Currents and Finite Elements as Tools for Shape Space
Artikel i vetenskaplig tidskrift, 2019

The nonlinear spaces of shapes (unparameterized immersed curves or submanifolds) are of interest for many applications in image analysis, such as the identification of shapes that are similar modulo the action of some group. In this paper, we study a general representation of shapes as currents, which are based on linear spaces and are suitable for numerical discretization, being robust to noise. We develop the theory of currents for shape spaces by considering both the analytic and numerical aspects of the problem. In particular, we study the analytical properties of the current map and the H-s norm that it induces on shapes. We determine the conditions under which the current determines the shape. We then provide a finite element-based discretization of the currents that is a practical computational tool for shapes. Finally, we demonstrate this approach on a variety of examples.

Image analysis

Shape space

Finite elements



James Benn

Massey University

Stephen Marsland

Victoria University of Wellington

R. I. McLachlan

Massey University

Klas Modin

Chalmers, Matematiska vetenskaper, Tillämpad matematik och statistik

Olivier Verdier

Kungliga Tekniska Högskolan (KTH)

Høgskulen på Vestlandet (HVL)

Journal of Mathematical Imaging and Vision

0924-9907 (ISSN) 1573-7683 (eISSN)

Vol. 61 8 1197-1220




Datorseende och robotik (autonoma system)



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