Browsing by Subject "Pattern recognition systems"

Now showing items 1-20 of 194

    • 2D Grammar Extension of the CMP Mathematical Formulae On-line Recognition System 

      Gallardo Pérez, Eva (Universitat Politècnica de Catalunya, 2009-01-21)
      Master thesis (pre-Bologna period)
      Open Access
      In the last years, the recognition of handwritten mathematical formulae has recieved an increasing amount of attention in pattern recognition research. However, the diversity of approaches to the problem and the lack of ...

    • 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 modelling of leaves from color and ToF data for robotized plant measuring 

      Alenyà Ribas, Guillem; Dellen, Babette; Torras, Carme (2011)
      Conference report
      Restricted access - publisher's policy
      Supervision of long-lasting extensive botanic experiments is a promising robotic application that some recent technological advances have made feasible. Plant modelling for this application has strong demands, particularly ...

    • 3D reconstruction and recognition of objects using a kinect camera 

      Luján Rossell, Alba (Universitat Politècnica de Catalunya, 2016-09)
      Bachelor thesis
      Open Access
      Covenantee:   Technische Universität München
      This project is based on the recent advances of 3D depth cameras, one being the Microsoft Kinect sensors. Nowadays, this technology enables to create really accurate 3D figures and scenes simplifying difficult tasks in ...

    • 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 ...

    • 3D semantic scene completion with LiDAR point clouds 

      Cortada Garcia, Martí (Universitat Politècnica de Catalunya, 2024-07-10)
      Master thesis
      Open Access
      In recent years, the development of autonomous vehicles has shown significant potential in improving road safety by reducing traffic accidents and fatalities. One of the critical technologies enabling this advancement is ...

    • A closer look at referring expressions for video object segmentation 

      Bellver Bueno, Míriam; Ventura Royo, Carles; Silberer, Carina; Kazakos, Ioannis; Torres Viñals, Jordi; Giró Nieto, Xavier (2023-01)
      Article
      Open Access
      The task of Language-guided Video Object Segmentation (LVOS) aims at generating binary masks for an object referred by a linguistic expression. When this expression unambiguously describes an object in the scene, it is ...

    • 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 computer vision-based application for the assessment of head posture: A validation and reliability study 

      Carrasco Uribarren, Andoni; Marimon Serra, Xavier; Dantony, Flora; Cabanillas Barea, Sara; Portela Otaño, Alejandro; Ceballos Laita, Luis; Massip Álvarez, Sergio (2023-03-01)
      Article
      Open Access
      As its name implies, the forward head position (FHP) is when the head is further forward of the trunk than normal. This can cause neck and shoulder tension, as well as headaches. The craniovertebral angle (CVA) measured ...

    • A deep analysis on age estimation 

      Huerta Casado, Iván; Fernandez Tena, Carles; Segura, Carlos; Hernando Pericás, Francisco Javier; Prati, Andrea (2015-12-15)
      Article
      Open Access
      The automatic estimation of age from face images is increasingly gaining attention, as it facilitates applications including advanced video surveillance, demographic statistics collection, customer profiling, or search ...

    • 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 ...

    • 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 ...

    • 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 Gelpí, 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. ...

    • 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 ...

    • A software-only approach to enable diverse redundancy on Intel GPUs for safety-related kernels 

      Andriotis, Nikolaos; Serrano Cases, Alejandro; Alcaide Portet, Sergi; Abella Ferrer, Jaume; Cazorla Almeida, Francisco Javier; Peng, Yang; Baldovin, Andrea; Paulitsch, Michael; Tsymbal, Vladimir (Association for Computing Machinery (ACM), 2023)
      Conference report
      Open Access
      Autonomous Driving (AD) systems rely on object detection and tracking algorithms that require processing high volumes of data at high frequency. High-performance graphics processing units (GPUs) have been shown to provide ...

    • 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. ...

    • A two-step approach for estimating pedestrian demand in a congested network 

      Rojas Lombarte, Eduard (Universitat Politècnica de Catalunya, 2014-07-25)
      Bachelor thesis
      Open Access
      Covenantee:   École polytechnique fédérale de Lausanne
      [ANGLÈS] In the framework of PedFlux, a long-term research project jointly carried out by the Swiss Federal Railways (SBB) and EPFL, pedestrian ow patterns arising in complex train stations are investigated. For this ...

    • Accurate human body tracking from multiple RGBZ sensors 

      Carruesco Llorens, Álex (Universitat Politècnica de Catalunya, 2014-06-26)
      Bachelor thesis
      Open Access
      [CATALÀ] En aquest projecte s'ha desenvolupat un software que permet calibrar càmeres Kinect i reconèixer gestos amb múltiples Kinect a partir de la informació de profunditat. El software s'ha dissenyat per a que pugui ...