A new high-resolution IR-colour scanner for the non-destructive evaluation of works of art

Year: 2003

Authors: Marras L., Materazzi M., Pezzati L., Poggi P.

Autors Affiliation: Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: Infrared (IR) reflectography is a non-destructive optical technique used for painting analysis which allows the visualisation of details hidden by the paint layers, since these are generally transparent to the radiation in the near-IR. The National Institute for Applied Optics (INOA), based in Florence (Italy), introduced high-resolution reflectography around the end of the 80s, by developing a prototype of an IR scanner. This technique was recently improved with the development of a special optical head for the IR scanner that permits the simultaneous acquisition of the IR image (the reflectogram) and the colour image having the same spatial resolution. The perfect superimposition of these two images is extremely useful in the analysis of the reflectogram. The authors applied the device to the diagnostics of very important paintings, such as the Madonna del Cardellino by Raphael and La Tempesta by Giorgione.

Journal/Review: INSIGHT

Volume: 45 (4)      Pages from: 276  to: 279

KeyWords: Infrared (IR) reflectography

ImpactFactor: 0.450
Citations: 2
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