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In this paper, we present a new technique for 3D shape
morphing using strain fields. Strain is an important geometric
quantity used in mechanics to describe the deformation
extent of objects. We use it to analyze and control deformation
in morphing. Using the position vector field, the strain
field between source and target shapes can be obtain. This
strain field is then interpolated between zero and its final
value to give the position field for intermediate shapes. This
method ensures that the 3D morphing process is smooth and
no shape jittering or wobbling happens, and that locally,
volumes suffer minimal distortion. We also show how to
modify the method so that changes of shape (in particular,
lengths) vary linearly with time. |
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Keywords:Morphing, Strain, Interpolation |
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