Ara es mostren els items 61-80 de 89

    • 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 ...
    • 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 ...
    • Output-sensitive rendering of detailed animated characters for crowd simulation 

      Spanlang, Bernhard; Andújar Gran, Carlos Antonio; Pelechano Gómez, Núria; Beacco Porres, Alejandro (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Rendering detailed animated characters is a major limiting factor in crowd simulation. In this paper we present a new representation for 3D animated characters which supports output-sensitive rendering. Each character is ...
    • PADELVIC: Multicamera videos and motion capture data in padel matches 

      Javadiha, Mohammadreza; Andújar Gran, Carlos Antonio; Calvanese, Michele; Lacasa Claver, Enrique; Moyes Ardiaca, Jordi; Pontón Martínez, José Luis; Susín Sánchez, Antonio; Wang, Jiabo (2024)
      Article
      Accés obert
      Recent advances in computer vision and deep learning techniques have opened new possibilities regarding the automatic labeling of sport videos. However, an essen-tial requirement for supervised techniques is the availability ...
    • 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 ...
    • Relief impostor selection for large scale urban rendering 

      Andújar Gran, Carlos Antonio; Díaz Iriberri, José; Brunet Crosa, Pere (2008)
      Comunicació de congrés
      Accés obert
      Image-based rendering techniques are often the preferred choice to accelerate the exploration of massive outdoor models and complex human-made structures. In the last few years, relief mapping has been shown to be extremely ...
    • Relief mapping on cubic cell complexes 

      Apaza, Karl; Andújar Gran, Carlos Antonio (2010)
      Text en actes de congrés
      Accés obert
      In this paper we present an algorithm for parameterizing arbitrary surfaces onto a quadrilateral domain defined by a collection of cubic cells. The parameterization inside each cell is implicit and thus requires storing ...
    • Robust topology simplification 

      Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Ayala Vallespí, M. Dolors (2000-05)
      Report de recerca
      Accés obert
      This paper deals with simplification algorithms for generating coarse-level approximations of both geometrically and topologically complex models. Our main contribution is a new framework called DPS which models a family ...
    • See-through techniques for referential awareness in collaborative virtual reality 

      Argelaguet Sanz, Fernando; Kulik, Alexander; Kunert, André; Andújar Gran, Carlos Antonio; Froehlich, Bernd (2011)
      Article
      Accés restringit per política de l'editorial
      Multi-user virtual reality systems enable natural collaboration in share virtual worlds. Users can talk to each other, gesture and point into the virtual scenery as if it were real. As in reality, refer ring to objects ...
    • 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 ...
    • Solid modelling for manufacturing: from Voelcker's boundary evaluation to discrete paradigms 

      Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Chica Calaf, Antonio; Navazo Álvaro, Isabel; Vinacua Pla, Álvaro (2022-11-01)
      Article
      Accés obert
      Herb Voelcker and his research team laid the foundations of Solid Modelling, on which Computer-Aided Design is based. He founded the ambitious Production Automation Project, that included Constructive Solid Geometry (CSG) ...
    • Space efficient connectivity test for n-dimensional images 

      Andújar Gran, Carlos Antonio (1998-08)
      Article
      Accés restringit per política de l'editorial
      An image is a discrete array whose elements, called points, represent some property. Images are broadly used in computer graphics. In 2D graphics applications, color, depth and other image properties are frequently used. ...
    • SparsePoser: Real-time full-body motion reconstruction from sparse data 

      Pontón Martínez, José Luis; Yun, Haoran; Aristidou, Andreas; Andújar Gran, Carlos Antonio; Pelechano Gómez, Núria (2023-10-31)
      Article
      Accés obert
      Accurate and reliable human motion reconstruction is crucial for creating natural interactions of full-body avatars in Virtual Reality (VR) and entertainment applications. As the Metaverse and social applications gain ...
    • Syntactic and semantic analysis for extended feedback on computer graphics assignments 

      Andújar Gran, Carlos Antonio; Vijulie, Cristina Raluca; Vinacua Pla, Álvaro (2020-05-01)
      Article
      Accés obert
      Modern computer graphics courses require students to complete assignments involving computer programming. The evaluation of student programs, either by the student (self-assessment) or by the instructors (grading) can take ...
    • 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 ...
    • The discretized polyhedra simplification (DPS): a framework for polyhedra simplification based on decomposition schemes 

      Andújar Gran, Carlos Antonio; Ayala Vallespí, M. Dolors; Brunet Crosa, Pere (1999-01)
      Report de recerca
      Accés obert
      This work discusses simplification algorithms for the generation of a multiresolution family of solid representations from an initial polyhedral solid. We introduce the Discretized Polyhedra Simplification (DPS), a framework ...
    • The ViRVIG institute 

      Andújar Gran, Carlos Antonio; Navazo Álvaro, Isabel; Vázquez Alcocer, Pere Pau; Patow, Gustavo Ariel; Pueyo Sandez, Francesc Xavier (2011-11-16)
      Article
      Accés obert
      In this paper we present the ViRVIG Institute, a recently created institution that joins two well-known research groups: MOVING in Barcelona, and GGG in Girona. Our main research topics are Virtual Reality devices and ...
    • Top-down model fitting for hand pose recovery in sequences of depth images 

      Madadi, Meysam; Escalera, Sergio; Carruesco Llorens, Àlex; Andújar Gran, Carlos Antonio; Baró, Xavier; Gonzàlez, Jordi (2018-11)
      Article
      Accés obert
      State-of-the-art approaches on hand pose estimation from depth images have reported promising results under quite controlled considerations. In this paper we propose a two-step pipeline for recovering the hand pose from a ...