Figure 5.2: Conversion from ESRI PolygonZ shape file to CityGML data model 
2. Conversion from ESRI PolygonZ Shape file to CityGML 
data model which is the main conversion task of the thesis 
work. Also the convertion is divided into three parts which 
are called bookmark in FME (Fig.5.2), 
a. Building bookmark which includes general 
information about buildings and necessary attributes 
in order to have correct CityGML dataset. 
b. Boundry Surface bookmark which includes the 
buildings surface informations, necessary attributes as 
well as extra attribute such as roof height. 
c. Building Installations bookmark which includes the 
building installation necessary attributes in order to 
open properly in the CityGML data model. 
Each Transformer needs necessary input data and should be in 
the right position in the FME workbench. Finally, the 
conversion has reached the destination data as CityGML, which 
is XML based format. 
6. CONCLUSION 
To sum up, the gap between photogrammetric methods and 
CityGML has been filled with a FME Workbench. Furthermore, 
the building model of photogrammetric methods has been 
created and also the building model of CityGML is minimized 
from the specification document depending on the requirements 
of the thesis work.. Also those building data models are 
compared with CityGML building model. The differences and 
similarities of those models have also defined and also they 
mapped eachother with using UML diagram. 
7. REFERENCES 
Kolbe, T. H., Gróger, G., Plümer, L. (2005), CityGML - 
Interoperable Access to 3D City Models. Proceedings of the 
first International Symposium on Geo-Information for Disaster 
Management, Springer Verlag. 
Zlatanova, S., Paintsil, J. and Tempfli, K., 1998: 3D object 
reconstruction from aerial stereo images. In: WSCG '98, 6th 
international conference in Central Europe on computer 
graphics and visualization: February 9-13, 1998, Plzen-Bory, 
Czech Republic 
Gróger, G., Kolbe, T.H., Czerwinski, A., Nagel, C., 2008. 
OpenGIS City Geography Markup Language (CityGML) 
Encoding Standard, Version 1.0.0, OGC Doc. No. 08-007rl, 
Open Geospatial Consortium 
Kolbe, T.H, 2009, Representing and Exchanging 3D City 
Models with CityGML, 3D Geo-Information Sciences, ISBN: 
978-3-540-87395-2, pp. 15-31 
John Vincent Carlis, Joseph D. Maguire ,2001. Mastering 
Data Modeling: A User-driven Approach. 
  
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