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  • Approximate Conversion of Parametric to Implicit Surfaces 

    Velho, Luiz; Gomes, Jonas (Blackwell Science Ltd and the Eurographics Association, 1996)
    In this paper we present a framework for the approximate conversion of parametric to implicit surfaces. It takes as input a parametric description and generates a piecewise analytic implicit representation. The conversion ...
  • Adaptive Sampling of Implicit Surfaces for Interactive Modelling and Animation 

    Desbrun, Mathieu; Tsingos, Nicolas; Gascuel, Marie-Paule (Blackwell Science Ltd and the Eurographics Association, 1996)
    This paper presents a new adaptive sampling method for implicit surfaces that can be used in both interactive modelling and animation. The algorithm samples implicit objects composed of blending primitives and efficiently ...
  • The Production of Volume Data from Triangular Meshes Using Voxelisation 

    Jones, Mark W. (Blackwell Science Ltd and the Eurographics Association, 1996)
    Voxelisation is the term given to the process of converting data from one source type into a three dimensional volume of data values. The techniques known collectively as volume visualisation can then be applied to the ...
  • Efficient Hierarchical Refinement and Clustering for Radiosity in Complex Environments 

    Gibson, S.; Hubbold, R.J. (Blackwell Science Ltd and the Eurographics Association, 1996)
    Generating accurate radiosity solutions of very complex environments is a time-consuming problem. We present a rapid hierarchical algorithm that enables such solutions to be computed quickly and efficiently. Firstly, a new ...
  • Adaptive Enumeration of Implicit Surfaces with Affine Arithmetic 

    de Figueiredo, Luiz Henrique; Stolfi, Jorge (Blackwell Science Ltd and the Eurographics Association, 1996)
    We discuss adaptive enumeration and rendering methods for implicit surfaces, using octrees computed with affine arithmetic, a new tool for range analysis. Affine arithmetic is similar to standard interval arithmetic, but ...
  • Dynamics and Chaos: The Spherical Pendulum 

    Palacios, Antonio; Gross, Lee M.; Rockwood, Alyn P. (Blackwell Science Ltd and the Eurographics Association, 1996)
    All but the simplest of dynamical systems contain nonlinearities that play an important role in modeling and simulating physical systems. They create unpredictable (chaotic) behavior that is often hidden or neglected in ...
  • Interactive Rendering of CSG Models 

    Wiegand, T. E (Blackwell Science Ltd and the Eurographics Association, 1996)
    We describe a CSG rendering algorithm that requires no evaluation of the CSG tree beyond normalization and pruning. It renders directly from the normalized CSG tree and primitives described (to the graphics system) by their ...
  • A Unified, Object-Oriented Graphics System and Software Architecture for Visualising CAD/CAM Presentations 

    Kochhar, Sandeep; Hall, Jim (Blackwell Science Ltd and the Eurographics Association, 1996)
    Most object-oriented graphics systems (OOGS) either support general purpose graphics capabilities (drawing editors, ray tracing, etc.), or have targeted specific areas of computer graphics, for example, interface building, ...
  • Topologically exact evaluation of polyhedra defined in CSG with loose primitives 

    Banerjee, Raja (P.K.); Rossignac, Jarek R. (Blackwell Science Ltd and the Eurographics Association, 1996)
    Floating point round-off causes erroneous and inconsistent decisions in geometric modelling algorithms. These errors lead to the generation of topologically invalid boundary models for CSG objects and significantly reduce ...
  • Using a Convex Pyramid to Bound Surface Normal Vectors 

    Daniel, M. (Blackwell Science Ltd and the Eurographics Association, 1996)
    Determining a tight bounding volume of all the surface normal vectors is of interest in surface modelling especially for intersection problems, in order to detect closed intersection curves. It is also important to determine ...
  • SCROOGE:Perceptually-Driven Polygon Reduction 

    Reddy, M. (Blackwell Science Ltd and the Eurographics Association, 1996)
    Many real-time 3D graphics renderers represent each object as a collection of simple polygons. The complexity of this polygon structure is of practical relevance because it can manifestly affect the performance of the ...
  • Mesh Simplification 

    Algorri, Maria-Elena; Schmitt, Francis (Blackwell Science Ltd and the Eurographics Association, 1996)
    Mesh simplification is an important stage after surface reconstruction since the models produced can contain a large number of polygons making them difficult to manipulate. In this paper we present a mesh simplification ...
  • Automatic Generation of Multiresolution Boundary Representations 

    Andujar, C.; Ayala, D.; Brunet, P.; Arinyo, R. Joan; Sole, J. (Blackwell Science Ltd and the Eurographics Association, 1996)
    The paper focuses on automatic simplification algorithms for the generation of a multiresolution family of solid models from an initial boundary representation of a polyhedral solid. An algorithm for general polyhedra based ...
  • Real-time Volumetric Deformable Models for Surgery Simulation using Finite Elements and Condensation 

    Bro-Nielsen, Morten; Cotin, Stephane (Blackwell Science Ltd and the Eurographics Association, 1996)
    This paper discusses the application of 3D solid volumetric Finite Element models to surgery simulation. In particular it introduces three new ideas for solving the problem of achieving real-time performance for these ...
  • Full-range approximation of triangulated polyhedra. 

    Ronfard, Remi; Rossignac, Jarek (Blackwell Science Ltd and the Eurographics Association, 1996)
    We propose a new algorithm for automatically computing approximations of a given polyhedral object at different levels of details. The application for this algorithm is the display of very complex scenes. where many objects ...
  • Symbiosis of Virtual Reality and Scientific Visualization System 

    Haase, Helmut (Blackwell Science Ltd and the Eurographics Association, 1996)
    This paper describes a concept for the symbiosis of a virtual reality system and a system for scientific visualization, as well as an implementation (called ISVAS-VR) to evaluate the concept. The idea is to preserve the ...
  • Incremental Volume Rendering Using Hierarchical Compression 

    Haley, Michael B.; Blake, Edwin H. (Blackwell Science Ltd and the Eurographics Association, 1996)
    We present a new algorithm here for efficient incremental rendering of volumetric datasets. The primary goal of this algorithm is to give average workstations the ability to efficiently render volume data received over ...
  • A Platform for User-Tailored Interaction Development in 2D, 3D, and VR 

    Encarnacao, L. Miguel; Fechter, Jurgen; Grunert, Thomas; Strasser, Wolfgang (Blackwell Science Ltd and the Eurographics Association, 1996)
    The discussion on the advantages and disadvantages of 2D, 3D, and VR interfaces and their applicability to different types of systems, users, and information led to a series of stand-alone implementations that lack the ...
  • Demand-Driven Geometry Transmission for Distributed Virtual Environments 

    Schmalstieg, Dieter; Gervautz, Michael (Blackwell Science Ltd and the Eurographics Association, 1996)
    We present a strategy for rendering in distributed virtual environments. A geometry database is maintained by a server, while users invoke individual clients to interact with the environment. Instead of downloading a ...
  • 3D Interactive Topological Modeling using Visible Human Dataset 

    Beylot, P; Gingins, P; Kalra, P; Thalmann, N Magnenat; Maurel, W; Thalmann, D; Fasel, J (Blackwell Science Ltd and the Eurographics Association, 1996)
    Availability of Visible Human Dataset (VHD)has provided numerous possibilities for its exploitation in both medical applications and 3D animation. In this paper, we present our interactive tools which enable extraction of ...

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