Stability and instability in discrete tomography

  • Authors:
  • Andreas Alpers;Peter Gritzmann;Lionel Thorens

  • Affiliations:
  • Zentrum Mathematik, Technische Universität München, Arcisstr. 21, D-80290 München, Germany;Zentrum Mathematik, Technische Universität München, Arcisstr. 21, D-80290 München, Germany;tfk GmbH, Baierbrunner Str. 39, D-81379 München, Germany

  • Venue:
  • Digital and image geometry
  • Year:
  • 2001

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Abstract

The paper gives strong instability results for a basic reconstruction problem of discrete tomography, an area that is particularly motivated by demands from material sciences for the reconstruction of crystalline structures from images produced by quantitative high resolution transmission electron microscopy. In particular, we show that even extremely small changes in the data may lead to entirely different solutions. We will also give some indication of how one can possibly handle the ill-posedness of the reconstruction problem in practice.