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math.NA2020

Mean curvature motion of point cloud varifolds

Blanche Buet, Martin Rumpf

This paper investigates a discretization scheme for mean curvature motion on point cloud varifolds with particular emphasis on singular evolutions. To define the varifold a local c…

math.NA2020

On Material Optimisation for Nonlinearly Elastic Plates and Shells

Peter Hornung, Martin Rumpf, Stefan Simon

This paper investigates the optimal distribution of hard and soft material on elastic plates. In the class of isometric deformations stationary points of a Kirchhoff plate function…

math.NA2019

Consistent Curvature Approximation on Riemannian Shape Spaces

Alexander Effland, Behrend Heeren, Martin Rumpf +1

We describe how to approximate the Riemann curvature tensor as well as sectional curvatures on possibly infinite-dimensional shape spaces that can be thought of as Riemannian manif…

math.NA2019

Image Morphing in Deep Feature Spaces: Theory and Applications

Alexander Effland, Erich Kobler, Thomas Pock +2

This paper combines image metamorphosis with deep features. To this end, images are considered as maps into a high-dimensional feature space and a structure-sensitive, anisotropic…

math.NA2019

Geometric optimization using nonlinear rotation-invariant coordinates

Josua Sassen, Behrend Heeren, Klaus Hildebrandt +1

Geometric optimization problems are at the core of many applications in geometry processing. The choice of a representation fitting an optimization problem can considerably simplif…