Portuguese Chapter Conference: Recent submissions

Now showing items 181-200 of 616

    • Hoops Fusion: Synthesis of View-dependent Convex Occluders from a Set of Objects 

      Ríos, Àlex; Navazo, Isabel (The Eurographics Association, 2022)
      Visibility determination is a requirement to navigate through complex scenes. Occluder fusion algorithms generate convex occluders that are contained in the umbra cast by a group of objects given an area light. Hoops are ...

    • Marching Edges: A Method for lsosurface Extraction 

      Velasco, Francisco; Torres, Juan Carlos; Cano, Pedro (The Eurographics Association, 2022)
      Volumetric data can be represented as a rectilinear structured grid and can be displayed by the rendering of an isosurface that is built from the grid and defining a threshold value. The know marching cubes method builds ...

    • 30 Texture-based Hybrid Visualízations 

      Soada, lmma; Navazo, Isabel (The Eurographics Association, 2022)
      ln this paper the visualization of hybrid scenes that contain volume data anda fitted extracted surface is addressed. The proposed algorithm is based on a integrated octree-based representation: the "Hybrid Octree ". The ...

    • Visualization Techniques in a Building Potential Simulator Using Sunlíght Access Con 

      Grazziotin, Pablo Colossi; Freitas, Carla M. Dai Sasso; Turkienicz, Benamy; Pereira, Fernando O. Ruttkay (The Eurographics Association, 2022)
      This paper presents the use of a technique known as solar envelope in the simulation of building potential of urban plots as well as the improvement of 2D and 3D visualization techniques of simulation results. The consideration ...

    • Simulating E-Garments Oressed on Personalísed Avatars 

      Dias, José Miguel Salles; González, David Muifíos; Gamito, Manuel Noronha (The Eurographics Association, 2022)
      We present a general computational architecture that solves the problem of the production of physical-based virtual textiles and garments (so called electronic garments or e-garments), applicable in lnternet-based ...

    • Virtual Reality in Cooperative Teleoperation 

      Rodriguez, Aura Nancy; Jessel, Jean-Pierre; Torguet, Patrice (The Eurographics Association, 2022)
      Virtual reality enables to build systems that enhance communication by facilitating information display. ln teleoperation applications, virtual reality improves task performance thanks to intuitive manipulation and exploration ...

    • Towards Fully Reconfígurable Multimedia Platforms 

      Poz, Marco A. S. Dai; Leitão, Ricardo B. Vidigal; Faria, Regis Rossi Alves; Lopes, Roseli de Deus; Zuffo, Marcelo Knörich (The Eurographics Association, 2022)
      This paper describes a novel approach to implement multimedia access platforms: reconfigurable oriented codesign. Nowadays we observe a rapid and mutant evolution of multimedia standards and its de facto adoption into many ...

    • Direct Modelíng: from Sketches to 3D Models 

      Naya, Fernando; Jorge, Joaquim A.; Conesa, Julián; Contera, Manuel; Gomis, José Maria (The Eurographics Association, 2022)
      ln spite of recent advances in Computer Aided Design, Graphical User Interfaces (GUJ) are, by and large, still at the stage of the so-called WIMP (Window, Icon, Menu, Pointing device) approach. ln recent years, our research ...

    • A Density Estimation Technique for Radiosity 

      Lastra, Miguel; Urefía, Carlos; Revelles, Jorge; Montes, Rosana (The Eurographics Association, 2022)
      Radiosity computation on scenes including objects with a complex geometry, or with a large number of faces and meshes with very different sizes, is very complex. We presenta new method (based on the Photon Maps method [7]) ...

    • Powering Multiprojection lmmersive Environments with Clusters of Commodity Computers 

      Soares, Luciano Pereira; Cabral, Márcio Calixto; Bressan, Paulo Alexandre; Lopes, Roseli de Deus; Zuffo, Marcelo Knörich (The Eurographics Association, 2022)
      Multiprojection lmmersive Environments are used in many fields such as science, engineering and art. Virtual Reality (VR) oriented systems have been powered traditionally by high-end graphics workstations or supercomputers ...

    • Free-Form Solid Modellíng Based on Extended Simplícial Chains Using Triangular Bézier Patches 

      García, Ángel Luis; Miras, Juan Ruiz de; Feito, Francisco R. (The Eurographics Association, 2022)
      We present a mathematical model for geometric modelling based on the concept of extended simplicial chain (ESC) defined in previous works. With this model, a solid is defined by means of an algebraic sum of nondisjoint ...

    • Surface Collision Detection for Maintenance Support in Virtual Environments 

      Marcelino, Luis; Figueiredo, Mauro; Fernando, Terrence (The Eurographics Association, 2022)
      Detecting collision between surfaces is an important feature for supporting interactive assembly operations based on the geometric constraint-based simulation. CAD models define the geometry of components using surfaces ...

    • A Virtual Collaborative Learning Environment 

      Ficheman, Irene Karaguilla; Lopes, Roseli de Deus; Krüger, Susana Ester (The Eurographics Association, 2022)
      This paper presents a virtual learning environment developed for music education and includes both individual and collaborative interactive environments. This learning environment is a music composition edutainment software, ...

    • MIXDesign, Tangible Mixed Reality for Architectural Design 

      Salles Dias, J. Miguel; Santos, Pedro; Bastos, Rafael; Monteiro, Luis; Silvestre, Rui; Diniz, Nancy (The Eurographics Association, 2022)
      MIXDesign, provides a tangible Mixed-Reality system oriented towards tasks in Architectural Design, in severa! usage scenarios, such as Conceptual Design, Client Brief or even Architectural Design education. With MIXDesign, ...

    • A Constraint Manager to Support Virtual Maintainability 

      Marcelino, Luis; Murray, Norman; Fernando, Terrence (The Eurographics Association, 2022)
      Virtual prototyping tools have already captivated the industry's interest as a viable design tool. One of the key challenges for the research community is to extend the capabilities of Virtual Reality technology beyond its ...

    • Case study: full-size virtual models of trains 

      Serón, Francisco José; Gutiérrez, Diego; Magallón, Juan Antonio; Sobreviela, Emilio José; Gutiérrez, José Antonio (The Eurographics Association, 2022)
      Simulation of models, in all different areas, is an expanding, attractive fine ofwork. More and more applications are taking advantage of the improving technology and knowledge in this field, achieving results that would ...

    • INTERCOMUNICANDO - Computer Assisted Communication for Severely Handicapped Persons 

      Lopes, João Brisson; Amaro, Ricardo; Pereira, António (The Eurographics Association, 2022)
      This paper presents project INTERCOMUNICANDO whose aim is to provide computer assisted pictogram based communication as a rehabilitation toolfor severely handicapped persons. The project developed a suite of integrated ...

    • Proceedings Info 

      Xavier Pueyo; Manuel Próspero dos Santos; Luiz Velho (The Eurographics Association, 2022)

    • Jogos de Guerra e Paz 

      Batista, Helder; Costa, Vasco; Pereira, João (The Eurographics Association, 2022)
      A simulação de ambientes virtuais realistas de grande complexidade e interactividade é um problema complexo a vários níveis. Na parte de visualização as dificuldades prendem-se com as limitações do hardware para apresentar ...

    • ARENA and WOXBOT: Some Steps towards the Animation of Cognitive Characters Acting in a Virtual World 

      Miranda, Fábio R.; Kögler Junior, J.; Lobo Netto, Márcio; Hernandez, E. Del Moral (The Eurographics Association, 2022)
      This paper reports some of the results of the WOXBOT / ARENA project on artificial life. This project to build virtual worlds was set initially aimed at the graphic simulation of an arena where WoxBots, small mobile robots, ...