Ara es mostren els items 69-88 de 89

    • 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 ...
    • Topographic map visualization from adaptively compressed textures 

      Andújar Gran, Carlos Antonio (North Holland, 2010)
      Article
      Accés obert
      Raster-based topographic maps are commonly used in geoinformation systems to overlay geographic entities on top of digital terrain models. Using compressed texture formats for encoding topographic maps allows reducing ...
    • Topology-reducing surface simplification using a discrete solid representation 

      Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Ayala Vallespí, M. Dolors (2002-04)
      Article
      Accés restringit per política de l'editorial
      This paper presents a new approach for generating coarse-level approximations of topologically complex models. Dramatic topology reduction is achieved by converting a 3D model to and from a volumetric representation. Our ...
    • Tree variations 

      Argudo Medrano, Óscar; Andújar Gran, Carlos Antonio; Chica Calaf, Antonio (2017)
      Text en actes de congrés
      Accés obert
      The cost-effective generation of realistic vegetation is still a challenging topic in computer graphics. The simplest representation of a tree consists of a single texture-mapped billboard. Although a tree billboard does ...
    • View-dependent hierarchical rendering of massive point clouds through textured splats 

      Comino Trinidad, Marc; Chica Calaf, Antonio; Andújar Gran, Carlos Antonio (European Association for Computer Graphics (Eurographics), 2019)
      Text en actes de congrés
      Accés obert
      Nowadays, there are multiple available range scanning technologies which can capture extremely detailed models of realworld surfaces. The result of such process is usually a set of point clouds which can contain billions ...
    • Visual feedback techniques for virtual pointing on stereoscopic displays 

      Argelaguet Sanz, Fernando; Andújar Gran, Carlos Antonio (2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The act of pointing to graphical elements is one of the fundamental tasks in Human-Computer Interaction. In this paper we analyze visual feedback techniques for accurate pointing on stereoscopic displays. Virtual feedback ...
    • Visualization of large-scale urban models through multi-level relief impostors 

      Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Chica Calaf, Antonio; Navazo Álvaro, Isabel (North Holland, 2010-12)
      Article
      Accés restringit per política de l'editorial
      In this paper, we present an efficient approach for the interactive rendering of large-scale urban models, which can be integrated seamlessly with virtual globe applications. Our scheme fills the gap between standard ...
    • VR-assisted architectural design in a heritage site: the Sagrada Família case study 

      Andújar Gran, Carlos Antonio; Brunet Crossa, Pere; Buxareu, Jeronimo; Fons Sánchez, Joan; Laguarda, Narcis; Pascual, Jordi; Pelechano Gómez, Núria (European Association for Computer Graphics (Eurographics), 2018)
      Text en actes de congrés
      Accés obert
      Virtual Reality (VR) simulations have long been proposed to allow users to explore both yet-to-built buildings in architectural design, and ancient, remote or disappeared buildings in cultural heritage. In this paper we ...
    • Way-finder: guided tours through complex walkthrough models 

      Andújar Gran, Carlos Antonio; Vázquez Alcocer, Pere Pau; Fairén González, Marta (North Holland, 2004-09)
      Article
      Accés restringit per política de l'editorial
      The exploration of complex walkthrough models is often a difficult task due to the presence of densely occluded regions which pose a serious challenge to online navigation. In this paper we address the problem of algorithmic ...