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Abstract:
In this report, a new free-form shape deformation approach is proposed.
We combine a skeleton-driven mesh deformation technique with discrete
differential coordinates in order to create natural-looking global shape
deformations. Given a triangle mesh, we first extract a skeletal mesh, a
two-sided
Voronoi-based approximation of the medial axis. Next the skeletal mesh
is modified by free-form deformations. Then a desired global shape
deformation is obtained by reconstructing the shape corresponding to the
deformed skeletal mesh. The reconstruction is based on using discrete
differential coordinates.
Our method preserves fine geometric details and original shape
thickness because of using discrete differential coordinates and
skeleton-driven deformations. We also develop a new mesh evolution
technique which allow us to eliminate possible global and local
self-intersections of the deformed mesh while preserving fine geometric
details. Finally, we present a multiresolution version of our approach
in order to simplify and accelerate the deformation process.
