3D Virtual reconstruction of an urban historical space: A consideration on the method

Galizia, Mariateresa and Santagati, Cettina (2011) 3D Virtual reconstruction of an urban historical space: A consideration on the method. ISPRS International Archives of Photogrammetry, Remote Sensing and Spatial and Information Sciences, 38 (5/w16). pp. 1-8. ISSN 1682-1777 [Article]


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Abstract (in English)

Urban historical spaces are often characterized by a variety of shapes, geometries, volumes, materials. Their virtual reconstruction requires a critical approach in terms of acquired data�s density, timing optimization, final product�s quality and slimness. The research team has focused its attention on the study on Francesco Neglia square (previously named Saint Thomas square) in Enna. This square is an urban space fronted by architectures which present historical and stylistic differences. For example you can find the Saint Thomas� church belfry (in aragounese-catalan stile dated XIV century) and the porch, the Anime Sante baroque�s church (XVII century), Saint Mary of the Grace�s nunnery (XVIII century) and as well as some civil buildings of minor importance built in the mid twentieth century. The research has compared two different modeling tools approaches: the first one is based on the construction of triangulated surfaces which are segmented and simplified; the second one is based on the detection of surfaces geometrical features, the extraction of the more significant profiles by using a software dedicated to the elaboration of cloud points and the subsequent mathematical reconstruction by using a 3d modelling software. The following step was aimed to process the virtual reconstruction of urban scene by assembling the single optimized models. This work highlighted the importance of the image of the operator and of its cultural contribution, essential to recognize geometries which generates surfaces in order to create high quality semantic models.

Item Type: Article
Galizia, Mariateresa
Santagati, Cettina
Languages: English
Keywords: laser scanning; 3d modeling; urban space
Subjects: C. ARCHITECTURE > 03. Styles of architecture
Name of monument, town, site, museum: Torre di San Tommaso, Enna, Italy; Chiesa delle Anime Sante, Enna, Italy
Volume: 38
Number: 5/w16
ISSN: 1682-1777
Depositing User: Eng Cettina Santagati
Date Deposited: 05 Apr 2012 19:37
Last Modified: 05 Apr 2012 19:37
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URI: https://openarchive.icomos.org/id/eprint/1065

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