• Assessing confidence in cased based reuse step 

      García, Fabio A.; Orozco, Francisco J.; Gonzàlez, Jordi; Arcos, Lluis (IOS Press, 2007)
      Capítol de llibre
      Accés obert
      Case-Based Reasoning (CBR) is a learning approach that solves current situations by reusing previous solutions that are stored in a case base. In the CBR cycle the reuse step plays an important role into the problem solving ...
    • Deterministic and stochastic methods for gaze tracking in real-time 

      Orozco, Francisco J.; Roca, Francesc Xavier; Gonzàlez, Jordi (Springer, 2007)
      Capítol de llibre
      Accés obert
      Psychological evidence demonstrates how eye gaze analysis is requested for human computer interaction endowed with emotion recognition capabilities. The existing proposals analyse eyelid and iris motion by using colour ...
    • Finding faces in color images through primitive shape features 

      Al, Murad; Orozco, Francisco J.; Amato, Ariel; Roca, Francesc Xavier; Gonzàlez, Jordi (s. n., 2007)
      Text en actes de congrés
      Accés obert
      Face detection is a primary step in many applications such as face recognition, video surveillance, human computer interface, and expression recognition. Many existing detection techniques suffer under scale variation, ...
    • Hierarchical eyelid and face tracking 

      Orozco, Francisco J.; Gonzàlez, Jordi; Rius, Ignasi; Roca, Francesc Xavier (Springer Verlag, 2007)
      Capítol de llibre
      Accés obert
      Most applications on Human Computer Interaction (HCI) require to extract the movements of user faces, while avoiding high memory and time expenses. Moreover, HCI systems usually use low-cost cameras, while current face ...
    • Spatio-temporal reasoning for reliable facial expression interpretation 

      Orozco, Francisco J.; García, Fabio A.; Arcos, Lluis; Gonzàlez, Jordi (Bielefeld University, 2007)
      Text en actes de congrés
      Accés obert
      Understanding human behaviours and emotions has received contributions from image analysis and pattern recognition techniques in order to tackle this challenge. The most popular facial expression classifiers deal with ...