Now showing items 21-40 of 736

    • Fast Simulation of Facial Tissue Deformations Using Mass-Spring Chain Algorithm 

      Duysak, A.; Zhang, J. J. (The Eurographics Association, 2005)
      We propose a method to develop a unique head model to be used in craniofacial surgery simulations. This method considers the shape of the head and skull structure and provides a polygonal model, which includes different ...
    • Simulating the Cumulative Effects of Multiple Impacts using 'Fracture Maps' 

      Clifton, T. (The Eurographics Association, 2005)
      Abstract Much research has been carried out within the computer graphics community to simulate the effects of collisions between deformable and rigid bodies, but little has been proposed to take into account the effects ...
    • Augmented Reality Scenarios for Guitar Learning 

      Liarokapis, F. (The Eurographics Association, 2005)
      In this paper, an experimental self-teaching system capable of superimposing audio-visual information to support the process of learning to play the guitar is proposed. Different learning scenarios have been carefully ...
    • VRECKO: Virtual Reality Framework 

      Flasar, Jan; Pokluda, Ludek; O lej ek, Radek; Kolcárek, Pavel; Sochor, Jirí (The Eurographics Association, 2005)
      In this paper, we present a framework for experimenting with virtual environments. The architecture of the system VRECKO is designed for the rapid prototyping of techniques for human-computer interaction. The architecture ...
    • Implementing FastMap on the GPU: Considerations on General-Purpose Computation on Graphics Hardware 

      Reina, G.; Ertl, Thomas (The Eurographics Association, 2005)
      In this paper we focus on the implications of implementing generic algorithms on graphics hardware. As an example, we ported the dimensionality reduction algorithm FastMap to fragment programs and thus accelerated it by ...
    • Perlin Noise and 2D Second-Order Tensor Field Visualization 

      Liu, J.; Perrin, J.; Turner, M.; Hewitt, W. T. (The Eurographics Association, 2005)
      There has been much research in the use of texture for visulization the vector field data, whereas there has only been a few papers concerned specifically with tensor field data. This set is more complex and embeds more ...
    • Virtual Sculpting Using Implicit Surfaces with Scattered Data Interpolation 

      Zhang, K.; Noble, R. A.; McDermott, R. J.; Wilson, A. (The Eurographics Association, 2005)
      This paper presents a virtual sculpting system that shows an approach to the interactive deformation of soft objects. The soft objects are represented by implicit surfaces which are visualized using a constrained particle ...
    • Adaptive trimming of cubic triangular Bézier patches 

      García, Ángel Luis; Miras, Juan Ruiz de; Feito, Francisco R. (The Eurographics Association, 2006)
      We present a method to handle cubic trimmed triangular Bézier patches. This scheme makes use of levels of detail and surface subdivision to achieve a fast and flexible hierarchical data structure that is specially useful ...
    • Automatic architectural 3D model generation with sunlight simulation 

      Mas, Albert; Besuievsky, Gonzalo (The Eurographics Association, 2006)
      Nowadays, 2D architectural design is provided with many good tools. But it lacks efficient tools that could help designers in early stages of a project for tasks such as virtual prototyping or 3D model simulation. The 3D ...
    • Coherent Hierarchical Level-of-Detail (HLOD) Refinement Through Hardware Occlusion Queries 

      Charalambos, Jean Pierre (The Eurographics Association, 2006)
      We present a coherent hierarchical level of detail (HLOD) culling algorithm that employs a novel metric to perform the refinement of a HLOD-based system that takes into account visibility information. The information is ...
    • Perceived Quality of Simplified Polygonal Meshes: Evaluation using Observer Studies 

      Silva, Samuel; Ferreira, Carlos; Madeira, Joaquim; Santos, Beatriz Sousa (The Eurographics Association, 2006)
      The complexity of a polygonal mesh model is usually reduced by applying a simplification method, resulting in a similar mesh having less vertices and faces. Although several such methods have been developed, it is not yet ...
    • Kit Assembly Helper in Augmented Reality 

      Almeida, Miguel Vieira; Dias, Jose Miguel Sales (The Eurographics Association, 2006)
      This paper describes an augmented reality application that aids users in assembling an object originally in a kit format, i.e. the object is received unassembled, with ordered instructions steps on how to connect each ...
    • Skin Detection for Hand Gesture Interfaces using Assimilative Background 

      Santurde, Jokin; Borro, Diego; Matey, Luis M. (The Eurographics Association, 2006)
      This paper describes the study realized about hand movement capture systems oriented to gesture interfaces. Thanks to this study we have developed a skin colour based hand detection application. The state of the art already ...
    • Perception-based painterly rendering: functionality and interface design 

      Nunes, Samuel; Almeida, Daniel; Brito, Vera; Carvalho, Joao; Rodrigues, Joao; Buf, J. M. Hans du (The Eurographics Association, 2006)
      Painterly rendering (non-photorealistic rendering or NPR) aims at translating photographs into paintings with discrete brush strokes, simulating certain techniques (im- or expressionism) and media (oil or watercolour). ...
    • Grid Architecture for Distributed Rendering 

      Fernández-Sorribes, Jose Antonio; González-Morcillo, Carlos; Jiménez-Linares, Luis (The Eurographics Association, 2006)
      Rendering is the process by means of which a raster 2D image can be obtained from the definition of a 3D scene. This process is computationally intensive and requires a lot of time to be done when the source scene has ...
    • Transferring Facial Expressions to Different Face Models 

      Orvalho, V. Costa Teixeira; Zacur, Ernesto; Susín, Antonio (The Eurographics Association, 2006)
      We introduce a facial deformation system that helps the character setup process and gives artists the possibility to manipulate models as if they were using a puppet. The method uses a set of labels that define specific ...
    • Individualizing the New Interfaces: Extraction of User's Emotions from Facial Data 

      Hupont, Isabelle; Cerezo, Eva (The Eurographics Association, 2006)
      When developing new multimodal user interfaces emotional user information may be of great interest. In this paper we present a simple and computationally feasible method to perform automatic emotional classification of ...
    • Efficient focus+context visual exploration of volume datasets 

      Campos, Jordi; Puig, Anna; Tost, Dani (The Eurographics Association, 2006)
      We propose a hierarchical representation of volume data sets based on a user-given definition of features. The model is general and it can be used for various types of feature definitions such as rendering queries, topological ...
    • GPU-based Evaluation of Boolean Operations on Triangulated Solids 

      Ogayar, Carlos Javier; Feito, Francisco R.; Segura, Rafael J.; Rivero, Marilina (The Eurographics Association, 2006)
      This paper presents a robust method for evaluating boolean operations on triangle meshes. It is based on a fast and reliable point-in-solid algorithm that works with B-Rep representations. With this method, several boolean ...
    • It's all in the Face: Studies on Monitoring Users' Experience 

      Branco, Pedro; Encarnação, L. Miguel; Marcos, Adérito (The Eurographics Association, 2006)
      We propose to observe users spontaneous facial expressions as a method to identify adverse-event occurrences at the user interface level. We discuss an experiment designed to investigate the association between incidents ...