A geometric idea to solve the eikonal equation

  • Authors:
  • Martin Peternell;Tibor Steiner

  • Affiliations:
  • Vienna University of Technology;Vienna University of Technology

  • Venue:
  • Proceedings of the 21st spring conference on Computer graphics
  • Year:
  • 2005

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Abstract

Given a closed plane curve c(t) = (c1,c2) (t) ∈ &egr; R2 and associated function values g(t) we present a geometric idea and an algorithm to solve the equation ||∇f|| = a = const. with respect to the boundary values g(t) along the boundary c(t). This is equivalent to finding a developable surface D of constant slope a = tan α through the spatial curve C determined by (c1, c2, g) (t). The presented method constructs level curves of the surface D. We put some emphasis on the treatment of the singularities of the solution which are D's self intersections.