HSI
RIS

Hyper-spectral imaging is based on reflection spectroscopy that allows you to collect both the reflected and emitted light from a suitably illuminated surface, allowing the collection of spectra from every point of the visual field. The obtained cube, which constitutes the hyper-spectral image, contains both the spectra (of reflectance or fluorescence) and the spatial distribution of different materials on the analyzed surface. The integrated scanning system characterizes this tool which can record the image and spectra directly from a photographic tripod placed in front of the analyzed object, without external moving parts. The spectral information obtained allows the identification of dyes and pigments by comparison with a database of reflectance and fluorescence spectra collected on the materials used in different historical periods to produce polychrome objects. Furthermore, the hyper-spectral images allow to highlight surface inhomogeneities in the composition, providing a mapping of any areas of degradation and / or restoration interventions carried out in the past and not documented. Hyper-spectral imaging in the visible region is best used on almost flat works of art such as paintings, manuscripts, drawings, etc., it is completely non-invasive and easily usable in situ directly on the work of art.

Reflection vis hyperspectral imaging vis-nir hsi (400-1000 nm)

UV-VIS induced luminescence hyperspectral imaging

Analysis Method

1.0