Reflectographic analyses applied on paintings can be performed using cameras equipped with different detectors with different abilities in detecting and visualizing underdrawings, repainting, restorations, and other nonvisible information. In this research, the results obtained through thermographic imaging followed by statistical imaging postprocessing methods have been compared with those obtained with traditional reflectographic methods in the short-wave infrared range. The comparison has been performed studying the thermal sequence after a single pulse of light with a different spectrum of ad hoc mock-ups. Results showed that for limited cases, signal-to-noise ratio seems to be more relevant in obtaining reliable images of underdrawings with respect to the effect of optical absorption of visible light by painting layers.
Pulsed thermography and infrared reflectography: comparative results for underdrawing visualization in paintings / J. Melada, M. Gargano, N. Ludwig. - In: APPLIED OPTICS. - ISSN 1559-128X. - 61:8(2022 Jun 10), pp. E33-E38. [10.1364/AO.445047]
Pulsed thermography and infrared reflectography: comparative results for underdrawing visualization in paintings
J. MeladaPrimo
Software
;M. Gargano
Secondo
Data Curation
;N. LudwigUltimo
Writing – Original Draft Preparation
2022
Abstract
Reflectographic analyses applied on paintings can be performed using cameras equipped with different detectors with different abilities in detecting and visualizing underdrawings, repainting, restorations, and other nonvisible information. In this research, the results obtained through thermographic imaging followed by statistical imaging postprocessing methods have been compared with those obtained with traditional reflectographic methods in the short-wave infrared range. The comparison has been performed studying the thermal sequence after a single pulse of light with a different spectrum of ad hoc mock-ups. Results showed that for limited cases, signal-to-noise ratio seems to be more relevant in obtaining reliable images of underdrawings with respect to the effect of optical absorption of visible light by painting layers.File | Dimensione | Formato | |
---|---|---|---|
6_ao PULSED-61-8-E33.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
16.1 MB
Formato
Adobe PDF
|
16.1 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
6_ao+PULSED-61-8-E33(1)_compressed.pdf
accesso riservato
Tipologia:
Publisher's version/PDF
Dimensione
9.94 MB
Formato
Adobe PDF
|
9.94 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.