Ara es mostren els items 1-20 de 30

  • A hierarchical architecture to multiple target tracking 

    Rowe, Daniel; Huerta Casado, Iván; Perdersoli, Marco; Guinea, Soledad; Gonzàlez, Jordi; Villanueva, Juan J. (s. n., 2007)
    Text en actes de congrés
    Accés obert
    This work presents an architecture based on a modular and hierarchically-organised system to perform Multiple-Target Tracking (MTT). A set of co-operating modules, which work following both bottom-up and top-down paradigms, ...
  • A simple method of multiple camera calibration for the joint top view projection 

    Mozerov, Mikhail; Amato, Ariel; Al, Murad; Gonzàlez, Jordi (Springer, 2007)
    Capítol de llibre
    Accés obert
    A simple method for multiple camera calibration based on a novel geometric derivation is presented. The main advantage of this method is that it uses only three points in the world coordinate system to achieve the calibration. ...
  • A survey on model based approaches for 2D and 3D visual human pose recovery 

    Perez Sala, Xavier; Escalera, Sergio; Angulo Bahón, Cecilio; Gonzàlez, Jordi (2014-03-03)
    Article
    Accés obert
    Human Pose Recovery has been studied in the field of Computer Vision for the last 40 years. Several approaches have been reported, and significant improvements have been obtained in both data representation and model design. ...
  • 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 ...
  • Automatic generation of computer animated sequences based on human behaviour modelling 

    Baiget, Pau; Soto, Joan; Roca, Francesc Xavier; Gonzàlez, Jordi (s. n., 2007)
    Text en actes de congrés
    Accés obert
    This paper presents a complete framework to automatically generate synthetic image sequences by designing and simulating complex human behaviors in virtual environments. Given an initial state of a virtual agent, a simulation ...
  • Automatic learning of 3D pose variability in walking performances for gait analysis 

    Rius, Ignasi; Gonzàlez, Jordi; Mozerov, Mikhail; Roca, Francesc Xavier (Serials Publications, 2008)
    Article
    Accés obert
    This paper proposes an action specific model which automatically learns the variability of 3D human postures observed in a set of training sequences. First, a Dynamic Programing synchronization algorithm is presented in ...
  • Automatic learning of conceptual knowledge in image sequences for human behavior interpretation 

    Baiget, Pau; Fernández, Carles; Roca, Francesc Xavier; Gonzàlez, Jordi (Springer Verlag, 2007)
    Capítol de llibre
    Accés obert
    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 ...
  • Background subtraction fusing colour, intensity and edge cues 

    Huerta Casado, Iván; Rowe, Daniel; Viñas, Miguel; Mozerov, Mikhail; Gonzàlez, Jordi (s. n., 2007)
    Text en actes de congrés
    Accés obert
    This paper presents a new background subtraction algorithm for known mobile objects segmentation from a static background scene. Firstly, a casuistry of colour-motion segmentation problems is presented. Our approach first ...
  • Boosting histograms of oriented gradients for human detection 

    Perdersoli, Marco; Gonzàlez, Jordi; Chakraborty, Bhaskar; Villanueva, Juan J. (s. n., 2007)
    Text en actes de congrés
    Accés obert
    In this paper we propose a human detection framework based on an enhanced version of Histogram of Oriented Gradients (HOG) features. These feature descriptors are computed with the help of a precalculated histogram of ...
  • Chromatic shadow detection and tracking for moving foreground segmentation 

    Huerta Casado, Iván; Holte, Michael B.; Moeslund, Thomas; Gonzàlez, Jordi (2015)
    Article
    Accés restringit per política de l'editorial
    Advanced segmentation techniques in the surveillance domain deal with shadows to avoid distortions when detecting moving objects. Most approaches for shadow detection are still typically restricted to penumbra shadows and ...
  • Component-based human detection 

    Chakraborty, Bhaskar; Rius, Ignasi; Perdersoli, Marco; Mozerov, Mikhail; Gonzàlez, Jordi (s. n., 2007)
    Text en actes de congrés
    Accés obert
    In this paper, we present a general framework for human detection in a video sequence by components. The technique is demonstrated by developing a system that locates people in the cluttered scenes where they are performing ...
  • Computationally efficient graph matching via energy vector extraction 

    Amato, Ariel; Al, Murad; Lladós, Josep; Gonzàlez, Jordi (Springer, 2007)
    Text en actes de congrés
    Accés obert
    This paper presents a method for graph matching based on domain knowledge by quantifying representative graph features. Our method searches and extracts the most relevant cues in different graphs. Once these cues are ...
  • Constructing a path database for scene categorization 

    Baiget, Pau; Fernández, Carles; Amato, Ariel; Roca, Francesc Xavier; Gonzàlez, Jordi (s. n., 2007)
    Text en actes de congrés
    Accés obert
    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 ...
  • 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 ...
  • Enhancing real-time human detection based on histograms of oriented gradients 

    Perdersoli, Marco; Gonzàlez, Jordi; Chakraborty, Bhaskar; Villanueva, Juan J. (Springer, 2007)
    Capítol de llibre
    Accés obert
    In this paper we propose a human detection framework based on an enhanced version of Histogram of Oriented Gradients (HOG) features. These feature descriptors are computed with the help of a precalculated histogram of ...
  • Face detection in color images using primitive shape features 

    Al, Murad; Amato, Ariel; Roca, Francesc Xavier; Gonzàlez, Jordi (Springer, 2007)
    Capítol de llibre
    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, ...
  • 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, ...
  • HERMES: A research project on human sequence evaluation 

    Gonzàlez, Jordi; Roca, Francesc Xavier; Villanueva, Juan J. (Taylor and Francis, 2007)
    Text en actes de congrés
    Accés obert
    Human Sequence Evaluation concentrates on how to extract descriptions of human behaviour from videos in a restricted discourse domain, such as (i) pedestrians crossing inner-city roads where pedestrians appear approaching ...
  • 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 ...
  • High-level integration for cognitive vision surveillance 

    Fernández, Carles; Baiget, Pau; Roca, Francesc Xavier; Gonzàlez, Jordi (s. n., 2007)
    Text en actes de congrés
    Accés obert
    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 ...