The Biometric Characteristics of a Smile

  • Hassan UgailEmail author
  • Ahmad Ali Asad Aldahoud
Part of the SpringerBriefs in Computer Science book series (BRIEFSCOMPUTER)


Facial expressions have been studied looking for its diagnostic capabilities in mental health and clues for longevity, gender and other such personality traits. The use of facial expressions, especially the expression of smile, as a biometric has not been looked into great detail. However, research shows that a person can be identified from their behavioural traits including their emotional expressions. In this Chapter, we discuss a novel computational biometric model which can be derived from the smile expression. We discuss how the temporal components of a smile can be utilised to show that similarities in the smile exist for an individual and it can be enabled to create a tool which can be utilised as a biometric.


Smile biometrics Smile dynamics Smile intervals Clustering 


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Copyright information

© The Author(s), under exclusive licence to Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Faculty of Engineering and InformaticsUniversity of BradfordBradfordUK
  2. 2.Faculty of Engineering and MathematicsUniversity of BradfordBradfordUK

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