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Proceedings Paper

Full-field high-speed optical coherence tomography system for evaluating multilayer and random tissues
Author(s): Igor Gurov; Alexey Karpets; Nikita Margariants; Elena Vorobeva
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Paper Abstract

Testing the condition of art subjects plays important role in reservation of Cultural Heritage. Optical Coherence Tomography (OCT) is a promising tool for nondestructive cross-sectional evaluating internal structure of material samples like varnish layer of paintings. It is important to use high-speed OCT systems for testing subsurface structure of objects with large area. In the paper, comparison of OCT systems from viewpoint of information capacity is given to select the most appropriate OCT system variant for evaluating 3D multilayer and random tissues. The method of sub- Nyquist sampling of OCT signals is considered that is used to decrease sampling speed in a few times. To provide high noise-immunity and stability when processing OCT signals with randomly variable parameters, the Kalman filtering method has been applied for evaluating sub-Nyquist sampled OCT signals. Experimental results of evaluating materials like varnish layer of paintings are presented and discussed.

Paper Details

Date Published: 16 July 2007
PDF: 8 pages
Proc. SPIE 6618, O3A: Optics for Arts, Architecture, and Archaeology, 661807 (16 July 2007); doi: 10.1117/12.726315
Show Author Affiliations
Igor Gurov, St. Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russia)
Alexey Karpets, St. Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russia)
Nikita Margariants, St. Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russia)
Elena Vorobeva, St. Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russia)


Published in SPIE Proceedings Vol. 6618:
O3A: Optics for Arts, Architecture, and Archaeology
Costas Fotakis; Luca Pezzati; Renzo Salimbeni, Editor(s)

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