Infrared Hyperspectral Spectroscopic Mapping Imaging from 800 to 5000 nm. A Step Forward in the Field of Infrared “Imaging”
The purpose of this work is the development of a method for the acquisition of multispectral images at the infrared region on cultural heritage artworks. The infrared light is able to penetrate into deeper, to the surface, layers, especially at the mid and far infrared spectrum. To this end, Fourier-transform Infrared spectrophotometer, is utilized for the acquisition of multispectral data via a diffuse reflectance integration sphere to improve the quality of the detected signal. The integration sphere is mounted on a mechanical system to achieve a precise mapping of a region of interest. Then, The acquired data are combined to form the requested multispectral mapping imaging of the artwork. Advanced signal processing techniques are utilized on the spatial and spectral measurements to de-noise and enhance the imaging. Finally, the multispectral mapping reveals the sub-surface details of different inner layers.
KeywordsFTIR Hyperspectral Mapping imaging Integration sphere
This work is part of Scan4Reco project that has received funding from the European Union Horizon 2020 Framework Programme for Research and Innovation under grant agreement no 665091.
- 1.Kubik, M.: Hyperspectral imaging: a new technique for the non-invasive study of artworks. In: Physical Techniques in the Study of Art, Archaeology and Cultural Heritage, vol. 2, pp. 199–259. Elsevier (2007)Google Scholar
- 5.Karagiannis, G., et al.: Processing of UV/VIS/nIR/mIR diffuse reflectance spectra and acoustic microscopy echo graphs for stratigraphy determination, using neural networks and wavelet transform. IEEE ICTTA, pp. 1–7 (2008)Google Scholar
- 15.Hariharan, P.: Basics of Interferometry. Academic Press, San Diego (2010)Google Scholar
- 16.Battle, G.C., Connolly, T., Keesee, A.M.: Laser Window and Mirror Materials. Springer, Boston (2012)Google Scholar
- 17.Goebel, D.G.: Generalized integrating-sphere theory. Opt. Soc. Am. Appl. Opt. 6(1), 125–128 (1967)Google Scholar
- 18.Burns, D.A., Ciurczak, E.W.: Handbook of Near-Infrared Analysis. CRC Press, Boca Raton (2007)Google Scholar