Spatial ontologies for architectural heritage

Informatics and artificial intelligence have generated new requirements for digital archiving, information, and documentation. Semantic interoperability has become fundamental for the management and sharing of information. The constraints to data interpretation enable both database interoperability, for data and schemas sharing and reuse, and information retrieval in large datasets. Another challenging issue is the exploitation of automated reasoning possibilities. The solution is the use of domain ontologies as a reference for data modelling in information systems. The architectural heritage (AH) domain is considered in this thesis. The documentation in this field, particularly complex and multifaceted, is well-known to be critical for the preservation, knowledge, and promotion of the monuments. For these reasons, digital inventories, also exploiting standards and new semantic technologies, are developed by international organisations (Getty Institute, ONU, European Union). Geometric and geographic information is essential part of a monument. It is composed by a number of aspects (spatial, topological, and mereological relations; accuracy; multi-scale representation; time; etc.). Currently, geomatics permits the obtaining of very accurate and dense 3D models (possibly enriched with textures) and derived products, in both raster and vector format. Many standards were published for the geographic field or in the cultural heritage domain. However, the first ones are limited in the foreseen representation scales (the maximum is achieved by OGC CityGML), and the semantic values do not consider the full semantic richness of AH. The second ones (especially the core ontology CIDOC – CRM, the Conceptual Reference Model of the Documentation Commettee of the International Council of Museums) were employed to document museums’ objects. Even if it was recently extended to standing buildings and a spatial extension was included, the integration of complex 3D models has not yet been achieved. In this thesis, the aspects (especially spatial issues) to consider in the documentation of monuments are analysed. In the light of them, the OGC CityGML is extended for the management of AH complexity. An approach ‘from the landscape to the detail’ is used, for considering the monument in a wider system, which is essential for analysis and reasoning about such complex objects. An implementation test is conducted on a case study, preferring open source applications

Spatial ontologies for architectural heritage

Informatics and artificial intelligence have generated new requirements for digital archiving, information, and documentation. Semantic interoperability has become fundamental for the management and sharing of information. The constraints to data interpretation enable both database interoperability, for data and schemas sharing and reuse, and information retrieval in large datasets. Another challenging issue is the exploitation of automated reasoning possibilities. The solution is the use of domain ontologies as a reference for data modelling in information systems. The architectural heritage (AH) domain is considered in this thesis. The documentation in this field, particularly complex and multifaceted, is well-known to be critical for the preservation, knowledge, and promotion of the monuments. For these reasons, digital inventories, also exploiting standards and new semantic technologies, are developed by international organisations (Getty Institute, ONU, European Union). Geometric and geographic information is essential part of a monument. It is composed by a number of aspects (spatial, topological, and mereological relations; accuracy; multi-scale representation; time; etc.). Currently, geomatics permits the obtaining of very accurate and dense 3D models (possibly enriched with textures) and derived products, in both raster and vector format. Many standards were published for the geographic field or in the cultural heritage domain. However, the first ones are limited in the foreseen representation scales (the maximum is achieved by OGC CityGML), and the semantic values do not consider the full semantic richness of AH. The second ones (especially the core ontology CIDOC – CRM, the Conceptual Reference Model of the Documentation Commettee of the International Council of Museums) were employed to document museums’ objects. Even if it was recently extended to standing buildings and a spatial extension was included, the integration of complex 3D models has not yet been achieved. In this thesis, the aspects (especially spatial issues) to consider in the documentation of monuments are analysed. In the light of them, the OGC CityGML is extended for the management of AH complexity. An approach ‘from the landscape to the detail’ is used, for considering the monument in a wider system, which is essential for analysis and reasoning about such complex objects. An implementation test is conducted on a case study, preferring open source applications

The use of ICT to support urban heritage appraisal : the case of medieval Tripoli, Lebanon

Conservation officers are faced with many problems when dealing with applications for intervention in urban heritage areas. The process involves reviewing different categories of heritage resources and legislation; understanding and relating together different heritage values; applying different kinds and levels of analysis; contacting the various stakeholders and accessing diverse digital and paper based documents. Such processes are largely tedious, time consuming and are generally inefficient (Morton, 1996a; Angelides, 2000). Despite the intention of many heritage organizations to identify models that can be used for managing decision-making in urban heritage areas, as yet no information model exists that is capable of properly and dynamically appraising such areas. The lack of such a model has exacerbated the difficulties and conflict in the selection and assessment of alternative intervention strategies in urban heritage areas. The diverse range of heritage categories, values, stakeholders and types of data related to the conservation of urban heritage resources provide a challenge in developing an adequate information model for informing the management of intervention. ICT based on a combination of Geographical information system (GIS), surveying, visualization and database packages can help in urban heritage appraisal process. However, efforts to apply the recently developed ICT to urban heritage recording and appraising have not yet fully come to fruition (Ford et al, 1999). Generally, efforts have only been concentrated on the use of ICT as a records database, (Sahib, 1993) rather than making more use of their analytical capabilities. This study develops a theoretical framework to help the full understanding of the categories of urban heritage resources, values and the identification of the constraints for using ICT in the urban heritage appraisal process. The aim is to develop a decision support system for intervention in Lebanese urban conservation areas. The effects of war, negligence and conservation plans have been the main factors causing destruction of the urban heritage in Lebanon. Appraisal is a necessary step to define the major components which contribute to the character of urban heritage. It is a first step towards the future development of heritage policies with regard to heritage management, conservation and enhancement (English Heritage, 1997a-b). This study creates, according to a developed theoretical framework, a prototype model for the appraisal of urban heritage areas. The study takes the medieval centre of the city of Tripoli as a case study. This centre is the unique sole depository of Mamluk art and architectural treasures in Lebanon.EThOS - Electronic Theses Online ServiceGBUnited Kingdo