Search results for " scanner laser"
showing 3 items of 3 documents
Sviluppo e rappresentazione digitale di superfici architettoniche complesse per la documentazione e il restauro
2015
Questa ricerca presenta la metodologia che è stata utilizzata nella rappresentazione delle colonne del Tempio C nel parco archeologico di Selinunte (TP). Tale metodologia – basata sull'impiego di superfici matematiche ausiliarie e tools di modellazione NURBS – ha permesso di sviluppare sul piano le superfici mesh di modelli 3D texturizzati realizzati da dati acquisiti con tecniche di rilevamento laser scanning e fotogrammetriche.
Valutazione dell’alterazione con laser scanner negli ammassi a struttura orientata e nella diagnostica dei beni monumentali
2011
The applications of laser technology in the field of Rock Mechanics are at a stage of development that allow a reliable use for the reliefs of the mesostructure and for the morphological reconstruction of monuments in place of traditional techniques such as, for example, photogrammetry. The most recent research suggests that the laser may also allow assessment of characteristics such as roughness, which is known to affect the shear strength of discontinuities. Assessing the ratio between the energy of the reflected ray and the one emitted by the instrument, called "reflectivity (I)", it seems possible, also get information on the status of surface discontinuities or areas of historic monume…
Measure of a limestone weathering degree using Laser Scanner.
2013
The weathering degree of the building materials and natural stones is generally quantified as the decrement of some mechanical features that can be measured experimentally by means of compressive tests or point load tests in the laboratory or Schmidt hammer tests carried out in situ. Such destructive or damaging tests are unacceptable in case of cultural heritage since even small amounts of damage must be avoided. This work shows a correlation between Schmidt hammer rebound values and the reflectivity that is detected by means of terrestrial scanner laser; therefore it allows assessing the weathering degree of buildings or stones in situ. The results demonstrate that such an investigation c…