Spatial deformation transfer
Spatial deformation transfer
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DOI：
10.1145/1599470.1599479
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发表时间：
2009-08
期刊：
影响因子：
--
通讯作者：
M. Ben-Chen;O. Weber;C. Gotsman
中科院分区：
文献类型：
--
作者：
M. Ben-Chen;O. Weber;C. Gotsman
在生成三维形状的自然变形方面投入了大量精力。变形传递通过允许从现有的类似形状的变形中推断出新形状的变形，从而简化了这一过程。目前的变形传递方法只能应用于以单组件流形网格表示的形状，因此它们对现实三维模型的适用性有些限制。我们提出了一种新的变形传递方法，该方法可以应用于各种形状表示- et-mesh，多边形汤和多分量网格。我们的关键技术是对嵌入形状的空间进行变形。我们用一组调和基函数用调和映射近似给定的源变形。然后，给定用户选择的源形状和目标形状之间对应点的稀疏集，我们生成目标形状的变形，该变形具有与源变形相似的微分特性。我们的方法只需要求解线性方程组，因此是非常健壮和有效的。我们证明了它适用于广泛的变形，不同的形状表示。
Much effort is invested in generating natural deformations of three-dimensional shapes. Deformation transfer simplifies this process by allowing to infer deformations of a new shape from existing deformations of a similar shape. Current deformation transfer methods can be applied only to shapes which are represented as a single component manifold mesh, hence their applicability to real-life 3D models is somewhat limited. We propose a novel deformation transfer method, which can be applied to a variety of shape representations -- tet-meshes, polygon soups and multiple-component meshes. Our key technique is deformation of the space in which the shape is embedded. We approximate the given source deformation by a harmonic map using a set of harmonic basis functions. Then, given a sparse set of user-selected correspondence points between the source and target shapes, we generate a deformation of the target shape which has differential properties similar to those of the source deformation. Our method requires only the solution of linear systems of equations, and hence is very robust and efficient. We demonstrate its applicability on a wide range of deformations, for different shape representations.