Print Email Facebook Twitter Design and development of a 3D cadastral prototype based on the LADM and 3D topology Title Design and development of a 3D cadastral prototype based on the LADM and 3D topology Author Ying, S. Guo, R. Li, L. Van Oosterom, P.J.M. Ledoux, H. Stoter, J.E. Faculty OTB Research Institute for the Built Environment Department OTB Research Date 2011-11-16 Abstract In this paper the design and development of a prototype 3D Cadastral system will be presented. The key aspects of this system are that the model is based on Land Administration Domain Model (LADM) and that the spatial profile is based on a full 3D topological structure. The prototype development starts with profiling the LADM (selecting relevant model classes and extending the model with attributes and classes where needed). The LADM supports various options for representing spatial units (parcels); e.g. a 2D parcel or a 3D volume. 2D parcel is well-known, however, how to create and maintain 3D valid parcels is still a challenge in practice. The 3D topology structure uses the well-known primitives node (0D), edge (1D), face (2D) to construct body (3D), which represent a spatial occupation of 3D parcel. Geometry is only explicitly stored at the nodes. A 3D Cadastre topology is realized using the API of Google SkecthUp. Details of geometric and topological aspects of the model are specified in the paper. 3D data (collection of faces) initially created by other tools or software can be loaded in prototype and then valid 3D solids /bodies of cadastral parcel volumes can be constructed and stored into the database. Of course, each 3D cadastral object and its intermediate neighbourhood can be retrieved from the database to be edited. During the editing, certain geometric changes need topological reconstruction before the updated data is loaded back into the database. Also other applications, non 3D-topology-aware, can connect to this database populated with 3D topologically structured parcel data; e.g. a 3D web-viewer, or a 3D analysis application like Skyline and Google Earth. The developed system is currently limited to represent closed solid/bodies. The purpose of this paper is to illustrate the feasibility a 3D topology based implementation of LADM by developing a prototype (tools), loading real world data and to implement construction of the 3D parcels. Subject 3D parceltopologysolid To reference this document use: http://resolver.tudelft.nl/uuid:3320544f-f6d8-4c07-8750-86d106419e5e Publisher International Federation of Surveyors (FIG), EuroSDR, TUDelft ISBN 978-98-90907-95-2 Source Proceedings 2nd International Workshop on 3D Cadastres, 16-18 November, 2011, Delft, The Netherlands Part of collection Institutional Repository Document type conference paper Rights (c) 2011 Ying, S.Guo, R.Li, L.Van Oosterom, P.J.M.Ledoux, H.Stoter, J.E. Files PDF 276330.pdf 1.24 MB Close viewer /islandora/object/uuid:3320544f-f6d8-4c07-8750-86d106419e5e/datastream/OBJ/view