Optical coherence tomography complemented by hyperspectral imaging for the study of protective wood coatings

L. M. Dingemans; V. M. Papadakis; P. Liu; A. J. L. Adam; R. M. Groves

doi:10.1117/12.2184716

30 June 2015 Optical coherence tomography complemented by hyperspectral imaging for the study of protective wood coatings

L. M. Dingemans, V. M. Papadakis, P. Liu, A. J. L. Adam, R. M. Groves

Author Affiliations +

Proceedings Volume 9527, Optics for Arts, Architecture, and Archaeology V; 952708 (2015) https://doi.org/10.1117/12.2184716
Event: SPIE Optical Metrology, 2015, Munich, Germany

Abstract

Optical coherence tomography (OCT) is a contactless and non-destructive testing (NDT) technique based on low-coherence interferometry. It has recently become a popular NDT-tool for evaluating cultural heritage. In this study, protective coatings on wood and their penetration into the wood structure were measured with a customized infrared fiber optic OCT instrument. In order to enhance the understanding of the OCT measurements of coatings on real wooden samples, an optimization of the measuring and analyzing methodology was performed by developing an averaging approach and by post-processing the data. The collected information was complemented by data obtained with hyperspectral imaging to allow data from local OCT A-scans to be used in mapping the coating thicknesses over larger areas.

Citation Download Citation

L. M. Dingemans, V. M. Papadakis, P. Liu, A. J. L. Adam, and R. M. Groves "Optical coherence tomography complemented by hyperspectral imaging for the study of protective wood coatings", Proc. SPIE 9527, Optics for Arts, Architecture, and Archaeology V, 952708 (30 June 2015); https://doi.org/10.1117/12.2184716

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