Zobrazeno 1 - 10
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pro vyhledávání: '"LEVIN, DAVID"'
We introduce a novel adaptive eigenvalue filtering strategy to stabilize and accelerate the optimization of Neo-Hookean energy and its variants under the Projected Newton framework. For the first time, we show that Newton's method, Projected Newton w
Externí odkaz:
http://arxiv.org/abs/2410.10102
Autor:
Levin, David
Publikováno v:
Advances in Quantum Chemistry. Vol. 68. Academic Press, 2014. 19-42
Given function values on a domain $D_0$, possibly with noise, we examine the possibility of extending the function to a larger domain $D$, $D_0\subset D$. In addition to smoothness at the boundary of $D_0$, the extension on $D\setminus D_0$ should al
Externí odkaz:
http://arxiv.org/abs/2410.09423
We present an elastic simulator for domains defined as evolving implicit functions, which is efficient, robust, and differentiable with respect to both shape and material. This simulator is motivated by applications in 3D reconstruction: it is increa
Externí odkaz:
http://arxiv.org/abs/2410.09417
Autor:
Madan, Abhishek, Levin, David I. W.
We present a general method for computing local parameterizations rooted at a point on a surface, where the surface is described only through a signed implicit function and a corresponding projection function. Using a two-stage process, we compute se
Externí odkaz:
http://arxiv.org/abs/2410.06330
We present a novel, physically-based morphing technique for elastic shapes, leveraging the differentiable material point method (MPM) with space-time control through per-particle deformation gradients to accommodate complex topology changes. This app
Externí odkaz:
http://arxiv.org/abs/2409.15746
Autor:
Song, Hongcheng, Kachkovski, Dimitry, Monem, Shaimaa, Negash, Abraham Kassauhun, Levin, David I. W.
In this work, we show that exploiting additional variables in a mixed finite element formulation of deformation leads to an efficient physics-based character skinning algorithm. Taking as input, a user-defined rig, we show how to efficiently compute
Externí odkaz:
http://arxiv.org/abs/2408.04066
The proliferation of 3D representations, from explicit meshes to implicit neural fields and more, motivates the need for simulators agnostic to representation. We present a data-, mesh-, and grid-free solution for elastic simulation for any object in
Externí odkaz:
http://arxiv.org/abs/2407.09497
Volume-preserving hyperelastic materials are widely used to model near-incompressible materials such as rubber and soft tissues. However, the numerical simulation of volume-preserving hyperelastic materials is notoriously challenging within this regi
Externí odkaz:
http://arxiv.org/abs/2406.05928
We propose a reduced space mixed finite element method (MFEM) built on a Skinning Eigenmode subspace and material-aware cubature scheme. Our solver is well-suited for simulating scenes with large material and geometric heterogeneities in real-time. T
Externí odkaz:
http://arxiv.org/abs/2405.13730
Autor:
Levin, David
This paper demonstrates that the space of piecewise smooth functions can be well approximated by the space of functions defined by a set of simple (non-linear) operations on smooth uniform splines. The examples include bivariate functions with jump d
Externí odkaz:
http://arxiv.org/abs/2405.06462