Eurographics Workshop on Urban Data Modelling and Visualisation 2015
pp. 25 - 30
Automatic Semantic-preserving Conversion Between OBJ and CityGML
Author(s):
Filip Biljecki and Ken Arroyo Ohori
DOI:
10.2312/udmv.20151345
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.
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Categories and Subject Descriptors (according to ACM CCS): I.3.6 [Computer Graphics]: Methodology and Techniques-Graphics data structures and data types
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