(AMU – Aix-Marseille Université & Theoretical Physics, ETH Zürich; AICON 3D Systems GmbH; IKANT, Austrian Academy of Sciences, Marseille, France)

Keywords: Multispectral, Luminescence, 3D

The paper presents an interesting investigation about the combination of multispectral and 3D imaging aiming at the analysis of the condition and preservation of an ancient vase. In particular the work reports the combination of ultraviolet-induced luminescence (UVL) and visible-reflected (VIS) imaging with image- and range-based 3D modelling. The most frequently used reflectance imaging techniques are visible-reflected (VIS or VISR, corresponding to standard photography, i.e. the acquisition of RGB colour information), infrared-reflected (IRR) and ultraviolet-reflected (UVR), while luminescence imaging methods include ultraviolet-induced luminescence with emission in the visible range (UVL or UIL), visible-induced visible luminescence (VIVL) and visibleinduced infrared luminescence (VIL). VIS corresponds to standard photography: images are generated using visible radiation and collecting the reflected light in the visible region. It hence provides reference images to interpret images produced from other multispectral techniques. The case study is an Attic vase, part of the pottery collection of the Landesmuseum Rudolfinum (Carinthia, Austria) and temporarily stored in the Institute of Archaeology of the University of Graz, Austria. The aim of this investigation is to exploit the added-value provided by mapping multispectral imaging onto 3D geometry for a comprehensive knowledge of the condition of a restored Cultural Heritage (CH) item. The presentation will also compare and discuss different 3D surface scanning techniques and imaging strategies for a wider range of applications.

Relevance for the conference: Combination of 3D and 2D data for quantitative analysis and visualization
Relevance for the session: Combine different methods to get more out of the data
Innovation: Combine different methods to get more out of the data
• Mara, H. and Portl, J., 2013. Acquisition and documentation of vessels using high-resolution 3D-scanners (pp. 25-40). Verlag der Österreichischen Akademie der Wissenschaften (VÖAW).