Now showing items 1-20 of 29

    • A hierarchical architecture to multiple target tracking 

      Rowe, Daniel; Huerta Casado, Iván; Perdersoli, Marco; Guinea, Soledad; Gonzàlez, Jordi; Villanueva, Juan J. (s. n., 2007)
      Conference report
      Open Access
      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)
      Part of book or chapter of book
      Open Access
      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
      Open Access
      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)
      Part of book or chapter of book
      Open Access
      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)
      Conference report
      Open Access
      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 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 ...
    • Background subtraction fusing colour, intensity and edge cues 

      Huerta Casado, Iván; Rowe, Daniel; Viñas, Miguel; Mozerov, Mikhail; Gonzàlez, Jordi (s. n., 2007)
      Conference report
      Open Access
      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)
      Conference report
      Open Access
      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
      Open Access
      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)
      Conference report
      Open Access
      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)
      Conference report
      Open Access
      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)
      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 ...
    • Deterministic and stochastic methods for gaze tracking in real-time 

      Orozco, Francisco J.; Roca, Francesc Xavier; Gonzàlez, Jordi (Springer, 2007)
      Part of book or chapter of book
      Open Access
      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)
      Part of book or chapter of book
      Open Access
      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)
      Part of book or chapter of book
      Open Access
      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)
      Conference report
      Open Access
      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)
      Conference report
      Open Access
      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)
      Part of book or chapter of book
      Open Access
      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)
      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 ...
    • Improving background subtraction based on a casuistry of colour-motion segmentation problems 

      Huerta Casado, Iván; Rowe, Daniel; Mozerov, Mikhail; Gonzàlez, Jordi (Springer Verlag, 2007)
      Part of book or chapter of book
      Open Access
      The basis for the high-level interpretation of observed patterns of human motion still relies on motion segmentation. Popular approaches based on background subtraction use colour information to model each pixel during a ...