Recent Submissions

  • Kinematic identification of parallel mechanisms by a divide and conquer strategy 

    Durango S.; Externo - Escuela - Ingeniería; Ruiz O.; Restrepo-Giraldo J.; Achiche S. (INSTICC-INST SYST TECHNOLOGIES INFORMATION CONTROL & COMMUNICATION, 2010-01-01)
    This paper presents a Divide and Conquer strategy to estimate the kinematic parameters of parallel symmetrical mechanisms. The Divide and Conquer kinematic identification is designed and performed independently for each ...
  • Mesh Segmentation and Texture Mapping for Dimensional Inspection inWeb3D 

    Mejia D.; Sánchez J.R.; Segura Á.; Ruiz-Salguero O.; Posada J.; Cadavid C. (Association for Computing Machinery, Inc, 2017-01-01)
    Traditionally, the data generated by industrial metrology so.ware is stored as static reports that metrology experts produce for engineering and production departments. Nevertheless, industry demands new approaches that ...
  • Hessian eigenfunctions for triangular mesh parameterization 

    Mejia, D.; Ruiz OE; Cadavid, C. (SciTePress, 2016-02-27)
    Hessian Locally Linear Embedding (HLLE) is an algorithm that computes the nullspace of a Hessian functional H for Dimensionality Reduction (DR) of a sampled manifold M. This article presents a variation of classic HLLE for ...
  • Volume Visual Attention Maps (VVAM) in ray-casting rendering 

    Beristain, A.; Congote, J.; Ruiz, O. (IOS Press, 2012-01-01)
    This paper presents an extension visual attention maps for volume data visualization, where eye fixation points become rays in the 3D space, and the visual attention map becomes a volume. This Volume Visual Attention Map ...
  • Upper Limb Robot Assisted Rehabilitation Platform Combining Virtual Reality, Posture Estimation and Kinematic Indices 

    Scorza, D.; de Los Reyes, A.; Cortes, C.; Ardanza, A.; Bertelsen, A.; Ruiz, O. E.; Gil, A.; Florez, J. (Springer International Publishing AG, 2017-01-01)
    Upper limb rehabilitation is critical for patients affected by spinal cord injury (SCI). Currently, robotics and Virtual Reality (VR) have changed the way in which rehabilitation therapies are provided. However, a still ...
  • Direct Scalar Field - to - Truss Representation and Stress Simulation of Open Pore Domains 

    M, J; Ruiz-Salguero O.; Montoya, D; Cortes, C; Cadavid, C (2018-10-18)
    In the domain of lattice and porous material geometric modeling, the problem of data size is central.
  • Fast Spectral Formulations of Thin Plate Laser Heating with GPU Implementation 

    Mejia-Parra D.; Arbelaiz A.; Moreno A.; Posada J.; Ruiz-Salguero O. (Institute of Electrical and Electronics Engineers Inc., 2020-01-01)
    In the context of numerical methods, the problem of frequency-domain (spectral) simulations is crucial for the solution of Partial Differential Equations. Fast Fourier Transform (FFT) algorithms significantly reduce the ...
  • Meta-modeling of Lattice Mechanical Responses via Design of Experiments 

    Montoya-Zapata D.; Acosta D.A.; Cortes C.; Pareja-Corcho J.; Moreno A.; Posada J.; Ruiz-Salguero O. (Institute of Electrical and Electronics Engineers Inc., 2020-01-01)
    In the context of lattice manufacturing, the problem of mechanical and structural characterization of large lattice domains is relevant. Lattice materials are used in engineering (e.g. in energy absorption and heat conduction) ...
  • FEA Structural Optimization Based on Metagraphs 

    Montoya-Zapata D.; Acosta D.A.; Ruiz-Salguero O.; Sanchez-Londono D. (Springer Verlag, 2019-01-01)
    Evolutionary Structural Optimization (ESO) seeks to mimic the form in which nature designs shapes. This paper focuses on shape carving triggered by environmental stimuli. In this realm, existing algorithms delete under - ...
  • Pixel-based Wake Interaction and Power Estimation for a Wind Farm with Irregular Boundary 

    Ohlsen,, G; Ruiz-Salguero O.; Full,, T.; Acosta D.A. (2018-10-18)
    In the domain of generation of wind turbine energy, it is central to correctly estimate the interactions among the various turbines in a wind turbine farm.
  • Real-time depth map generation architecture for 3D videoconferencing 

    Congote, J.; Barandiaran, I.; Barandiaran, J.; Montserrat, T.; Quelen, J.; Ferran, C.; Mindan, P.J.; Mur, O.; Tarres, F.; Ruiz, O. (2010-01-01)
    In this paper we present a reliable depth estimation system which works in real-time with commodity hardware. The system is specially intended for 3D visualization using autostereoscopic displays. The core of this work is ...
  • Robust CT to US 3D-3D Registration by Using Principal Component Analysis and Kalman Filtering 

    Echeverría, R.; Cortes, C.; Bertelsen, A.; Macia, I.; Ruiz, Ó.E.; Flórez, J. (SPRINGER, 2016-01-01)
    Algorithms based on the unscented Kalman filter (UKF) have been proposed as an alternative for registration of point clouds obtained from vertebral ultrasound (US) and computerised tomography (CT) scans, effectively handling ...
  • REAL-TIME DEPTH MAP GENERATION ARCHITECTURE FOR 3D VIDEOCONFERENCING 

    John Congote; Iñigo Barandiaran; Javier Barandiaran; Tomas Montserrat; Julien Quelen; Christian Ferran; Pere J. Mindan; Olga Mur; Francesc Tarres; Ruiz OE (IEEE, 2010-06-09)
    In this paper we present a reliable depth estimation system which works in real-time with commodity hardware. The system is specially intended for 3D visualization using autostereoscopic displays. The core of this work is ...
  • Hardware-accelerated web visualization of vector fields: Case study in oceanic currents 

    Aristizabal, M.; Congote, J.; Segura, A.; Moreno, A.; Arregui, H.; Ruiz, O. (2012-01-01)
    Visualization of vector fields plays an important role in research activities nowadays. Increasing web applications allow a fast, multi-platform and multi-device access to data. As a result, web applications must be optimized ...
  • Face reconstruction with structured light 

    Congote, J.; Barandiaran, I.; Barandiaran, J.; Nieto, M.; Ruiz, O. (INSTICC-INST SYST TECHNOLOGIES INFORMATION CONTROL & COMMUNICATION, 2011-01-01)
    This article presents a methodology for reconstruction of 3D faces which is based on stereoscopic images of the scene using active and passive surface reconstruction. A sequence of Gray patterns is generated, which are ...
  • Interactive visualization of volumetric data with WebGL in real-time 

    Congote, J.; Segura, A.; Kabongo, L.; Moreno, A.; Posada, J.; Ruiz, O. (2011-01-01)
    This article presents and discusses the implementation of a direct volume rendering system for the Web, which articulates a large portion of the rendering task in the client machine. By placing the rendering emphasis in ...
  • Design of computer experiments applied to modeling compliant mechanisms 

    Arango, D.R.; Acosta, D.A.; Durango, S.; Ruiz, O.E. (DELFT UNIV TECHNOLOGY, FAC INDUST DESIGN ENG, 2010-01-01)
    This article discusses a procedure for force-displacement modeling compliant mechanisms by using a design of computer experiments methodology. This approach produces a force-displacement metamodel that is suited for real-time ...
  • Marching cubes in an unsigned distance field for surface reconstruction from unorganized point sets 

    Congote, J.; Moreno, A.; Barandiaran, I.; Barandiaran, J.; Posada, J.; Ruiz, O. (INSTICC-INST SYST TECHNOLOGIES INFORMATION CONTROL & COMMUNICATION, 2010-01-01)
    Surface reconstruction from unorganized point set is a common problem in computer graphics. Generation of the signed distance field from the point set is a common methodology for the surface reconstruction. The reconstruction ...
  • Adaptative cubical grid forisosurface extraction 

    Congote, J.; Moreno, A.; Barandiaran, I.; Barandiaran, J.; Ruiz, O.E. (2009-01-01)
    This work proposes a variation on the Marching Cubes algorithm, where the goal is to represent implicit functions with higher resolution and better graphical qualiry using the same grid size. The proposed algorithm displaces ...
  • Geometrical degeneracy removal by virtual disturbances - An application to surface reconstruction from point slice samples 

    Ruiz, Oscar; Vasquez, Eliana; Pena, Sebastian; Granados, Miguel (INSTICC-INST SYST TECHNOLOGIES INFORMATION CONTROL & COMMUNICATION, 2008-01-01)
    In surface reconstruction from slice samples (typical in medical imaging, coordinate measurement machines, stereolithography, etc.) the available methods attack the geometrical and topological properties of the surface. ...

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