Gates for Handling Occlusion in Bayesian Models of Images: An Initial Study

  • Daniel Oberhoff
  • Dominik Endres
  • Martin A. Giese
  • Marina Kolesnik
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7006)


Probabilistic systems for image analysis have enjoyed increasing popularity within the last few decades, yet principled approaches to incorporating occlusion as a feature into such systems are still few [11,10,7]. We present an approach which is strongly influenced by the work on noisy-or generative factor models (see e.g. [3]). We show how the intractability of the hidden variable posterior of noisy-or models can be (conditionally) lifted by introducing gates on the input combined with a sparsifying prior, allowing for the application of standard inference procedures. We demonstrate the feasibility of our approach on a computer vision toy problem.


Latent Variable Mixture Model Bayesian Model Dirichlet Process Input Pixel 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Daniel Oberhoff
    • 1
  • Dominik Endres
    • 2
  • Martin A. Giese
    • 2
  • Marina Kolesnik
    • 1
  1. 1.Fraunhofer FIT-LIFEAugustinGermany
  2. 2.Section for Computational Sensomotorics, Dept. of Cognitive NeurologyUniversity Clinic, CIN, HIH and University of TübingenTübingenGermany

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