Integration of building models with information-based attributes

Recently, 3Dbuilding model has become a new research focus for its diversified functionalities and applications. In geoinformatics, the level of detail (LOD) of the city model is well-defined by the Open Geospatial Consortium (OGC). Textures and shapes of the buildings shall correspond to vary with the zoom level defines. However, if the system requires very detailed information on objects and attributes, such as individual beam, structure and properties, current OGC specification may be inadequate. On the other hand, Building Information Modeling (BIM) is an object-orientated approach for producing independent objects within a model structure. This helps engineers and designers visualize and manage spatial applications more easily. In other words, there are two approaches in model construction, namely top-down approach in geoinfoematics and button-up method in BIM. This study aims to integrate geomatic approach with the BIM for 3D building and city modeling during the life cycle of the buildings in real world. The concept to construct such models is to build individual structure with spatial attributes and to form a complete building model. This model not only provides the users with 3D visualization but also spatial information for further applications within a building.