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10 August 2023 Dynamic infrared multispectral imaging of paintworks by active pulsed thermography
Alexandre Semerok, Vincent Detalle, Xueshi Bai, Thomas Calligaro, Stephane Boubanga Tombet
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Proceedings Volume PC12620, Optics for Arts, Architecture, and Archaeology (O3A) IX; PC1262007 (2023) https://doi.org/10.1117/12.2673872
Event: SPIE Optical Metrology, 2023, Munich, Germany
Abstract
Active pulsed thermography was applied for paintworks characterization and under surface defects analysis. Following rapid flash lamp excitation of the samples, a time-resolved thermal response in an extended infrared spectral range was recorded by two high-speed, high-sensitive mid- and long-wavelength infrared cameras. 2D phase shifts images were provided by the FFT software. The method is appropriate for rapid, remote, non-destructive characterization of various defects on painting layers and canvas, and detection of under-drawings, pentimenti, etc. Dynamic multispectral imaging in a wide infrared range may provide complementary information on cultural heritage specimens under inspection for their documentation, preservation and conservation.
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Alexandre Semerok, Vincent Detalle, Xueshi Bai, Thomas Calligaro, and Stephane Boubanga Tombet "Dynamic infrared multispectral imaging of paintworks by active pulsed thermography", Proc. SPIE PC12620, Optics for Arts, Architecture, and Archaeology (O3A) IX, PC1262007 (10 August 2023); https://doi.org/10.1117/12.2673872
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KEYWORDS
Thermography
Infrared imaging
Infrared radiation
Multispectral imaging
Cameras
Nondestructive evaluation
Phase shifts
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