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| Planning | Derived er — Total = 
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Table 3. Comparison of lengths of three segments (unit: mm) 
6. CONCLUSIONS 
We proposed a conceptual framework and the core processes 
for building reconstruction from images and points acquired by 
close range sensors. The core processes were then partially 
implemented and applied to real data sets to evaluate the 
proposed framework and processes. The evaluation results 
support the promising performance of the proposed processes in 
terms of the precision and accuracy of the derived building 
models. 
ACKNOWLEDGEMENTS 
This research was supported by The University of Seoul. We 
would like to thank Seokjae Sa, Euijong Oh, Changho Yu, 
Donghyun Kim and other members of the geodesy and 
photogrammetry group for acquiring and processing the data. 
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