Efficient Computation of a Hierarchy of Discrete 3D Gradient Vector Fields

  • David Günther
  • Jan Reininghaus
  • Steffen Prohaska
  • Tino Weinkauf
  • Hans-Christian Hege
Chapter
Part of the Mathematics and Visualization book series (MATHVISUAL)

Abstract

This paper introduces a novel combinatorial algorithm to compute a hierarchy of discrete gradient vector fields for three-dimensional scalar fields. The hierarchy is defined by an importance measure and represents the combinatorial gradient flow at different levels of detail. The presented algorithm is based on Forman’s discrete Morse theory, which guarantees topological consistency and algorithmic robustness. In contrast to previous work, our algorithm combines memory and runtime efficiency. It thereby lends itself to the analysis of large data sets. A discrete gradient vector field is also a compact representation of the underlying extremal structures – the critical points, separation lines and surfaces. Given a certain level of detail, an explicit geometric representation of these structures can be extracted using simple and fast graph algorithms.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • David Günther
    • 1
  • Jan Reininghaus
    • 1
  • Steffen Prohaska
    • 1
  • Tino Weinkauf
    • 2
  • Hans-Christian Hege
    • 1
  1. 1.Zuse Institute BerlinBerlinGermany
  2. 2.Courant Institute of Mathematical SciencesNew York UniversityNew YorkUSA

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