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Kernel Conditional Ordinal Random Fields for Temporal Segmentation of Facial Action Units

  • Ognjen Rudovic
  • Vladimir Pavlovic
  • Maja Pantic
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7584)

Abstract

We consider the problem of automated recognition of temporal segments (neutral, onset, apex and offset) of Facial Action Units. To this end, we propose the Laplacian-regularized Kernel Conditional Ordinal Random Field model. In contrast to standard modeling approaches to recognition of AUs’ temporal segments, which treat each segment as an independent class, the proposed model takes into account ordinal relations between the segments. The experimental results evidence the effectiveness of such an approach.

Keywords

Action units histogram intersection kernel ordinal regression conditional random field kernel locality preserving projections 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Ognjen Rudovic
    • 1
  • Vladimir Pavlovic
    • 2
  • Maja Pantic
    • 1
    • 3
  1. 1.Computing Dept.Imperial College LondonUK
  2. 2.Dept. of Computer ScienceRutgers UniversityUSA
  3. 3.EEMCSUniversity of TwenteThe Netherlands

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