Now showing items 1-20 of 93

    • 3D model deformations with arbitrary control points 

      Cerveró Abelló, Maria Àngels; Vinacua Pla, Álvaro; Brunet Crosa, Pere (2016-06-01)
      Article
      Open Access
      Cage-based space deformations are often used to edit and animate images and geometric models. The deformations of the cage are easily transferred to the model by recomputing fixed convex combinations of the vertices of the ...
    • 3D modeling to evaluate the thermal interferences between borehole heat exchangers in a Mediterranean area 

      Vitriu, Ezequiel; Arnó Pons, Georgina; Herms Canellas, Joan Ignasi; Felipe Blanch, José Juan de (2019)
      Conference lecture
      Restricted access - publisher's policy
      Thermal interference between Borehole Heat Exchangers (BHEs) results in a loss of performance of a geothermal installation. An analysis of this phenomenon can provide key information for enhance and optimize the design of ...
    • 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 texture-based hybrid visualizations 

      Boada, Imma; Navazo Álvaro, Isabel (2003-01)
      Article
      Restricted access - publisher's policy
      In this paper, the visualization of hybrid scenes that contain volume data and a fitted extracted surface is addressed. The proposed algorithm is based on a integrated octree-based representation: the ‘‘hybrid octree.’’ ...
    • A comparative study of navigation meshes 

      Van Toll, Wouter; Triesscheijn, Roy; Kallmann, Marcello; Oliva Martínez, Ramon; Pelechano Gómez, Núria; Pettré, Julien; Geraerts, Roland (Association for Computing Machinery (ACM), 2017)
      Conference report
      Restricted access - publisher's policy
      A navigation mesh is a representation of a 2D or 3D virtual environment that enables path planning and crowd simulation for walking characters. Various state-of-the-art navigation meshes exist, but there is no standardized ...
    • A framework for rendering, simulation and animation of crowds 

      Pelechano Gómez, Núria; Spanlang, Bernhard; Beacco Porres, Alejandro (2009)
      Conference report
      Restricted access - publisher's policy
      Real-time crowd simulation for virtual environment applications requires not only navigation and locomotion in large environments while avoiding obstacles and agents, but also rendering high quality 3D fully articulated ...
    • A generalized exact arbitrary clearance technique for navigation meshes 

      Oliva Martínez, Ramon; Pelechano Gómez, Núria (ACM, 2013)
      Conference report
      Open Access
      There are two frequent artifacts in crowd simulation, the first one appears when all agents attempt to traverse the navigation mesh sharing the same way point over portals, increasing the probability of collision against ...
    • A hybrid rugosity mesostructure (HRM) for faster rendering of fine haptic detail 

      Theoktisto, Víctor; Fairén González, Marta; Navazo Álvaro, Isabel (2009)
      Conference report
      Restricted access - publisher's policy
      We propose a faster method for surface haptic rendering using image-based Hybrid Rugosity Mesostructures (HRMs), paired maps with per-face height eld displacements and normalmaps, which are layered on top of a much decimated ...
    • A one-dimensional finite element model for human circulatory systems 

      Oks, David; Vázquez, Mariano (Barcelona Supercomputing Center, 2019-05-07)
      Conference report
      Open Access
    • A survey of real-time crowd rendering 

      Beacco Porres, Alejandro; Pelechano Gómez, Núria; Andújar Gran, Carlos Antonio (2016-12)
      Article
      Open Access
      In this survey we review, classify and compare existing approaches for real-time crowd rendering. We first overview character animation techniques, as they are highly tied to crowd rendering performance, and then we analyze ...
    • A virtual reality front-end for city modeling 

      Randó Segura, Eduard; Andújar Gran, Carlos Antonio; Patow, Gustavo Ariel (European Association for Computer Graphics (Eurographics), 2019)
      Conference lecture
      Open Access
      Current tools for city modeling, including those supporting procedural techniques, have a steep learning curve and require substantial user input and/or skills to create realistic 3D models of cities. In this paper we ...
    • Adjusting animation rings to human-like 3D models 

      Ramírez, Jorge E.; Susín Sánchez, Antonio; Lligadas Rodríguez, Xavier (2010)
      Article
      Restricted access - publisher's policy
      In the animation process of a human-like 3D model, a skeleton must be specified to define the model’s surface deformation of its limbs. Nowadays the skeleton specification is hand made and very time consuming task. In ...
    • Affordable immersive projection system for 3d interaction 

      Andújar Gran, Carlos Antonio; Fairén González, Marta; Brunet Crosa, Pere (SIACG, 2002)
      Conference report
      Open Access
      This paper describes an affordable Virtual Reality system designed and developed by a group of researchers at the Polytechnic University of Catalunya (UPC). The system allows direct selection and manipulation of virtual ...
    • An experimental study on the effects of shading in 3D perception of volumetric models 

      Díaz Iriberri, José; Ropinski, Timo; Navazo Álvaro, Isabel; Gobbetti, Enrico; Vázquez Alcocer, Pere Pau (Springer, 2017-01)
      Article
      Restricted access - publisher's policy
      Throughout the years, many shading techniques have been developed to improve the conveying of information in volume visualization. Some of these methods, usually referred to as realistic, are supposed to provide better ...
    • An interactive 3D framework for anatomical education 

      Vázquez Alcocer, Pere Pau; Götzelmann, Timo; Hartmann, Knut; Nürnberger, Andreas (2008-12)
      Article
      Restricted access - publisher's policy
      Object: This paper presents a 3D framework for Anatomy teaching. We are mainly concerned with the proper understanding of human anatomical 3D structures. Materials and methods: The main idea of our approach is taking an ...
    • Analysis of methods for generating octree models of objects from their silhouettes 

      Franquesa Niubó, Marta; Brunet Crosa, Pere (1997-01)
      Article
      Restricted access - publisher's policy
      Reconstructing 3D models from their projection images has been an interesting research topic in computer vision and geometric modeling. In this paper, we review several methods that generate octree models of objects from ...
    • Anisomorphic ray-casting manipulation for interacting with 2D GUIs 

      Andújar Gran, Carlos Antonio; Argelaguet Sanz, Fernando (2007-01)
      Article
      Open Access
      The accommodation of conventional 2D GUIs with virtual environments (VEs) can greatly enhance the possibilities of many VE applications. In this paper we present a variation of the well-known ray-casting technique for fast ...
    • Anotaciones de pruebas de métodos de extracción de Sky View Factor de imágenes ojo de pez con visual a 360° mediante ArcGIS y Rayman 

      García Haro, Alan (2018-11-15)
      External research report
      Open Access
      Este documento presenta los resultados de un ejercicio comparativo de los métodos de extracción del Sky View Factor de fotografías de ojo de pez a 360°, con herramientas de ArcGIS y Rayman. Los resultados representan la ...
    • Aportació als mètodes de seguiment tridimensional d'objectes d'alta velocitat d'operació mitjançant l'estereovisió 

      Aranda López, Juan (Universitat Politècnica de Catalunya, 1997-10-16)
      Doctoral thesis
      Open Access
    • Arquitectura i realitat virtual 

      Carpena Martorell, Judit (Universitat Politècnica de Catalunya, 2021-09-09)
      Bachelor thesis
      Open Access
      El treball final de grau examina el paper que té la Realitat Virtual, amb el software de motor de videojocs Unreal Engine com a eina, per entendre com funciona, les oportunitats que té, les aplicacions reals i actuals al ...