Scientific Results

Spectral and colorimetric characterization of painted surface: a scanning device for imaging analysis of painting

Year: 2005

Authors: Carcagnì P., Della Patria A., Fontana R., Greco M., Mastroianni M., Materazzi M., Pampaloni E., Pezzati L., Piccolo R.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
Istituto Nazionale di Ottica Applicata, Sez. di Lecce, via Barsanti, 73010 Arnesano (LE), Italy

Abstract: In the last few years multispectral imaging has entered the field of painting diagnostics and conservation because of its
effectiveness and safety. It provides spectral and colorimetric characterization of the whole paint layer, suitable to
document the conservation state of the artwork and useful in the study for the identification of pigments.
Here we present a high-resolution scanning system for 32-band multispectral imaging of paintings in the 380√∑800 nm
spectral region. This system is based on a fast spectrometer for contact-less single-point measures mounted on two
orthogonal XY translation stages. It can scan an area of 1 m2 with a spatial resolution of 4 dots/mm and a spectral
resolution of 10 nm.
Spectral reflection factor and tristimulus value measurements were carried out on coloured ceramic tiles and the results
were compared with the corresponding certified values.
Multispectral analysis was performed on a few ancient paintings and spectrophotometric results are shown.

Journal/Review: PROCEEDINGS OF SPIE

Volume: 5857      Pages from: 58570T-1  to: 58570T-10

KeyWords: Painting analysis; mutispectral imaging; colorimetric characterization; spectral reflectance factor;
DOI: 10.1117/12.612565

Citations: 1
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