Eurographics Local Chapter Events: Recent submissions

Now showing items 221-240 of 1568

    • Novos Métodos de Design de Iluminação 

      Costa, António Cardoso; Sousa, António Augusto; Ferreira, Fernando Nunes (The Eurographics Association, 2023)
      O design de iluminação ainda é predominantemente baseado em processos empíricos. O utilizador geralmente recorre a métodos numéricos para determinar a solução pretendida, mas não dispõe de ferramentas evoluídas de análise ...

    • Towards Content-Based Retrieval of Technical Orawings through High-Oimensional lndexing 

      Fonseca, Manuel J.; Jorge, Joaquim A. (The Eurographics Association, 2022)
      This paper presents a new approach to classify, index and retrieve technical drawings by content. Our work uses spatial relationships, visual elements and high-dimensional indexing mechanisms to retrieve complex drawings ...

    • Oetermining orientation of Laser scanned surfaces 

      Oliveira, João Fradinho; Steed, Anthony (The Eurographics Association, 2022)
      Real 3D data acquired from scanning technology provide interesting 3D models for research and industrial applications. However before these models can be used, a surface needs to be jitted to a point cloud of an unknown ...

    • Optimal Software-based Projector Alignment 

      Baier, Pablo A. S.; Carvalho, Paulo C. P. (The Eurographics Association, 2022)
      We present a software-based method for alignment of projectors, both for side-by-side (mosaic) and stereo projections. The projectors are assumed to be positioned in such a way that their axes are not perpendicular to the ...

    • Sketching User Interfaces with Visual Patterns 

      Caetano, Anabela; Goulart, Neri; Fonseca, Manuel; Jorge, Joaquim (The Eurographics Association, 2022)
      This paper presents an approach to layout static components of user interfaces as hand-drawn compositions of simple geometric shapes, using sketch recognition and visual languages. The system uses a visual grammar built ...

    • Algorithms for Point-Polygon Collision Oetection in 20 

      Delgado, Juan J. Jiménez; Sánchez, Rafael J. Segura; Higueruela, Francisco R. Feito (The Eurographics Association, 2022)
      ln this article, several algorithms for the collision detection between a point and a polygon on a plane are presented. Coverings by triangles and barycentric coordinates are used. Temporal and geometric coherence are ...

    • 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, ...