Multispectral Imaging applied to Cultural Heritage
Multispectral Images of a painting (Laboratorio di Analisi non distruttive e Archeometria LANDA)
Multispectral Imaging has been developed by combining digital imaging and spectroscopy. It consists in acquiring two‐dimensional images at different wavelengths within a given spectral range and allows to simultaneously record spatial and spectral information. In the case of paintings, selecting different illuminants and spectral ranges stratigraphic information can be obtained: with UV sources, the fluorescence emission from the superficial layer; with visible light, the reflectance from pictorial layers; with IR sources, images of underdrawings and pentimenti.