Ara es mostren els items 1-20 de 23

  • A software framework for the development of projection-based augmented reality systems 

    Sunet Pérez, Marc; Comino Trinidad, Marc; Karatzas, Dìmosthenis; Chica Calaf, Antonio; Vázquez Alcocer, Pere Pau (2010)
    Comunicació de congrés
    Accés obert
    Despite the large amount of methods and applications of augmented reality, there is little homogenization on the software platforms that support them. An exception may be the low level control software that is provided by ...
  • Biharmonic fields and mesh completion 

    Argudo Medrano, Óscar; Brunet Crosa, Pere; Chica Calaf, Antonio; Vinacua Pla, Álvaro (2015-11)
    Article
    Accés obert
    We discuss bi-harmonic fields which approximate signed distance fields. We conclude that the bi-harmonic field approximation can be a powerful tool for mesh completion in general and complex cases. We present an adaptive, ...
  • Coherent multi-layer landscape synthesis 

    Argudo Medrano, Óscar; Andújar Gran, Carlos Antonio; Chica Calaf, Antonio; Guerin, Eric (Springer, 2017-05-08)
    Article
    Accés obert
    We present an efficient method for generating coherent multi-layer landscapes. We use a dictionary built from exemplars to synthesize high-resolution fully featured terrains from input low-resolution elevation data. Our ...
  • Computing maximal tiles and application to impostor-based simplification 

    Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Chica Calaf, Antonio; Navazo Álvaro, Isabel; Rossignac, Jarek; Vinacua Pla, Álvaro (North Holland, 2004-08)
    Article
    Accés restringit per política de l'editorial
    The computation of the largest planar region approximating a 3D object is an important problem with wide applications in modeling and rendering. Given a voxelization of the 3D object, we propose an efficient algorithm to ...
  • Development of general-purpose projection-based augmented reality systems 

    Sunet Pérez, Marc; Comino Trinidad, Marc; Karatzas, Dimosthenis; Chica Calaf, Antonio; Vázquez Alcocer, Pere Pau (2016-12-20)
    Article
    Accés restringit per política de l'editorial
    Despite the large amount of methods and applications of augmented reality, there is little homogenizatio n on the software platforms that support them. An exception may be the low level control software that is provided ...
  • Error-aware construction and rendering of multi-scan panoramas from massive point clouds 

    Comino Trinidad, Marc; Andújar Gran, Carlos Antonio; Chica Calaf, Antonio; Brunet Crosa, Pere (2016-09-30)
    Article
    Accés obert
    Obtaining 3D realistic models of urban scenes from accurate range data is nowadays an important research topic, with applications in a variety of fields ranging from Cultural Heritage and digital 3D archiving to monitoring ...
  • GL-Socket: A CG plugin-based framework for teaching and assessment 

    Andújar Gran, Carlos Antonio; Chica Calaf, Antonio; Fairén González, Marta; Vinacua Pla, Álvaro (European Association for Computer Graphics (Eurographics), 2018)
    Text en actes de congrés
    Accés obert
    In this paper we describe a plugin-based C++ framework for teaching OpenGL and GLSL in introductory Computer Graphics courses. The main strength of the framework architecture is that student assignments are mostly independent ...
  • Human-document interaction systems: a new frontier for document image analysis 

    Karatzas, Dimosthenis; Poulain d'Andecy, Vincent; Rusiñol, Marçal; Chica Calaf, Antonio; Vázquez Alcocer, Pere Pau (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Text en actes de congrés
    Accés obert
    All indications show that paper documents will not cede in favour of their digital counterparts, but will instead be used increasingly in conjunction with digital information. An open challenge is how to seamlessly link ...
  • Inexpensive reconstruction and rendering of realistic roadside landscapes 

    Andújar Gran, Carlos Antonio; Chica Calaf, Antonio; Vico Moya, Miguel Ángel; Moya Santos, Sergio; Brunet Crosa, Pere (2014-09-01)
    Article
    Accés obert
    In this paper, we present an inexpensive approach to create highly detailed reconstructions of the landscape surrounding a road. Our method is based on a space-efficient semi-procedural representation of the terrain and ...
  • Multiscale acquisition and presentation of very large artifacts: The case of Portalada [Ripoll Monastery, Spain] 

    Brunet Crosa, Pere; Callieri, Marco; Chica Calaf, Antonio; Dellepiane, Matteo; Besora Vilardaga, Isaac; Corsini, Massimiliano; Moyés, Jordi; Ranzuglia, Guido; Scopigno, Roberto (2011-04)
    Article
    Accés restringit per política de l'editorial
    The dichotomy between full detail representation and the efficient management of data digitization is still a big issue in the context of the acquisition and visualization of 3D objects, especially in the field of the ...
  • Optimal iso-surfaces 

    Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Chica Calaf, Antonio; Navazo Álvaro, Isabel; Rossignac, Jarek; Vinacua Pla, Álvaro (2004-05)
    Article
    Accés obert
    Since the publication of the original Marching Cubes algorithm, numerous variations have been proposed for guaranteeing water-tight constructions of triangulated approximations of iso-surfaces. Most approaches divide the ...
  • Optimized skin rendering for scanned models 

    Hernando Buch, Roger; Chica Calaf, Antonio; Vázquez Alcocer, Pere Pau (2016)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    Skin is one of the most difficult materials to reproduce in computer graphics, mainly due to two major factors: First, the complexity of the light interactions happening at the subsurface layers of skin, and second, the ...
  • Optimizing the topological and combinatorial complexity of isosurfaces 

    Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Chica Calaf, Antonio; Navazo Álvaro, Isabel; Rossignac, Jarek; Vinacua Pla, Álvaro (Elsevier, 2005-07)
    Article
    Accés obert
    Since the publication of the original Marching Cubes algorithm, numerous variations have been proposed for guaranteeing water-tight constructions of triangulated approximations of isosurfaces. Most approaches divide the ...
  • Portalada: a virtual reconstruction of the entrance of the Ripoll Monastery 

    Scopigno, Roberto; Ranzuglia, Guido; Besora Vilardaga, Isaac; Brunet Crosa, Pere; Callieri, Marco; Chica Calaf, Antonio; Corsini, Massimiliano; Dellepiane, Matteo; Morales, Daniel; Moyés, Jordi (Stephan Gumhold, Jana Kosecka and Oliver Staadt, 2008)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The dichotomy between detail representation and data management is still a big issue in the context of the acquisition and visualization of 3D objects, especially in the field of Cultural Heritage. New technologies give ...
  • Pressing: Smooth isosurfaces with flats from binary grids 

    Chica Calaf, Antonio; Williams, J.; Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Navazo Álvaro, Isabel; Rossignac, J.; Vinacua Pla, Álvaro (2006-02)
    Report de recerca
    Accés obert
    We explore the automatic recovery of solids from their volumetric discretizations. In particular, we propose an approach, called Pressing, for smoothing isosurfaces extracted from binary volumes while recovering their large ...
  • Real-time exploration of the virtual reconstruction of the entrance of the Ripoll Monastery 

    Besora Vilardaga, Isaac; Brunet Crosa, Pere; Chica Calaf, Antonio; Morales, Daniel; Moyés, Jordi (Eurographics association, 2008-09-30)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper presents the project of the virtual reconstruction and inspection of the "Portalada", the entrance of the Ripoll Monastery. In a first step, the monument of 7 x 11 meters was acquired using triangulation laser ...
  • Segmentation of aerial images for plausible detail synthesis 

    Argudo Medrano, Óscar; Comino Trinidad, Marc; Chica Calaf, Antonio; Andújar Gran, Carlos Antonio; Lumbreras, Felipe (2018-04-01)
    Capítol de llibre
    Accés obert
    The visual enrichment of digital terrain models with plausible synthetic detail requires the segmentation of aerial images into a suitable collection of categories. In this paper we present a complete pipeline for segmenting ...
  • Sensor-aware normal estimation for point clouds from 3D range scans 

    Comino Trinidad, Marc; Andújar Gran, Carlos Antonio; Chica Calaf, Antonio; Brunet Crossa, Pere (2018)
    Article
    Accés restringit per política de l'editorial
    Normal vectors are essential for many point cloud operations, including segmentation, reconstruction and rendering. The robust estimation of normal vectors from 3D range scans is a challenging task due to undersampling and ...
  • Single-picture reconstruction and rendering of trees for plausible vegetation synthesis 

    Argudo Medrano, Óscar; Chica Calaf, Antonio; Andújar Gran, Carlos Antonio (2016-06-01)
    Article
    Accés obert
    State-of-the-art approaches for tree reconstruction either put limiting constraints on the input side (requiring multiple photographs, a scanned point cloud or intensive user input) or provide a representation only suitable ...
  • Terrain super-resolution through aerial imagery and fully convolutional networks 

    Argudo Medrano, Óscar; Chica Calaf, Antonio; Andújar Gran, Carlos Antonio (2018-05-22)
    Article
    Accés restringit per política de l'editorial
    Despite recent advances in surveying techniques, publicly available Digital Elevation Models (DEMs) of terrains are low-resolution except for selected places on Earth. In this paper we present a new method to turn ...