Ara es mostren els items 1-20 de 531

    • 3D model deformations with arbitrary control points 

      Cerveró Abelló, Maria Àngels; Vinacua Pla, Álvaro; Brunet Crosa, Pere (2016-06-01)
      Article
      Accés obert
      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 pore analysis of sedimentary rocks 

      Vergés Garcia, Eduard; Tost Pardell, Daniela; Ayala Vallespí, M. Dolors; Ramos Guerrero, Emilio; Grau Carrión, Sergi (2010)
      Report de recerca
      Accés obert
      A 3D representation of the internal structure and fabric of sedimentary rocks is of paramount interest to evaluate their structural parameters such as porosity, pore-size distribution and permeability. The classical ...
    • 3D printer electronics design 

      Cañete Vela, Isabel (Universitat Politècnica de Catalunya, 2014-06)
      Treball Final de Grau
      Accés obert
      Nowadays, RepRap and Arduino communities have had an increasing progress. These terms are demarcated on the Open Source development model; the designs produced by these projects are released under the GNU General Public ...
    • 3D simulation of tool machining 

      Puig Puig, Anna; Pérez Vidal, Lluís; Tost Pardell, Daniela (2001-12)
      Report de recerca
      Accés obert
      This paper describes a three-dimensional tool machining simulation system. The initial tool and the grinding wheels are integrated with the machine-tool. The application reads and interprets the CNC program code that ...
    • 3D texture-based hybrid visualizations 

      Boada, Imma; Navazo Álvaro, Isabel (2003-01)
      Article
      Accés restringit per política de l'editorial
      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.’’ ...
    • 3D triangular mesh to represent the left ventricle volume of the heart 

      Rodriguez, Lyudmila; Navazo Álvaro, Isabel; Vinacua Pla, Álvaro (2002-07-01)
      Report de recerca
      Accés obert
      This report describes an algorithm for the generation of unstructured tetrahedral meshes from two triangular meshes: the internal and external walls of an object. The tetrahedral mesh thus obtained represents the volume ...
    • A Brief on constraint solving 

      Hoffmann, Christoph M.; Joan Arinyo, Robert (2004-10-08)
      Report de recerca
      Accés obert
      We survey the current state of the art in geometric constraint solving. Both 2D and 3D constraint solving is considered, and different approaches are characterized.
    • 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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 cost-effective approach for developing application-control GUIs for virtual environments 

      Andújar Gran, Carlos Antonio; Fairén González, Marta; Argelaguet Sanz, Fernando (2006-03)
      Comunicació de congrés
      Accés obert
      In this paper we present a new approach for fast development of application-control User Interfaces (UIs) for Virtual Environments (VEs). Our approach allows developers to build sophisticated UIs containing both simple ...
    • A Framework for animation in global illumination environments 

      Martín Campos, Ignacio Clemente; Pueyo, X; Tost Pardell, Daniela (1998-06)
      Text en actes de congrés
      Accés obert
      This paper proposes a framework for the production of animations of high quality radiosity environments which makes use of the a-priori knowledge of the dynamic properties of the scene in order to exploit temporal ...
    • A framework for network traffic analysis using GPUs 

      Suñé Clos, Marc (Universitat Politècnica de Catalunya, 2010-01)
      Projecte/Treball Final de Carrera
      Accés obert
      During the last years the computer networks have become an important part of our society. Networks have kept growing in size and complexity, making more complex its management and traffic monitoring and analysis processes, ...
    • A framework for real-time physically-based hair rendering 

      Gonzalez Jimenez, Santi (Universitat Politècnica de Catalunya, 2022-06-28)
      Projecte Final de Màster Oficial
      Accés obert
      Realitzat a/amb:   Universitat Pompeu Fabra
      Hair rendering has been a major challenge in computer graphics for several years due to the complex light interactions involved. Complexity mainly stems from two aspects: the number of hair strands, and the resulting ...
    • A framework for rendering, simulation and animation of crowds 

      Pelechano Gómez, Núria; Spanlang, Bernhard; Beacco Porres, Alejandro (2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 general illumination model for molecular visualization 

      Hermosilla Casajús, Pedro; Vázquez Alcocer, Pere Pau; Vinacua Pla, Álvaro; Ropinski, Timo (2018-06)
      Article
      Accés obert
      Several visual representations have been developed over the years to visualize molecular structures, and to enable a better understanding of their underlying chemical processes. Today, the most frequently used atom-based ...
    • A generalized exact arbitrary clearance technique for navigation meshes 

      Oliva Martínez, Ramon; Pelechano Gómez, Núria (ACM, 2013)
      Text en actes de congrés
      Accés obert
      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 Geometric relaxation solver for parametric constraint-based models 

      Solano Albajés, Lluís; Brunet Crosa, Pere (1998-06)
      Report de recerca
      Accés obert
      In this paper, a new relaxation algorithm for solving geometric constraint-based models is proposed. The algorithm starts from a constructive symbolic representation of objects (Constructive ...
    • A Global algorithm for linear radiosity 

      Sbert Cassasayas, Mateu; Pueyo Sánchez, Xavier (1993-11)
      Report de recerca
      Accés obert
      A linear algorithm for radiosity is presented, linear both in time and storage. The new algorithm is based on previous work by the authors and on the well known algorithms for progressive radiosity and Monte Carlo particle ...
    • A Hybrid client-server based technique for navigation in large terrains using mobile devices 

      Noguera, José María; Segura Sánchez, Rafael Jesús; Ogáyar, Carlos; Joan Arinyo, Robert (2010-01)
      Report de recerca
      Accés obert
      We describe a hybrid client-server technique for remote adaptive streaming and rendering of large terrains in resource-limited mobile devices. The technique has been designed to achieve an interactive rendering performance ...
    • A hybrid rugosity mesostructure (HRM) for faster rendering of fine haptic detail 

      Theoktisto, Víctor; Fairén González, Marta; Navazo Álvaro, Isabel (2009)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 hybrid rugosity mesostructure (HRM) for rendering fine haptic detail 

      Theoktisto Colmenares, Victor Arturo; Fairén González, Marta; Navazo Álvaro, Isabel (2009-02)
      Report de recerca
      Accés obert
      The haptic rendering of surface mesostructure (fine relief features) in dense triangle meshes requires special structures, equipment, and high sampling rates for detailed perception of rugged models. Some approaches simulate ...