Combined 3D Surveying and Raman Spectroscopy Techniques on Artifacts Preserved at Archaeological Museum of Lipari

Over the last years, the documentation of Heritage has been increasingly enriched with new forms of data representation and contents deriving from technological applications on artifacts and the progress of computer graphics: if, on the one hand, 3D survey has become an effective tool supplementing and supporting traditional study activities, as it can generate accurate and high-resolution digital models (available especially when physical access to materials is not possible, but also for enhancement or to formulate hypothetic reconstruction), on the other, archaeometry investigations can provide all that information (about composition, firing temperature of clay, etc.) that autopsy, comparison, formal, contextual, or bibliographic analysis cannot do on their own. This paper aims to show the potentialities of combined use of these non-destructive and non-contact approaches on the archaeological artifacts preserved at the Regional Museum of Lipari "L. Bernab Brea" for the analysis, diagnostic, fruition, and forthcoming restoration purposes. Different methodologies, such as laser-based surveying, sfm digital photogrammetry, and Raman spectroscopy have been, respectively, adopted and combined to get reconstruction and characterize several clay masks and two figured calyx-kraters. The latter technique, in particular, has proved to be useful in compositional analysis of dyes and pigments contained in the clay.