Automatic Semantic-preserving Conversion Between OBJ and CityGML

Biljecki, Filip; Arroyo Ohori, Ken

Automatic Semantic-preserving Conversion Between OBJ and CityGML

Files

025-030.pdf (2.68 MB)

Date

2015

Authors

Biljecki, Filip
Arroyo Ohori, Ken

Publisher

The Eurographics Association

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.

        @inproceedings{10.2312:udmv.20151345
,
booktitle = {Eurographics Workshop on Urban Data Modelling and Visualisation
},
editor = {Filip Biljecki and Vincent Tourre
},
title = {{Automatic Semantic-preserving Conversion Between OBJ and CityGML
}},
author = {Biljecki, Filip and 
Arroyo Ohori, Ken
},
year = {2015
},
publisher = {The Eurographics Association
},
ISSN = {2307-8251
},
ISBN = {978-3-905674-80-4
},
DOI = {10.2312/udmv.20151345
}
}