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http://hdl.handle.net/2122/12716
Authors: | Teza, Giordano* Pesci, Arianna* |
Title: | Geometric characterization of a cylinder-shaped structure from laser scanner data: Development of an analysis tool and its use on a leaning bell tower | Journal: | Journal of Cultural Heritage | Series/Report no.: | /14 (2013) | Issue Date: | 2013 | DOI: | 10.1016/j.culher.2012.10.015 | Abstract: | he romanesque-byzantine style, 1000 year old leaning bell tower of Caorle (Venice Province, Italy) is a unique masonry structure, characterized by single and double lancet windows harmonically distributed on a cylinder-shaped shaft surmounted by a conic cusp. A terrestrial laser scanning (TLS) survey was carried out in 2011 and some analyses were performed on the resulting point cloud to provide the following: bell tower leaning angle, wall inclination/tapering and radius, local deviation from circular shape, and local curvature. Emphasis was placed on the changes of these quantities with elevation. In order to perform these analyses, a MATLAB/Octave toolbox was developed and is available as supplementary material of this paper. In this way, a reliable picture of the current geometry of the bell tower was obtained. In particular, a correlation between leaning angle (average value 1.4 degrees towards East-South-East) and some surface deformations and damage (bulges, brick displacements or also material loss) was found. These results are useful for cultural heritage preservation purposes |
Appears in Collections: | Article published / in press |
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JoCH_proof_caorle(CULHER_2684).pdf | 3.08 MB | Adobe PDF |
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