Now showing items 1-11 of 11

  • A novel method for low-constrained iris boundary localization 

    Fernández, Carles; Pérez, Dídac; Segura, Carlos; Hernando Pericás, Francisco Javier (2012)
    Conference lecture
    Open Access
    Iris recognition systems are strongly dependent on their segmentation processes, which have traditionally assumed rigid experimental constraints to achieve good performance, but now move towards less constrained environments. ...
  • Accelerating boosting-based face detection on GPUs 

    Oro, David; Fernández, Carles; Segura, Carlos; Martorell Bofill, Xavier; Hernando Pericás, Francisco Javier (2012)
    Conference report
    Restricted access - publisher's policy
    The goal of face detection is to determine the presence of faces in arbitrary images, along with their locations and dimensions. As it happens with any graphics workloads, these algorithms benefit from data-level ...
  • Automatic learning of conceptual knowledge in image sequences for human behavior interpretation 

    Baiget, Pau; Fernández, Carles; Roca, Francesc Xavier; Gonzàlez, Jordi (Springer Verlag, 2007)
    Part of book or chapter of book
    Open Access
    This work describes an approach for the interpretation and explanation of human behavior in image sequences, within the context of a Cognitive Vision System. The information source is the geometrical data obtained by ...
  • Constructing a path database for scene categorization 

    Baiget, Pau; Fernández, Carles; Amato, Ariel; Roca, Francesc Xavier; Gonzàlez, Jordi (s. n., 2007)
    Conference report
    Open Access
    Human behavior understanding in image sequences requires to study human interaction with the environment, because human beings behave depending on their location. Therefore, a semantic labeling of the scenario must be ...
  • High-level integration for cognitive vision surveillance 

    Fernández, Carles; Baiget, Pau; Roca, Francesc Xavier; Gonzàlez, Jordi (s. n., 2007)
    Conference report
    Open Access
    The increasing interest in Cognitive Vision Systems (CVS) motivates the apparition of ad-hoc stages designed for the integration of multiple kinds of knowledge. This paper proposes a novel ontology to restrict and integrate ...
  • Interpretation of complex situations in a semantic-based surveillance framework 

    Fernández, Carles; Baiget, Pau; Roca Marva, Francesc Xavier; González Sabaté, Jordi (2008)
    Article
    Open Access
    The integration of cognitive capabilities in computer vision systems requires both to enable high semantic expressiveness and to deal with high computational costs as large amounts of data are involved in the analysis. ...
  • Natural language descriptions of human behaviour from video sequences 

    Fernández, Carles; Baiget, Pau; Roca, Francesc Xavier; Gonzàlez, Jordi (Springer, 2007)
    Part of book or chapter of book
    Open Access
    This contribution addresses the generation of textual descriptions in several natural languages for evaluation of human behavior in video sequences. The problem is tackled by converting geometrical information extracted ...
  • New approaches for iris boundary localization 

    Pérez, Dídac; Fernández, Carles; Segura, Carlos; Hernando Pericás, Francisco Javier (Universidad de las Palmas de Gran Canarias, 2012)
    Conference report
    Open Access
    Iris segmentation is the most determining factor in iris biometrics, which has traditionally assumed rigid constrained environments. In this work, a novel method that covers the localization of the pupillaty and limbic ...
  • Ontology for semantic integration in a cognitive surveillance system 

    Fernández, Carles; Gonzàlez, Jordi (Springer, 2007)
    Part of book or chapter of book
    Open Access
    The increasing interest in Cognitive Vision Systems (CVS) motivates the apparition of ad-hoc stages designed for the integration of multiple kinds of knowledge. This paper proposes a novel ontology to restrict and integrate ...
  • Real-time GPU-based face detection in HD video sequences 

    Oro, David; Fernández, Carles; Rodriguez Saeta, Javier; Martorell Bofill, Xavier; Hernando Pericás, Francisco Javier (2011)
    Conference lecture
    Restricted access - publisher's policy
    Modern GPUs have evolved into fully programmable parallel stream multiprocessors. Due to the nature of the graphic workloads, computer vision algorithms are in good position to leverage the computing power of these ...
  • Semantic annotation of complex human scenes for multimedia surveillance 

    Fernández, Carles; Baiget, Pau; Roca, Francesc Xavier; Gonzàlez, Jordi (Springer, 2007)
    Part of book or chapter of book
    Open Access
    A Multimedia Surveillance System (MSS) is considered for automatically retrieving semantic content from complex outdoor scenes, involving both human behavior and traffic domains. To characterize the dynamic information ...