Now showing items 1-20 of 142

  • 3D human action recognition in multiple view scenarios 

    Canton Ferrer, Cristian; Casas Pla, Josep Ramon; Pardàs Feliu, Montse; Sargin, M E; Tekalp, A M (Universitat Politècnica de Catalunya (UPC), 2006)
    Conference report
    Open Access
    This paper presents a novel view-independent approach to the recognition of human gestures of several people in low resolution sequences from multiple calibrated cameras. In contraposition with other multi-ocular ...
  • 3d semantic representation of actions from effcient stereo-image-sequence segmentation on GPUs 

    Alexey, Abramov; Aksoy, Eren Erdal; Dörr, Johannes; Wörgötter, Florentin; Pauwels, Karl; Dellen, Babette (2010)
    Conference report
    Open Access
    A novel real-time framework for model-free stereo-video segmentation and stereo-segment tracking is presented, combining real-time optical flow and stereo with image segmentation running separately on two GPUs. The ...
  • A comparison between two representatives of a set of graphs: median vs barycenter graph 

    Bardaji Goikoetxea, Itziar; Ferrer Sumsi, Miquel; Sanfeliu Cortés, Alberto (Springer Verlag, 2010)
    Conference report
    Open Access
    In this paper we consider two existing methods to generate a representative of a given set of graphs, that satisfy the following two conditions. On the one hand, that they are applicable to graphs with any kind of labels ...
  • A generic framework for median graph computation based on a recursive embedding approach 

    Ferrer Sumsi, Miquel; Karatzas, D; Valveny, Ernest; Bardaji Goikoetxea, Itziar; Bunke, Horst (2011)
    Article
    Open Access
    The median graph has been shown to be a good choice to obtain a representative of a set of graphs. However, its computation is a complex problem. Recently, graph embedding into vector spaces has been proposed to obtain ...
  • Alfombra Multisensorial 

    López García, Roberto (Universitat Politècnica de Catalunya, 2013-01-15)
    Master thesis (pre-Bologna period)
    Open Access
    Alfombra Multisensorial es una aplicación que permite crear y ejecutar actividades con un objetivo lúdico y educativo, destinado a personas con discapacidad física, motriz o sensorial con la finalidad de estimular a la ...
  • Aligned texture map creation for pose invariant face recognition 

    Rama, Antonio; Tarrés Ruiz, Francisco; Rurainsky, Jürgen (2010-09)
    Article
    Restricted access - publisher's policy
  • A local algorithm for the computation of image velocity via constructive interference of global Fourier components 

    Dellen, Babette; Wörgötter, Florentin (2011)
    Article
    Open Access
    A novel Fourier-based technique for local motion detection from image sequences is proposed. In this method, the instantaneous velocities of local image points are inferred directly from the global 3D Fourier components ...
  • Anàlisi de vídeo per la detecció automàtica de cares 

    Braup Areces, Josep Maria (Universitat Politècnica de Catalunya, 2006-10)
    Master thesis (pre-Bologna period)
    Open Access
  • A new algorithm to compute the distance between multi-dimensional histograms 

    Serratosa Casanelles, Francesc; Sanromà Güell, Gerard; Sanfeliu Cortés, Alberto (Springer Verlag, 2007)
    Part of book or chapter of book
    Open Access
    The aim of this paper is to present a new algorithm to compute the distance between ndimensional histograms. There are some domains such as pattern recognition or image retrieval that use the distance between histograms ...
  • A new graph matching method for point-set correspondence using the EM algorithm and Softassign 

    Sanromà Güell, Gerard; Alquézar Mancho, René; Serratosa Casanelles, Francesc (2012)
    Article
    Restricted access - publisher's policy
    Finding correspondences between two point-sets is a common step in many vision applications (e.g., image matching or shape retrieval). We present a graph matching method to solve the point-set correspondence problem, which ...
  • A new relational geometric feature for human action recognition 

    Vinagre Ruiz, Manuel; Aranda López, Juan; Casals Gelpi, Alicia (Springer, 2015-01)
    Article
    Restricted access - publisher's policy
    Pose-based features have demonstrated to outperform low-levelappearance features in human action recognition. New RGB-D cameras provide locations of human joints with which geometric correspondences can be easily calculated. ...
  • Anticipating human activities from object interaction cues 

    Aranda López, Juan; Vinagre Ruiz, Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    A real time approach to the recognition of human activity based on the interaction with objects in domestic settings is presented. It is based on capturing partial images where the activity takes place using a color camera, ...
  • Application of graph embedding to solve graph matching problems 

    Valveny, Ernest; Ferrer Sumsi, Miquel (2008)
    Conference report
    Restricted access - publisher's policy
    Graphs have very interesting properties for object representation in pattern recognition. However, graph matching algorithms are usually computationally complex. In addition, graphs are harder to manipulate and operate ...
  • Approximate nearest neighbour search with the fukunaga & narendra algorithm 

    Si, Peng (Universitat Politècnica de Catalunya, 2011-09-05)
    Master thesis
    Open Access
    English: Nearest neighbour search is the one of the most simple and used technique in Pattern Recognition due to its simplicity and its good behaviour.. Many fast NN search algorithm have been developed during last years. ...
  • Aprenentatge de la llengua de signes catalana amb Kinect 

    Górriz, Marc (Universitat Politècnica de Catalunya, 2012)
    Master thesis (pre-Bologna period)
    Open Access
    S’ha desenvolupat una aplicació per a facilitar l’aprenentatge de l’abecedari de la Llengua de signes catalana mitjançant una sèrie d’activitats de lletrejar paraules. El projecte fa ús del dispositiu Kinect per tal de ...
  • Aprenentatge de mètriques per a reconeixement facial 

    Martínez Padró, Arnau (Universitat Politècnica de Catalunya, 2014-01-21)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] This work is about implementation and test of metric learning methods, specifically the algorisms Large Margin Nearest Neighbor (LMNN) and Information Theoretic Metric Learning (ITML), in the faces identification ...
  • Aproximación de funciones implícitas de decisión por medio de máquinas de soporte vectorial 

    Hurtado, J. E. (Jorge Eduardo); Álvarez, Diego (Universitat Politècnica de Catalunya, 2003)
    Article
    Open Access
    Tanto en sistemas mecánicos como estructurales, los análisis de optimización, de confiabilidad y de estabilidad dinámica se formulan en términos de funciones, generalmente no lineales, que definen la separación entre dominios. ...
  • A recursive approach to multiscalar data interpolation of sparsely sampled sea surface measurements at different spatial resolutions 

    Reig Bolano, Ramon; Garcia Ladona, E.; Parisi Baradad, Vicenç; Marti Puig, Pere (2008)
    Conference report
    Restricted access - publisher's policy
    In many oceanographic studies there is a need to reconstruct a signal from a set of sparse measurements. We propose an algorithm to iteratively approximate the intermediate values between irregularly sampled data, when ...
  • A recursive embedding approach to median graph computation 

    Ferrer Sumsi, Miquel; Valveny, Ernest; Bunke, Horst (Springer Verlag, 2009-06-12)
    Part of book or chapter of book
    Open Access
    The median graph has been shown to be a good choice to infer a representative of a set of graphs. It has been successfully applied to graph-based classification and clustering. Nevertheless, its computation is extremely ...
  • Assessment of crowdsourcing and gamification loss in user-assisted object segmentation 

    Carlier, Axel; Salvador Aguilera, Amaia; Cabezas, Ferran; Giró Nieto, Xavier; Charvillat, Vincent; Marques, Oge (2015-09-12)
    Article
    Open Access
    There has been a growing interest in applying human computation – particularly crowdsourcing techniques – to assist in the solution of multimedia, image processing, and computer vision problems which are still too difficult ...