Data di Pubblicazione:
2007
Citazione:
A new methodology for comparing IR reflectographic systems / G. Poldi, M. Gargano, N. Ludwig. - In: INFRARED PHYSICS & TECHNOLOGY. - ISSN 1350-4495. - 49:3(2007 Jan), pp. 249-253.
Abstract:
IR camera systems can be used for reflectographic analyses to detect and visualize underdrawings in paintings. Five technologies have been compared: CCD Si, FPA InGaAs, FPA HgCdTe and InSb detectors, and a vidicon tube. The comparison has been performed studying the relative contrast measured on homogeneous pictorial layers in infrared regions between 800 and 5000nm. This comparison was completed through measurements of spectral transmittance (400-2500nm) made with a spectrometer. The results have been related to the kind of pigment and of medium and to the thickness of the layer. All the systems have been tested also on the field, on paintings belonging to different museums. Some results are discussed.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
CCD image sensors ; exhibitions ; focal planes ; infrared spectra ; infrared spectrometers ; nondestructive testing ; painting ; photodetectors ; pigments ; television camera tubes
Elenco autori:
G. Poldi, M. Gargano, N. Ludwig
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