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8 CONCLUSIONS AND FUTURE
WORK
We have shown an approach for reconstructing a
3D model existing of curves from multiple but few
sketches. Only little user interaction is needed and
takes place in a pre- and post-processing step. In
the automated reconstruction process, we assume that
parts of an object, which should be reconstructed, are
present in at least two views with the same level of de-
tail. The sketches used, are perspective and show the
object from different not predetermined viewpoints.
Here the chosen voxel-based approach allows us to
handle perspective imprecision of the sketches to a
certain degree.With such features this method could
be part of a system to evaluate first styling concepts.
However we want to do more evaluations of the
system with regard to user effort and robustness. A
further object of special attention is handling silhou-
ette lines. Silhouettes in sketches convey important
shape information. However the handling is difficult,
because they are varying from view to view. Another
focus of our future work is to utilize robust vector-
ization approaches like (Hilaire and Tombre, 2006)
so we can use sketches containing more complex-to-
handle content such as shading.
ACKNOWLEDGEMENTS
We want to thank the reviewers for helpful advises
and corrections. For the implementation of this work
we used the Open Source Libraries OpenCV, QGar
and OpenSG. This work is partially supported by the
European projects 3D-COFORM (FP7-ICT-2007.4.3-
231809) and FOCUS K3D (FP7-ICT-2007-214993).
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