Print Email Facebook Twitter Automatic Semantic-preserving Conversion Between OBJ and CityGML Title Automatic Semantic-preserving Conversion Between OBJ and CityGML Author Biljecki, F. Arroyo Ohori, K. Faculty Architecture and The Built Environment Department Urbanism Date 2015-11-23 Abstract We investigate the automatic conversion between two substantially different formats used in 3D city models: the ubiquitous but semantically poor Wavefront OBJ and the semantically rich but less used OGC standard CityGML. We elaborate on their differences and on the challenges involved in their conversion, such as the inference of semantics in an OBJ file for their use in CityGML, and the storage of these semantics back in OBJ. We implement two software prototypes: a conversion of 3D building models from CityGML to OBJ (CityGML2OBJs), and one from OBJ to CityGML (OBJ2CityGML). By presenting both methods and implementations, we aim at increasing the availability of CityGML datasets and the possibility to create them in powerful 3D modelling software. To reference this document use: http://resolver.tudelft.nl/uuid:0ef2b7e8-d394-4f39-a5e3-4bb55a313b73 Publisher Eurographics Source UDMV15: Eurographics Workshop on Urban Data Modelling and Visualisation, Delft, The Netherlands, 23 November 2015; Authors version Part of collection Institutional Repository Document type conference paper Rights (c) 2015 The Author(s) Files PDF Biljecki2015vk.pdf 2.65 MB Close viewer /islandora/object/uuid:0ef2b7e8-d394-4f39-a5e3-4bb55a313b73/datastream/OBJ/view