Conservation process model (cpm). A twofold scientific research scope in the information modelling for cultural heritage

The aim of the present research is to develop an instrument able to adequately support the conservation process by means of a twofold approach, based on both BIM environment and ontology formalisation. Although BIM has been successfully experimented within AEC (Architecture Engineering Construction) field, it has showed many drawbacks for architectural heritage. To cope with unicity and more generally complexity of ancient buildings, applications so far developed have shown to poorly adapt BIM to conservation design with unsatisfactory results (Dore, Murphy 2013; Carrara 2014). In order to combine achievements reached within AEC through BIM environment (design control and management) with an appropriate, semantically enriched and flexible The presented model has at its core a knowledge base developed through information ontologies and oriented around the formalization and computability of all the knowledge necessary for the full comprehension of the object of architectural heritage an its conservation. Such a knowledge representation is worked out upon conceptual categories defined above all within architectural criticism and conservation scope. The present paper aims at further extending the scope of conceptual modelling within cultural heritage conservation already formalized by the model. A special focus is directed on decay analysis and surfaces conservation project

Digital Segusio: from models generation to urban reconstruction

[EN] The reconstructive study of the urban arrangement of Susa in the 4th century arose from the intention to exploit some resources derived from local studies, and survey activities, fulfilled by innovative methods from which the modelling of architectural heritage (AH) and virtual reconstructions are derived. The digital Segusio presented in this paper is the result of intensive discussion and exchange of data and information during the urban landscape documentation activities, and due to the technology of virtual model generation, making it possible to recreate the charm of an ancient landscape. The land survey has been accomplished using aerial and terrestrial acquisition systems, mainly through digital photogrammetry from UAV (Unmanned Aerial Vehicle) and terrestrial laser scanning. Results obtained from both the methods have been integrated into the medium scale geographical data from the regional map repository, and some processing and visualization supported by GIS (Geographical Information System) has been achieved. Subsequently, with the help of accurate and detailed DEM (Digital Elevation Model) and other architectural scale models related to the ancient heritage, this ancient landscape was modelled. The integration of the history of this city with digital and multimedia resources will be offered to the public in the city museum housed in the restored castle of Maria Adelaide (Savoy dynasty, 11th century), which stands in the place where the acropolis of the city of Susa lay in ancient times.A special acknowledgment goes to the Foundation Cassa di Risparmio di Torino, who made the realization of this work possible (through a loan granted under the "Exponent Project 2015"). The city of Susa and the architect Maria Pia Dal Bianco (castle restoration and setting up of the Civic Museum designer), who participated actively in the initiative's success. The DIRECT team (working in the field of advanced technologies, 3D Metric survey, for the on going education of students from the areas of Architecture and Engineering in relation to the promotion and protection of the territory and built heritage) participated in the survey campaign and data processing in 2013, and above all Elisabetta Donadio. We would also like to thank Dr. Enrico Maggi –PhD in Arch.– who has deepened the study and the graphic representation of the walls of Segusio.Spanò, A.; Chiabrando, F.; Dezzani, L.; Prencipe, A. (2016). Digital Segusio: from models generation to urban reconstruction. Virtual Archaeology Review. 7(15):87-97. https://doi.org/10.4995/var.2016.5874SWORD879771

THE VALUE OF KNOWLEDGE THROUGH H-BIM MODELS: HISTORIC DOCUMENTATION WITH A SEMANTIC APPROACH

Abstract. The Building Information Modeling (BIM) in the Architectural Heritage field is constantly proving to be a fertile ground for the experimentation of innovative systems for the enhancement and management of cultural heritage. Regarding to the management of the entire process, the building field is increasing in efficiency from the construction to the management phase; conversely, the approach to historical buildings opens up interesting and heterogeneous scenarios, according to different levels of complexity. The presented work is the result of a collaboration between the Politecnico di Torino and the Escuela Técnica Superior de Arquitectura of Granada: the main scope was to create an historic building information model (H-BIM) of the building that today hosts the Faculty of Architecture (ETSAG), taking into account its historical past from the sixteenth century up to the present day, as the result of many modifications, extensions and different use classifications over time. According to this, the BIM methodology can be considered as a bridge between the archive documentation and the digital model, proving to be an effective tool as a data repository, semantically oriented, not only constituted by geometry, but also by alpha-numerical attributes, improving in effectiveness if it is directly related to formal language object oriented.</p

Architectural heritage ontology concepts and some practical issues

Interoperability has become fundamental to the management and sharing of the data. For this reason, international standards are published and ontologies are proposed and used for structuring databases in order to assure information retrieval, improved analysis and correct interpretation of the data, besides the interoperability of compliant databases. For thematic data about cultural heritage, standards vocabularies and ontologies exits, but are not fully suitable to represent some aspects of architectural heritage. In fact, complex spatial data have to be equally managed using these technologies, for enabling analysis empowered by the inclusion of the spatial and geographical dimension. This could undoubtedly enrich the documentation of architectural heritage. However, few spatial ontologies exist, which are able to correctly represent the complexity and richness of such data. In the paper, an existing ontological model for cartographic urban themes, OGC CityGML, is extended, in order to propose a data schema for the management of architectural heritage multi-scale, multi-temporal and articulated data. The extended parts of the model are explained in the paper. Moreover, some implementation aspects are considered both for the definition of the ontological schema extension and for the management of the data using i