title: A portable UV-fluorescence multispectral imaging system for the analysis of painted surfaces.
abstract: A portable fluorescence multispectral imaging system was developed and has been used for the analysis of artistic surfaces. The imaging apparatus exploits two UV lamps for fluorescence excitation and a liquid crystal tunable filter coupled to a low-noise charge coupled device as the image detector. The main features of the system are critically presented, outlining the assets, drawbacks, and practical considerations of portability. A multivariate statistical treatment of spectral data is further considered. Finally, the in situ analysis with the new apparatus of recently restored Renaissance wall paintings is presented.
authors.affiliation: ULTRAS-CNR-INFM and IFN-CNR, Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy.
authors.forename: Daniela
authors.initials: D
authors.lastname: Comelli
authors.forename: Gianluca
authors.initials: G
authors.lastname: Valentini
authors.forename: Austin
authors.initials: A
authors.lastname: Nevin
authors.forename: Andrea
authors.initials: A
authors.lastname: Farina
authors.forename: Lucia
authors.initials: L
authors.lastname: Toniolo
authors.forename: Rinaldo
authors.initials: R
authors.lastname: Cubeddu