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Data Mining Spontaneous Facial Behavior with Automatic Expression Coding

  • Marian Bartlett
  • Gwen Littlewort
  • Esra Vural
  • Kang Lee
  • Mujdat Cetin
  • Aytul Ercil
  • Javier Movellan
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5042)

Abstract

The computer vision field has advanced to the point that we are now able to begin to apply automatic facial expression recognition systems to important research questions in behavioral science. The machine perception lab at UC San Diego has developed a system based on machine learning for fully automated detection of 30 actions from the facial action coding system (FACS). The system, called Computer Expression Recognition Toolbox (CERT), operates in real-time and is robust to the video conditions in real applications. This paper describes two experiments which are the first applications of this system to analyzing spontaneous human behavior: Automated discrimination of posed from genuine expressions of pain, and automated detection of driver drowsiness. The analysis revealed information about facial behavior during these conditions that were previously unknown, including the coupling of movements. Automated classifiers were able to differentiate real from fake pain significantly better than naïve human subjects, and to detect critical drowsiness above 98% accuracy.  Issues for application of machine learning systems to facial expression analysis are discussed.

Keywords

Facial expression recognition machine learning 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Marian Bartlett
    • 1
  • Gwen Littlewort
    • 1
  • Esra Vural
    • 1
    • 3
  • Kang Lee
    • 2
  • Mujdat Cetin
    • 3
  • Aytul Ercil
    • 3
  • Javier Movellan
    • 1
  1. 1.Institute for Neural ComputationUniversity of CaliforniaSan Diego, La JollaUSA
  2. 2.Human Development and Applied PsychologyUniversity of TorontoOntarioCanada
  3. 3.Engineering and Natural ScienceSabanci UniversityIstanbulTurkey

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