Abstract
Abstract. This paper illustrates how BIM integration with GIS is approached as part of the workflow in creating Virtual Historic Dublin. A design for a WEB based interactive 3D model of historic buildings and centres in Dublin City (Virtual Historic Dublin City) paralleling smart city initiates is now under construction and led by the National Monuments at the Office of Public Works in Ireland. The aim is to facilitate the conservation and maintenance of historic infrastructure and fabric and the dissemination of knowledge for education and cultural tourism using an extensive Historic Building Information Model. Remote sensing data is now processed with greater ease to create 3D intelligent models in Historic BIM. While the use of remote sensing, HBIM and game engine platforms are the main applications used at present, 3D GIS has potential to form part of the workflow for developing the Virtual Historic City. 2D GIS is now being replaced by 3D spatial data allowing more complex analysis to be carried out, 3D GIS can define and depict buildings, urban rural centres in relation to their geometry topological, semantic and visualisation properties. The addition of semantic attributes allows complex analysis and 3D spatial queries for modelling city and urban elements. This analysis includes fabric and structural elements of buildings, relief, vegetation, transportation, water bodies, city furniture and land use.
Highlights
As an attempt to digitally assemble connected tangible and intangible cultural heritage assets the Virtual Historic Centre is proposed as a dynamic digital repository and portal
With the exception of CityEngine, full 3D models, such as those created for city modelling, are first built-up in a CAD environment, have to be spatially referenced and imported into a Geographic Information Systems (GIS) package
This results in various issues, such as data inconsistency and data interoperability between CAD and GIS (Jedlička, 2015), including versioning issues; for example, the model in Sketchup 2018 had to be converted into an older version 6 before being imported into ArcGIS 10.6
Summary
As an attempt to digitally assemble connected tangible and intangible cultural heritage assets the Virtual Historic Centre is proposed as a dynamic digital repository and portal. By adding information and knowledge as semantic attributes to remotely sensed survey data, this moves digital objects from static representations to dynamic, interactive and ‘smart’ models. Historic Building Information Modelling (HBIM) and Heritage GIS can encompass the automated data capture used for information and knowledge extraction in addition to visualisation for cultural heritage centres
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