Colour, reflectance and temperature. From the case study of Villa Trissino to new integrated applications of terrestrial lidar data for surveying and diagnostics
Keywords:
Color, lighting, visual perception, digital, designAbstract
New all-in-one laser scanning technologies applied to architectural surveying are proving to be effective, flexible, economical and expeditious, enabling the acquisition, within homologous detections, of different types of data. The literature on this subject is extensive and details the potential for morphological, textural and even colorimetric detection of artefacts. The now well-known techniques of mapping photographic images with a point cloud allow the spatial datum to be complemented point by point with the colour datum (RGB), in HR photographs. To support a good reading of the surface, the operator uses the reflectance value (R), generating graduated maps that enable visual recognition of the scanned elements. This applied research analyses and discusses the laser scanning reflectance of the case study Villa Trissino in Cricoli and the integration between reflectance maps and thermographic images of the case study Chiesa di San Filippo in Cagli. The two cases demonstrate that this type of investigation obtains essential information for subsequent restoration work that cannot be detected with the naked eye.
References
P.O. Gold, E. Cowgill, O. Kreylos, R.D. Gold, “A terrestrial lidar-based workflow for determining three-dimensional slip vectors and associated uncertainties”, Geosphere, Volume 8, Issue 2, pp. 431-442, 2012.
K. Themistocleous, A. Nisantzi, A. Agapiou, D. D. Alexakis, D. G. Hadjimitsis, V. Lysandrou, S. Perdikou, A. Retalis, N. Chrysoulakis, “Long Term Monitoring of Air Pollution on Monuments and Cultural Heritage Sites in Cyprus Using Satellite Remote Sensing”, International Journal of Heritage in the Digital Era Volume 1, Number 1 / March 2012.
C. E. Wittich, T. C. Hutchinson, R. L. Wood, F. Kuester, “A methodology for integrative documentation and characterization of culturally important statues to support seismic analysis”, Progress in Cultural Heritage Preservation Lecture Notes in Computer Science, Volume 7616, pp 825-832, 2012.
J. Kotte, “An investigation of quantifying and monitoring stone surface deterioration using three dimensional laser scanning”, Scholarly Commons, repository.upenn.edu/ hp_theses/128, 2009.
M. Zimbardo, “Valutazione dell’alterazione con laser scanner negli ammassi a struttura orientata e nella diagnostica dei beni monumentali”, Meccanica dei Materiali e delle Strutture, 2011.
F. Coren, D. Visintini, M. Balzani, P. Sterzai, G. Prearo, F. Uccelli, “Un algoritmo per la correzione radiometrica di dati laser terrestri”, ASITA conference proceedings 2005, Catania; 11/2005.
Rizzi A. et al., 2007 (b), “Digital preservation, documentation and analysis of paintings, monuments and large cultural heritage with infrared technology, digital cameras and range sensors” , Proceedings of the XXI CIPA Conference “AntiCIPAting the Future of Cultural Past”, held in Athens, Greece, 1-6 October 2007.
Avdelidis N. P., Moropoulou A., 2004, “Applications of infrared thermography for the investigation of historic structures”, Journal of Cultural Heritage, vol. 5, pp. 119 – 127.
F. Gugliermetti, F. Bisegna, L. Monti, “The “ID card” of ancient materials: spectral signature, colour and thermal analysis. A tool for the monitoring and conservation of the archaeological heritage”, Journal of the International Colour Association 8, 68-75, 2012
Y. Huang, J. W. Wu, “Infrared thermal image segmentations employing the multilayer level set method for non-destructive evaluation of layered structures”, NDT&E International 43, 34–44, 2010
D.Paoletti, D.Ambrosini, S.Sfarra, F. Bisegna, “Preventive thermographic diagnosis of historical buildings for consolidation”, Journal of Cultural Heritage 14 (2013) pp. 116–121
G. Beltramini, P. Guidolotti, “Andrea Palladio. Atlante delle Architetture”, Venezia, Marsilio Editore, 2001.
L. Puppi, D. Battilotti, Andrea Palladio, Milano, Electa, Electa Architettura Paperback, 1999.
http://www.portaleagentifisici.it/fo_ro_artificiali_ riflettanza_materiali.php?&lg=IT (April 2013)
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