Scientific Results

A scanning device for VIS-NIR multispectral imaging of paintings

Year: 2008

Authors: Bonifazzi C., Carcagnì P., Fontana R., Greco M., Mastroianni M., Materazzi M., Pampaloni E., Pezzati L., Bencini D.

Autors Affiliation: Departement of Biomedical Science, University of Ferrara, via Fossato di Mortara, 44100 Ferrara, Italy;
CNR – Istituto Nazionale di Ottica Applicata, Sez. di Lecce, via Barsanti, 73010 Arnesano (LE) Italy;
CNR – Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: We present a scanning device for multispectral imaging of paintings in the 380-2300 nm spectral range (32 VIS + 14 NIR bands). The system is based on contact-less and single-point measurement of the spectral reflectance factor. Multispectral images are obtained by scanning the painted surface under investigation. At present the VIS and NIR modules work separately due to the lack of synchronization between them. Measurement campaigns were carried out on several paintings in situ and at the INOA Optical Metrology Laboratory located inside the Opificio delle Pietre Dure in Florence. We report herein on the measurements carried out on a few panel and canvas paintings. Multivariate image analyses (MIAs) were performed and the detected images were analysed by means of the conventional principal component analysis (PCA) and the K-nearest-neighbouring cluster analysis (KNN).

Journal/Review: JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS

Volume: 10 (6)      Pages from: 064011  to: 064011

KeyWords: Multi-spectral imaging; spectral reflectance factor; principal component analysis; multivariate image analysis; Cluster Analysis
DOI: 10.1088/1464-4258/10/6/064011

Citations: 18
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English