3D Volume Metamorphosis Algorithms
Why 3D?
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In 3D morphing, creating the morphs is independent of the viewing and lighting
parameters. In 2D morphing, a new morph must be recomputed every time we
wish to alter our viewpoint or the illumination of the 3D model.
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2D techniques, lacking information on the model's spatial configuration,
are unable to correctly handle changes in illumination and visibility.
Methods for 3-D Morphing
According to the use of control datasets, approaches to volume morphing
can be classified into three categories, namely:
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Cross Dissolving
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Mesh Warping
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Field ( feature-based) Morphing
3D Feature-based Morphing
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Regular grids provide a cumbersome interface in 2D; in 3D they would likely
become unmanageable.
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As in the 2D morphing system, the animator identifies two corresponding
features in source volume and destination volume, by defining a pair
of elements.
Transformation between 2 elements
Examples
Some cool demos are created by studens of Stanford University. See
detail at their webpage.