Tools for BIM-GIS Integration (IFC Georeferencing and Conversions): Results from the GeoBIM Benchmark 2019

Abstract

The integration of 3D city models with Building Information Models (BIM), abbreviated as GeoBIM, facilitates improved data support to several applications, e.g. 3D map updates, building permits issuing, detailed city analysis, infrastructure design, context-based building design, to name a few. To solve the integration, several issues need to be tackled and solved, i.e. harmonization of features, interoperability, format conversions, integration of procedures. The GeoBIM benchmark 2019, funded by ISPRS and EuroSDR, evaluated the state of implementation of tools addressing some of those issues. In particular, in the part of the benchmark described in this paper, the application of georeferencing to Industry Foundation Classes (IFC) models and making consistent conversions between 3D city models and BIM are investigated, considering the OGC CityGML and buildingSMART IFC as reference standards. In the benchmark, sample datasets in the two reference standards were provided. External volunteers were asked to describe and test georeferencing procedures for IFC models and conversion tools between CityGML and IFC. From the analysis of the delivered answers and processed datasets, it was possible to notice that while there are tools and procedures available to support georeferencing and data conversion, comprehensive definition of the requirements, clear rules to perform such two tasks, as well as solid technological solutions implementing them, are still lacking in functionalities. Those specific issues can be a sensible starting point for planning the next GeoBIM integration agendas.

Multisource spatial data integration for use cases applications

“…Reaping the results from recent studies on the integration of geoinformation and BIM (GeoBIM) and past data integration theories and experiences (Arroyo Ohori et al, 2018; Biljecki & Tauscher, 2019; Ellul et al, 2020; Kavouras & Kokla, 2007; Kumar et al, 2019; Laurini, 1998; Laurini & Thompson, 1992; Noardo et al, 2016; Noardo, Ellul, et al, 2020; Noardo, Harrie, et al, 2020; Ulubay & Altan, 2002; Worboys & Duckham, 2004), the complex issue of spatial data integration is analyzed in its components and a reference workflow is proposed.…”

“…3—conversion) In this case, the geometries must be converted into a different representation, as defined by data requirements, for example, by means of Extract‐Transform‐and‐Load (ETL) tools (Noardo, Harrie, et al, 2020).…”

LOSS OF INFORMATION DURING DESIGN & CONSTRUCTION FOR HIGHWAYS ASSET MANAGEMENT: A GEOBIM PERSPECTIVE

“…With regards to geometry, the major challenges involve the conversion of curved surfaces, missing geometric features and poorly geolocated geometries due to the use of local coordinate systems (Biljecki and Tauscher, 2019;Noardo et al, 2019). The "GeoBIM benchmark 2019" (Noardo et al, 2019) investigates the conversion from IFC to 3DGIS, using a variety of 3D models (Noardo et al, 2019) which represent different types of buildings.…”

“…Secondly, depending on the size and elements of the model, it can be performance intensive. Additionally, it is heavily dependent on the semantic enrichment of the data source which leads to the requirement of recreating parts of the process to suit the needs of models with different structure ( Noardo et al, 2019;Liu et al, 2017;Floros et al, 2020). The British Set of Standards PAS 1192 series, specifies the Information Models to be developed during the lifecycle, starting with the Project Information Model (PIM), which consists of Graphical Information, Non-Graphical Information and Documentation and eventually evolves to the Asset Information Model (AIM) post-handover, which is used by the organisation to operate and maintain its assets (PAS 1192-3, 2013).…”

BIM and 3D GIS Integration for Real Estate Valuation

“…Over the last few years, a number of studies have been conducted to examine the potential for the integration of GIS and BIM (GeoBIM) through the standardization of exchanges between IFC and CityGML. However, the technical issues inherent to the management of interoperability between the two schemas are far from being mastered and still mobilize several research groups such as the EuroSDR GeoBIM working group (Noardo et al 2020).…”