A Study for the Self Similarity Smile Detection

  • David Freire
  • Luis Antón
  • Modesto Castrillón
Conference paper

DOI: 10.1007/978-3-642-04391-8_13

Volume 5707 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Freire D., Antón L., Castrillón M. (2009) A Study for the Self Similarity Smile Detection. In: Fierrez J., Ortega-Garcia J., Esposito A., Drygajlo A., Faundez-Zanuy M. (eds) Biometric ID Management and Multimodal Communication. BioID 2009. Lecture Notes in Computer Science, vol 5707. Springer, Berlin, Heidelberg

Abstract

Facial expression recognition has been the subject of much research in the last years within the Computer Vision community. The detection of smiles, however, has received less attention. Its distinctive configuration may pose less problem than other, at times subtle, expressions. On the other hand, smiles can still be very useful as a measure of happiness, enjoyment or even approval. Geometrical or local-based detection approaches like the use of lip edges may not be robust enough and thus researchers have focused on applying machine learning to appearance-based and self-similarity descriptors. This work makes an extensive experimental study of smile detection testing the Local Binary Patterns (LBP) combined with self similarity (LAC) as main descriptors of the image, along with the powerful Support Vector Machines classifier. Results show that error rates can be acceptable and the self similarity approach for the detection of smiles is suitable for real-time interaction, although there is still room for improvement.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • David Freire
    • 1
  • Luis Antón
    • 1
  • Modesto Castrillón
    • 1
  1. 1.SIANI, Universidad de Las Palmas de Gran CanariaSpain