Electronics & Information Technology |
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GFFD: Generalized free-form deformation with scalar fields |
QIN Xu-jia, HUA Wei, FANG Xiang, BAO Hu-jun, PENG Qun-sheng |
State Key Lab. of CAD & CG, Zhejiang University, Hangzhou 310027, China |
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Abstract The novel free-form deformation (FFD) technique presented in the paper uses scalar fields defined by skeletons with arbitrary topology. The technique embeds objects into the scalar field by assigning a field value to each point of the objects. When the space of the skeleton is changed, the distribution of the scalar field changes accordingly, which implicitly defines a deformation of the space. The generality of skeletons assures that the technique can freely define deformable regions to produce a broader range of shape deformations.
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Received: 15 September 2002
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