Now showing items 484-503 of 1568

    • Experiências com Ray Tracing. Necessidade de Arquitecturas Paralelas 

      Costa, A. Cardoso; Sousa, A. A.; Ferreira, F. Nunes (The Eurographics Association, 2023)
      O Ray Tracing e a Radiosity são as técnicas de síntese de imagens que, na actualidade, produzem imagens com maior grau de realismo. Um sistema CAD dotado com estas técnicas poderá ser de grande utilidade numa empresa, quer ...
    • An Experimental Setup to Evaluate the Performance of Tone Mapping Algorithms 

      Marsi, S.; Impoco, G.; Ukovich, A.; Ramponi, G. (The Eurographics Association, 2006)
      Many algorithms have been proposed in the literature to solve the problem of mapping tones from high dynamic range sources to low dynamics displays, while preserving the information conveyed by the original scene. Methods ...
    • Explaining Neighborhood Preservation for Multidimensional Projections 

      Martins, Rafael Messias; Minghim, Rosane; Telea, Alexandru C. (The Eurographics Association, 2015)
      Dimensionality reduction techniques are the tools of choice for exploring high-dimensional datasets by means of low-dimensional projections. However, even state-of-the-art projection methods fail, up to various degrees, ...
    • Explicit Adaptive Tessellation based on re-parametrization on Graphics Hardware 

      Martinelli, Alessandro (The Eurographics Association, 2007)
      We propose to use an explicit function for adaptive tessellation of parametric curves and surfaces. This function behaves as a new parametrization from the surface domain (or curve domain) to the domain itself; it is build ...
    • Exploiting Silhouette Descriptors and Synthetic Data for Hand Gesture Recognition 

      Memo, Alvise; Minto, Ludovico; Zanuttigh, Pietro (The Eurographics Association, 2015)
      This paper proposes a novel real-time hand gesture recognition scheme explicitly targeted to depth data. The hand silhouette is firstly extracted from the acquired data and then two ad-hoc feature sets are computed from ...
    • Exploração da Remoção Hierárquica por Oclusão em Simulações em Tempo Real 

      Cunha, Vitor; Leitão, Miguel (The Eurographics Association, 2021)
      As aplicacoes de simulacao grafica em tempo real podem apresentar um fraco desempenho devido a complexi­dade de ambientes virtuais de muito grandes dimensoes. Um exemplo ea simulacao de conducao em ambientes urbanos onde ...
    • Exploração e Visualização de Informação Pessoal 

      Gomes, Paulo; Gama, Sandra; Gonçalves, Daniel (The Eurographics Association, 2021)
      Hoje em dia, a constante interacção com sistemas computacionais faz com que seja gerada uma elevada quantidade de informação pessoal. Contudo, é difícil termos uma vis˜ao global dos nossos dados e encontrar padr˜oes na ...
    • Exploração Interactiva de Colecções Musicais usando Treemaps Ordenados Semanticamente 

      Dias, Ricardo; Fonseca, Manuel J. (The Eurographics Association, 2021)
      Neste artigo apresentamos o MuVis, uma nova abordagem para visualização e exploração interactiva de colecções de música, com base no conteúdo musical e informação semˆantica. A solução desenvolvida é constituída por três ...
    • Exploração Interactiva dos Hábitos de Audição de Música 

      Dias, Ricardo; Fonseca, Manuel J.; Gonçalves, Daniel (The Eurographics Association, 2021)
      Devido `a expansão da Internet é comum as pessoas utilizarem servic¸os online para registarem detalhes acerca das suas vidas, tais como os hábitos de audição de músicas. Embora estes serviços disponibilizem alguns dados ...
    • Exploring Face Recognition under Complex Lighting Conditions with HDR Imaging 

      Ige, Emmanuel O.; Debattista, Kurt; Muhkerjee, Ratnajit; Chalmers, Alan (The Eurographics Association, 2016)
      Applying image processing applications under complex or harsh lighting conditions can be a difficult challenge. In particular, face recognition can be prone to such limitations due to the uncontrolled nature of the ...
    • Exploring Language Pedagogy with Virtual Reality and Artificial Intelligence 

      Michael, Brandon; Aburumman, Nadine (The Eurographics Association, 2023)
      Virtual Reality (VR) is a highly immersive and interactive experience that renders users to be engrossed in a 3D virtual environment. The recent technological advancements with high-resolution headset display, and accurate ...
    • Exploring Upper Limb Segmentation with Deep Learning for Augmented Virtuality 

      Gruosso, Monica; Capece, Nicola; Erra, Ugo (The Eurographics Association, 2021)
      Sense of presence, immersion, and body ownership are among the main challenges concerning Virtual Reality (VR) and freehand-based interaction methods. Through specific hand tracking devices, freehand-based methods can allow ...
    • Expressive and Dynamic Deformation of Animated Computer-Generated Characters 

      Noble, Paul; Tang, Wen (The Eurographics Association, 2006)
      3D computer animated characters often lack the communicative power and the expressiveness of traditional animation, especially when used in non-photorealistic graphical representations. Inspired by a talk by Pixar Animation ...
    • Extended Reality (XR) Immersive Visualisation: Identifying AI project member 'needs' in order to design for a more effective Low-Code Machine Learning Model Development experience 

      Wheeler, Richard; Carroll, Fiona (The Eurographics Association, 2022)
      With organisations making machine learning projects more of a priority, issues have been found regarding the presentation of these types of projects and in particular, in explaining how the models that are produced work, ...
    • Extending Industrial Digital Twins with Optical Object Tracking 

      Tammaro, Antonio; Segura, Álvaro; Moreno, Aitor; Sánchez, Jairo R. (The Eurographics Association, 2017)
      In the last year, the concept of Industry 4.0 and smart factories has increasingly gained more importance. One of the central aspects of this innovation is the coupling of physical systems with a corresponding virtual ...
    • Extending the Scaffold Hunter Visualization Toolkit with Interactive Heatmaps 

      Sturm, Werner; Schäfer, Till; Schreck, Tobias; Holzinger, Andreas; Ullrich, Torsten (The Eurographics Association, 2015)
      In many application areas, large amounts of data arise, which are often hard to interpret or make use of by humans. Interactive visualization can help to overview and explore large amounts of data. An example is in the ...
    • Extracción Adaptativa de Isosuperficies Topológicamente Correctas 

      Soler, Francisco; Velasco, Francisco; Torres, Juan Carlos; León, Alejandro (The Eurographics Association, 2009)
      Este trabajo propone un nuevo esquema de representación de volúmenes basado en una partición del espacio en poliedros multirresolución, y un método de extracción de isosuperficies sin elementos no-variedad a partir del ...
    • Extracting Ordered Iso-Geodesic Points on the Mesh 

      Tortorici, Claudio; Werghi, Naoufel; Berretti, Stefano (The Eurographics Association, 2020)
      The mesh manifold is one of the most used modalities for representing 3D objects. Although it provides a fully connected not oriented structure, it has some drawback when compared to the grid of pixels of a still image. ...
    • Extração de informação de texto formal para a modelação expedita de edifícios monumentais 

      Baptista, Ricardo; Rodrigues, Roberto; Coelho, António; Reis, Luís Paulo; Sousa, Augusto; Magalhães, Luís (The Eurographics Association, 2021)
      A extração de informação a partir de descrições textuais para a modelação procedimental de ambientes urbanos é apresentada com solução para os edifícios antigos. No entanto, este tipo de edifício carece de maior cuidado ...
    • Faces – Biblioteca de Expressões Faciais 

      Faustino, Janete; Cláudio, Ana Paula; Carmo, Maria Beatriz (The Eurographics Association, 2021)
      A utilização de humanos virtuais inteligentes tem vindo a tornar-se habitual em diversos contextos que combinam contribuições de várias disciplinas, nomeadamente, da Computação Gráfica, da Inteligência Artificial e das ...