OCT and NMR for non-invasive in-situ monitoring of the vulnerability of rock art monuments

Elizabeth Bemand; Martin Bencsik; Haida Liang

doi:10.1117/12.890084

6 June 2011 OCT and NMR for non-invasive in-situ monitoring of the vulnerability of rock art monuments

Elizabeth Bemand, Martin Bencsik, Haida Liang

Proceedings Volume 8084, O3A: Optics for Arts, Architecture, and Archaeology III; 80840H (2011) https://doi.org/10.1117/12.890084
Event: SPIE Optical Metrology, 2011, Munich, Germany

Abstract

This paper will introduce a new application of Optical Coherence Tomography (OCT) to the monitoring of vulnerability of rock art monuments in-situ. The porosity of the host rock is an important factor affecting the susceptibility of rock art monuments to decay. Pore characteristics of rocks are one of the main factors that control the intensity of physical deterioration. OCT has successfully been applied to paintings and archaeological objects, including geological materials, to produce cross sectional images non-invasively. The stack of cross sectional images can be rendered as a volume to visualise the structure in depth over an extended area. Preliminary studies show that it can directly image the pores and subsurface structure to within 500microns of the surface depending on lithology. This study aims to analyse this stack of cross sectional images computationally to enable the description of the pore space distribution which will be compared with spatially resolved NMR porosity measurement for the samples.

Citation Download Citation

Elizabeth Bemand, Martin Bencsik, and Haida Liang "OCT and NMR for non-invasive in-situ monitoring of the vulnerability of rock art monuments", Proc. SPIE 8084, O3A: Optics for Arts, Architecture, and Archaeology III, 80840H (6 June 2011); https://doi.org/10.1117/12.890084

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