5. CONCLUSION
We have systematically formulated a semi-automatic solution
of inner-building communication data extraction for emergency
evacuation simulation. And this solution takes proper usage of
spatial relationships and geometric features of artificial
buildings. The experiment shows the solution is workable for
large building group communication data extraction from
existing 3D data files, i.e. in Sketch-up format.
Nevertheless, our solution could be greatly improved from two
directions. First, although we have divided a complex building
into several minor parts to relieve the computational burden for
computers, the spatial dividing product of the buildings is not
very good. Therefore, a better dividing evaluation system for
complex buildings should be developed. Second, the proposed
solution uses multithread method to finish the extraction task,
but the parallel-computing concept is not implemented in the
extraction operation in each building part. This results in a
waste of multi-core CPU computing resources. In the next step,
we should implement the multithread mechanism in the lower
level extraction process such as building part level.
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Lee, J. and S. Zlatanova (2008). "A 3D data model and
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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B4, 2012
XXII ISPRS Congress, 25 August — 01 September 2012, Melbourne, Australia
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