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Robust Biharmonic Skinning Using Geometric Fields

delete2026-04-01
delete1
PRE
AI
A
Ana Dodik *
V
Vincent Sitzmann
J
Justin Solomon
O
Oded Stein
DOI:10.1145/3771928delete
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摘要

摘要

En 中文
Bounded bihramonic weights are a popular tool used to rig and deform characters for animation, to compute reduced-order simulations, and to define feature descriptors for geometry processing. They necessitate tetrahedralizing the volume bounded by the surface, introducing the possibility of meshing artifacts or tetrahedralization failure. We introduce a mesh-free and robust automatic skinning technique that generates weights comparable to the current state of the art, but works reliably even on open surfaces, triangle soups, and point clouds where current methods fail. We achieve this through the use of a specialized Lagrangian representation enabled by the advent of hardware ray-tracing, which circumvents the need for finite elements while optimizing the biharmonic energy and enforcing boundary conditions. The flexibility of our formulation allows us to integrate artistic control through weight painting during the optimization. We offer a thorough qualitative and quantitative evaluation of our method.
Keyword:
Skinning weights
bounded biharmonic weights
geometry processing
deformation
partial differential equations
variational problems

期刊

ACM Transactions on Graphics 封面图
ACM Transactions on Graphics
IF:
9.5
论文数:
4.7K
被引数:
3.6W

机构

M
massachusetts institute of technology (mit)
学者数:
1.4K
论文数: 622
被引数: 0
U
university of southern california
学者数:
4.7W
论文数: 3.8W
被引数: 51
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