Print Email Facebook Twitter TeraHertz imaging of hidden paint layers on canvas Title TeraHertz imaging of hidden paint layers on canvas Author Adam, A.J.L. Planken, P.C.M. Meloni, S. Dik, J. Faculty Applied Sciences Department Imaging Science and Technology Date 2009-02-19 Abstract We show terahertz reflection images of hidden paint layers in a painting on canvas and compare the results with X-ray Radiography and Infrared Reflectography. Our terahertz measurements show strong reflections from both the canvas/paint interface and from the raw umber/lead white interface, indicating sufficient refractive-index contrast. Our results show that X-rays cannot be used to image through the lead white pigment which effectively blocks the X-rays. Although Infrared Reflectography is capable of vaguely observing the hidden paint strokes from the canvas side, we show that only terahertz imaging is capable of providing information on the thickness of the hidden paint layers. Terahertz imaging is thus shown to be a powerful imaging method for art historians, conservators and conservation scientists. Subject spectroscopyfar infraredteraherzterahertz imaging To reference this document use: http://resolver.tudelft.nl/uuid:a4c9c50b-b38b-4a49-9351-3b3ed1c992ef DOI https://doi.org/10.1364/OE.17.003407 Publisher Optical Society of America ISSN 1094-4087 Source http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-5-3407 Source Optics Express, 17 (5), 2009 Part of collection Institutional Repository Document type journal article Rights (c) 2009 Optical Society of America Files PDF Planken2_2009.pdf 2.04 MB Close viewer /islandora/object/uuid:a4c9c50b-b38b-4a49-9351-3b3ed1c992ef/datastream/OBJ/view