Revising Surveying and Representation Package of LADM Profile for Serbia to Support 3D Spatial Information

Abstract

LADM profile for Serbia was developed by Radulović et al. (2017) reflecting the current state of Serbian cadastral information system which is based on 2D spatial information. It also provides general discussion of the need for establishing 3D cadastre in Serbia without specific details about its possible implementations and developments. Given the increasing usage of 3D datasets acquisitions in Serbia in recent years, particularly by LiDAR technology, in this paper we revise the surveying and representation package of Serbian LADM profile in the context of 3D spatial information and the process of retrieving 3D geometries of spatial units. With the proliferation of 3D datasets special attention should be paid to spatial sources such as LiDAR (airborne and terrestrial) and UAVs for buildings and BIM/IFC for building units, while formats for representation such as CityGML, CityDB, IndoorGML, BIM/IFC, etc. should also be addressed. Similar to 2D digital cadastral map supported by sketches of indoor information, we propose 3D digital cadastral map supported by indoor information represented by 3D formats (BIM/IFC, CityGML, IndoorGML). The link will be established by the means of unique property identification number. This approach will be demonstrated on two case studies. The first case study uses the procedure to obtain 3D city database developed based on airborne LIDAR data for the city of Novi Sad. The second case study uses the procedure to obtain 3D city database developed based on UAV data and terrestrial LiDAR for the city of Novi Pazar. For both case studies, different type of manual and automatic points cloud classification and 2D and 3D vectorization was done.