International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004 
  
6 CONCLUSIONS 
We have presented a number of issues we think are impor- 
tant to make automated object extraction a part of DPW. 
These are naturally the models and strategies of the auto- 
mated processes. To improve them, a thorough testing is 
needed, promoting also competition between approaches, 
making clear what way should be taken. Most importantly, 
though, one should start, or at least start to think about how, 
to integrate the semi-automated systems into DPW to build 
efficient systems for practice. Finally, we have shown that 
automated object extraction offers new possibilities such 
as highly-detailed 3D models in cities including new ob- 
jects such as vegetation, which can be animated, e.g., by 
wind. 
ACKNOWLEDGMENTS 
We want to thank Christian Heipke for giving us the pos- 
sibility, but also for pushing us to talk about the issues in 
this paper. We are grateful to Christian Heipke and Uwe 
Bacher for proofreading. 
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