IFC-CityGML LOD Mapping Automation based on Multi- Processing

Over the last few years, to increase the competitiveness of domestic construction industries, the governments of US, UK, Japan, and other developed countries have introduced Building Information Modeling (BIM) as part of their support policy; as a result, BIM information is increasing rapidly. In this regard, the need for studies on integrating or mapping BIM object information to Geographic Information Systems (GIS) is increasing. These studies have been conducted with the purpose of utilizing the advantages of BIM and GIS; however, many difficulties are encountered in model integration and mapping because of the different schema structures of such studies. In this study, the productivity of the mapping work is improved by developing a method that automates the Level of Detail (LOD) mapping using BIM and GIS standard models, Screen Buffer Scanning-based multiprocessing, Industry Foundation Classes (IFC) model, and the CityGML model. The proposed method can dramatically improve the productivity of LOD shape modeling work because, unlike conventional methods, the proposed method uses multiprocessing. Finally, the developed results are quantitatively evaluated and future study directions