Although CityGML can be used to model building interiors, it isn’t sufficient to meet all the requirements of indoor navigation. To fill this gap, OGC membership recently formed a Standards Working Group to develop a new standard, IndoorGML.
From the perspective of IndoorGML, IFCs and CityGML can be considered as important data sources for the interior topography of buildings (and other structures such as tunnels).
IndoorGML will provide the essential model and data for important applications such as building evacuation, disaster management, personal indoor navigation, indoor robot navigation, indoor spatial awareness, indoor location-based services, and the tracking of people and goods. IndoorGML will support different travel modes, such as walking, driving and flying.
IndoorGML provides a framework for the flexible integration of different localization technologies (e.g., WiFi, RFID, LIDAR, etc.) and allows the ad-hoc selection of appropriate navigation data according to the capabilities of the mobile device and the offered localization technologies of a building.
Standards for bridging the indoor/outdoor location divide are on the critical path to navigation, machine-to-machine communication, smart grids, smart cities, smart buildings, smart pipes, sensor webs, BIM, location marketing and other exciting new domains of economic activity. Success in all these domains depends on the widespread and active collaboration of many different standards-development organizations. If your organization has a stake in these, we encourage you to become involved.