions

hal-04186113 , version 1 (23-08-2023)

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Giulia Galante, Maëlle Vilbert, Laurianne Robinet, Marie-Claire Schanne-Klein, Gaël Latour. Non-invasive quantitative characterization of varnish thickness on gilt leather by line-field confocal optical coherence tomography. Optics for Arts, Architecture, and Archaeology IX (O3A), SPIE Optical Metrology, 2023, Proceedings of SPIE, the International Society for Optical Engineering, 12620, pp.1262006, 2023, Proc. SPIE 12620, Optics for Arts, Architecture, and Archaeology (O3A) IX, ⟨10.1117/12.2672564⟩. ⟨hal-04186113⟩
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