Browsing Portuguese Meeting on Computer Graphics 2011 - SIACG 2011 by Issue Date

Now showing items 1-20 of 33

    • 3DWikiU - 3D Wiki For Urban Environments 

      Melo, M.; Silva, P.; Magalhães, L.; Bessa, M.; Coelho, A.; Moura, J.; Rocha, A.; Ferreira, F.; Cruz, J.; Sousa, A. (The Eurographics Association, 2021)
      Virtual Reality (VR) systems may be used with great effectiveness in applications such as urban planning, virtual tourism, cultural heritage and education. In fact, the VR systems allow the visualization and interaction ...

    • Investigating the Differences Between European Portuguese Sounds: An Approach Using Polygonal Mesh Comparison 

      Martins, Paula; Silva, Samuel; Oliveira, Catarina; Ferreira, Carlos; Silva, Augusto; Teixeira, António (The Eurographics Association, 2021)
      With the main purpose of studying the articulatory configuration of the European Portuguese (EP) sounds and to evaluate coarticulatory effects, a large 3D MRI database from several speakers and contexts have been acquired. ...

    • Digital Cartographic Generalization in Spatial Databases: application issues in Power Grids CAD tools 

      Rodríguez, Javier Novo; Pereira, Elena Hernández; Canosa, Mariano Cabrero (The Eurographics Association, 2021)
      This work presents the results of applying several digital cartographic generalization techniques to improve the performance of an Electrical Power Grids Computer-Aided-Design application. The performance increase is ...

    • Graph-Based Reflectance Segmentation 

      Garces, Elena; Gutierrez, Diego; Lopez-Moreno, Jorge (The Eurographics Association, 2021)
      Most of the unsupervised image segmentation algorithms use just RGB color information in order to establish the similarity criteria between pixels in the image. This leads in many cases to a wrong interpretation of the ...

    • Real-Time Modelling and Rendering of Sprayed Concrete 

      Vélez, G.; Matey, L.; Amundarain, A.; Ordás, F.; Marín, J.A. (The Eurographics Association, 2021)
      This paper presents a new real-time method to model and render how sprayed concrete is spread on a surface. The method not only models and renders deposits sprayed from any angle, any distance and with any concrete flow, ...

    • Procedural Modelling of Destructible Materials 

      Gestel, J. van; Bidarra, R. (The Eurographics Association, 2021)
      Traditional content creation for computer games is a costly process. In particular, current techniques for authoring destructible behaviour are often limited to a single object basis. In this paper, we build on previous ...

    • BlenderCAVE: Easy VR Authoring for Multi-Screen Displays 

      Gascón, Jorge; Bayona, José M.; Espadero, José M.; Otaduy, Miguel A. (The Eurographics Association, 2021)
      BlenderCave is a framework for the fast creation of virtual reality applications for multi-screen display systems. It consists of a set of extensions to the open-source Blender Game Engine (BGE), leveraging the scene ...

    • GraphJudge: A System for Assisted Assessment of Computer Graphics Assignments 

      Rocha, Lindomar; Rodrigues, Rui (The Eurographics Association, 2021)
      We describe a system for submission, automated validation and assisted evaluation of Computer Graphics' assignments. This type of assessments has a series of specific challenges associated to it, namely the analysis of ...

    • Interactive Visualizations of Automatic Debugging Reports 

      Riboira, André; Rodrigues, Rui; Abreu, Rui (The Eurographics Association, 2021)
      Automated debugging techniques, based on statistical analysis of historical test executions data, have recently received considerable attention due to their diagnostic capabilities. However, current automatic debugging ...

    • HaloDot: Visualization of the Relevance of Off-Screen Objects 

      Gonçalves, Tiago; Afonso, Ana Paula; Carmo, Maria Beatriz; Pombinho, Paulo (The Eurographics Association, 2021)
      The increasing usage of maps on mobile devices reinforce the need to solve some visualization and usability issues that constraint the user's interaction with information visualization applications. When exploring map ...

    • Efficient Propagation of Light Field Edits 

      Jarabo, Adrian; Masia, Belen; Gutierrez, Diego (The Eurographics Association, 2021)
      Light field editing is a complex task, due to the large amount of data and the need to keep consistency between views. This has hampered the creation of efficient edit propagation methods, similar to those existing for ...

    • A Simple Surface Tracking Method for Physically-Based 3D Water Simulations 

      Amador, G.; Gomes, A. (The Eurographics Association, 2021)
      Water simulation, and more generically fluid simulation, is an important research topic in computer graphics. In 3D Eulerian Navier-Stokes-based water simulations, surface tracking and rendering are two delicate problems. ...

    • Coded Apertures for Defocus Deblurring 

      Masia, Belen; Corrales, Adrian; Presa, Lara; Gutierrez, Diego (The Eurographics Association, 2021)
      The field of computational photography, and in particular the design and implementation of coded apertures, has yielded impressive results in the last years. Among their applications lies defocus deblurring, in which we ...

    • Linear-Time Dynamics of Characters with Stiff Joints 

      Hernández, Fernando; Garre, Carlos; Casillas, Rubén; Otaduy, Miguel A. (The Eurographics Association, 2021)
      Characters, like other articulated objects and structures, are typically simulated using articulated dynamics algorithms. There are efficient linear-time algorithms for the simulation of open-chain articulated bodies, but ...

    • Robust Method for Estimating Normals on Point Clouds Using Adaptive Neighborhood Size 

      Leal, E.A.; Leal, N.E. (The Eurographics Association, 2021)
      Normal estimation on sampled curves or surfaces is a basic step of many algorithms in computer graphics, computer vision, and especially in recognition and reconstruction of three dimensional objects. This paper presents ...

    • Neural Data Exploration with Force Feedback 

      Raya, Laura; Otaduy, Miguel A.; García, Marcos (The Eurographics Association, 2021)
      The behavior of the brain depends to a large extend on its neural structure. Therefore, understanding this neural topology is a high-priority research line for neurobiologists. Due to complexity of the brain's neural ...

    • Non-Uniform Spherical Light Fields 

      Blasco, J.; Abad, F.; Camahort, E.; Vivó, R. (The Eurographics Association, 2021)
      The study of the light field, as a function defining the radiance along the different viewing directions of a scene, started more than a decade ago and is still ongoing due to its interesting applications. Among the different ...

    • Inexpensive 3D Stereo for Two Users Using a Single Display 

      Re, Armando de la; Martorell, Eduardo; Camahort, Emilio; Abad, Francisco (The Eurographics Association, 2021)
      Multiuser computer systems allow several users to collaborate on the same task. Medium sized displays, like workbenches or tabletops provide a shared view of the task and a set of input devices to interface with the system. ...

    • GPU Collision Detection in Conformal Geometric Space 

      Roa, Eduardo; Theoktisto, Víctor; Fairén, Marta; Navazo, Isabel (The Eurographics Association, 2021)
      We derive a conformal algebra treatment unifying all types of collisions among points, vectors, areas (defined by bivectors and trivectors) and 3D solid objects (defined by trivectors and quadvectors), based in a reformulation ...

    • Interactive Elastic Deformation of 3D Images 

      Prados, Francisco J. R.; Salas, Alejandro León; Torres, Juan Carlos (The Eurographics Association, 2021)
      The standard workflow of a haptic device takes the position of the effector in space and sends a force vector in return. This paradigm naturally meets the behaviour shown in elastic materials, where the resistant force of ...