Browsing Eurographics Local Chapter Events by Title

Now showing items 1112-1131 of 1568

    • "Qual Peça? Identificação de Métodos Naturais para a Descricção de Objectos 3D " 

      Mendes, Daniel; Henriques, Diogo; Trancoso, Isabel; Ferreira, Alfredo (The Eurographics Association, 2020)
      O número de objectos tridimensionais em formato digital tem aumentado consideravelmente nos últimos anos. Com este aumento, intensifica-se o desafio de encontrar um objecto específico em colecções cada vez maiores, de forma ...

    • Qualidade Medida vs. Qualidade Percebida em Malhas Triangulares dos Pulmões 

      Silva, Samuel; Madeira, Joaquim; Ferreira, Carlos; Santos, Beatriz Sousa (The Eurographics Association, 2021)
      Em diversas áreas de aplicação, a simplificação das malhas poligonais usadas para representar os modelos, ao diminuir a sua complexidade, constitui uma possível solução para permitir a sua utilização interactiva. Em geral, ...

    • RameshCleaner: Conservative Fixing of Triangular Meshes 

      Centin, Marco; Signoroni, Alberto (The Eurographics Association, 2015)
      In this work, after a careful examination of the most common errors and flaws which typically occur in meshes produced by 3D scanning processes, we propose a set of fixing tools which solve effectively several important ...

    • Ramses: a Visual Steganographic System 

      Battiato, S.; Blasi, G. Di; Gallo, G.; Patti, S. (The Eurographics Association, 2007)
      Steganography is the art of "secret communication". Its goal is to transmit a message (information) hidden inside another visible message. The typical visible message used in many steganographic systems is a digital image ...

    • Rasterização Concorrente por Fluxo de Linhas: Um novo Algoritmo por Composição de Imagem 

      Pereira, João Madeiras; Gomes, Mário Rui (The Eurographics Association, 2023)
      Este artigo descreve a implementação de um algoritmo gráfico em multiprocessadores de uso-geral com comunicação por mensagens (designados vulgarmente por multicomputadores) por forma a explorar uma forma de paralelismo de ...

    • Rato versus joystick como dispositivo de entrada para navegação num ambiente virtual com um Head-Mounted Device 

      Dias, Paulo; Santos, Paulo; Ferreira, Carlos; Santos, Beatriz Sousa (The Eurographics Association, 2021)
      Este artigo apresenta uma experiência controlada realizada para comparar dois dispositivos comuns, um rato e um joystick, como dispositivos de entrada durante a navegação num Ambiente Virtual constituído por um labirinto ...

    • Ray Reordering Techniques for GPU Ray-Cast Ambient Occlusion 

      Costa, Vasco; Pereira, João Madeiras; Jorge, Joaquim A. (The Eurographics Association, 2020)
      Global illumination techniques, such as ambient occlusion, can be performed in a physically accurate way via ray casting. However ambient occlusion rays are incoherent. This means their computation is divergent causing a ...

    • Ray Tracing of Large Models on a Multi-Projection Display 

      Costa, Vasco; Pereira, João M.; Jorge, Joaquim A. (The Eurographics Association, 2021)
      O uso de écrans de grande dimensão, no nosso caso uma 'display wall' multi-projector, tem vindo a aumentar. Quando vários utilizadores precisam de visualizar uma cena ou quando um único utilizador necessita de obter uma ...

    • Ray-Tracing Controlavel Interactivamente para producao de Imagens de realismo crescente 

      Sousa, A. Augusto; Costa, A. Cardoso; Leitão, João Miguel; Ferreira, F. Nunes (The Eurographics Association, 2023)
      A geração de imagens com elevado nível de realismo por meio de um algoritmo de Ray-Tracing convencional. em sistemas de CAD, está totalmente fora de questão se considerarmos os requisitos ao nível da interactividade na ...

    • Reabilitar o Processo de Reabilitação 

      Gama, Teresa; Guerreiro, Tiago; Nicolau, Hugo; Jorge, Joaquim (The Eurographics Association, 2021)
      O processo de reabilitação actual caracteriza-se pela sua longa duração e natureza desmotivante. Porém, é uma actividade indispensável para a recuperação de pacientes tetraplégicos. O objectivo deste trabalho é tornar a ...

    • Real Positioning in Virtual Environments Using Game Engines 

      Chiara, Rosario De; Santo, Valentina Di; Erra, Ugo; Scarano, Vittorio (The Eurographics Association, 2007)
      Immersive virtual environments offer a natural setting for educational and instructive experiences for users, and game engine technology offers an interesting, cost-effective and efficient solution for building them. In ...

    • Real-Time Animation of Particles and Seaweeds in Underwater Scenes 

      Coulais, Y.; Ghazanfarpour, D.; Terraz, O.; Thon, S. (The Eurographics Association, 2005)
      Water is one of the most important natural phenomena to be rendered in computer graphics. Although ocean waves animation has been well studied in Computer graphics, only few studies have been done for underwater animation. ...

    • Real-time Cataract Surgery Simulation for Training 

      Agus, M.; Gobbetti, E.; Pintore, G.; Zanetti, G.; Zorcolo, A. (The Eurographics Association, 2006)
      Cataract is a clouding of the eye's natural lens, normally due to natural aging changes, and involving at least half of the population over 65 years. Cataract extraction is the only solution for restoring a clear vision, ...

    • Real-Time Exploration of the Virtual Reconstruction of the Entrance of the Ripoll Monastery 

      Besora, Isaac; Brunet, Pere; Chica, Antoni; Morales, Daniel; Moyes, Jordi (The Eurographics Association, 2008)
      This paper presents the project of the virtual reconstruction and inspection of the "Portalada", the entrance of the Ripoll Monastery. In a first step, the monument of 7 x 11 meters was acquired using triangulation laser ...

    • Real-time Fluid Simulation Coupled with Cloth 

      Harada, Takahiro; Koshizuka, Seiichi; Kawaguchi, Yoichiro (The Eurographics Association, 2007)
      This paper presents a real-time simulation method for coupling of cloth and fluids computed by using Smoothed Particle Hydrodynamics (SPH). To compute interaction between cloth consisting of several polygons and fluid ...

    • Real-time Indexing of Point Cloud Data During LiDAR Capture 

      Bormann, Pascal; Dorra, Tobias; Stahl, Bastian; Fellner, Dieter W. (The Eurographics Association, 2022)
      We introduce a software system that is capable of indexing point cloud data in real-time as it is being captured by a LiDAR (Light Detection and Ranging) sensor. Our system extends the popular MNO (modifiable nested octree) ...

    • Real-time Inextensible Hair with Volume and Shape 

      Sánchez-Banderas, Rosa María; Barreiro, Héctor; García-Fernández, Ignacio; Pérez, Mariano (The Eurographics Association, 2015)
      Hair simulation is a common topic extensively studied in computer graphics. One of the many challenges in this field is simulating realistic hair in a real-time environment. In this paper, we propose a unified simulation ...

    • 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, ...

    • Real-Time Modelling of the Action of Wind on Liquid Surfaces 

      Bristol, Amanda; Varsamidis, Thomas (The Eurographics Association, 2006)
      This work in progress aims to model the appearance of the surface of various liquids, when force from a virtual wind is applied. The physical effects caused by a wind force include waves and spray. The appearance of these ...

    • Real-time Rendering of Deformable Translucent Objects 

      Benmounah, Nadir; Jolivet, Vincent; Ghazanfarpour, Djamchid (The Eurographics Association, 2009)
      This paper introduces an efficient real-time shading model to simulate light transport in translucent materials. In this work no pre-processing step is needed, allowing us to deform translucent objects at interactive rates. ...