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  • An Object Model for Multimedia Programming 

    Arbab, F.; Herman, I.; Reynolds, G.J. (Blackwell Science Ltd and the Eurographics Association, 1993)
    The development of multimedia applications is a complex task. Much of this complexity stems from requirements associated with programming multiple media objects and the control of dependences and inter-relationships between ...
  • Using Multimedia to Support Cooperative Editing 

    Santos, A.; Tritsch, B. (Blackwell Science Ltd and the Eurographics Association, 1993)
    By Cooperative Editing we mean the coordinated manipulation of information by a group of authors. During the editing process the (co-)authors need to communicate their ideas, drafts and constraints (remotely or face-to-face) ...
  • Storage Support for Multidimensional Discrete Data in Multimedia Databases 

    Furtado, Paula; Teixeira, Jose Carlos (Blackwell Science Ltd and the Eurographics Association, 1993)
    Multidimensional discrete data (MDD) is enormously important for multimedia applications since diverse types of such data are used simultaneously by any multimedia application. However, multidimensional discrete data is ...
  • Fast Spheres 

    Patterson, John W. (Blackwell Science Ltd and the Eurographics Association, 1993)
    A new method for generating sphere-like images, using parabolic surfaces delimited by Bresenham s circle- generation algorithm, is presented. In many cases the resultant images are indistinguishable from spheres illuminated ...
  • Scale-Invariant Minimum-Cost Curves: Fair and Robust Design Implements 

    Moreton, Henry P.; Sequin, Carlo H. (Blackwell Science Ltd and the Eurographics Association, 1993)
    Four functionals for the computation of minimum cost curves are compared. Minimization of these functionals result in the widely studied Minimum Energy Curve (MEC), the recently introduced Minimum Variation Curve (MVC), ...
  • Verve 

    Knittel, Gunter (Blackwell Science Ltd and the Eurographics Association, 1993)
    The design principles of a hardware acceleratorfor volume rendering are described. The architecture represents a voxel subsystem which interfaces easily to any existing workstation. Host requirements are low since it ...
  • A Prototype of a Cooperative Visualization Workplace for the Aerodynamicist 

    Pagendarm, H.-G.; Walter, B. (Blackwell Science Ltd and the Eurographics Association, 1993)
    Several feasibility studies for cooperative visualization were performed based on an existing modular visualization system. Two different architectures for the implementation of a cooperative system were identified, ...
  • Quality Control of an Interpolation Method for Discontinuous Parametric Surfaces 

    Seron, F.J.; Torrens, J.J; Magallon, J.A. (Blackwell Science Ltd and the Eurographics Association, 1993)
    In this paper we study a finite element interpolation method for fitting discontinuous parametric surfaces when the data points are the nodes of a curvilinear grid. Quality control of the interpolating surfaces is also ...
  • Variational Surface Design and Surface Interrogation 

    Hagen, H.; Hahmann, St.; Bonneau, G.-P. (Blackwell Science Ltd and the Eurographics Association, 1993)
    The generation of technical smooth surfaces from a mesh of three-dimensional data points is an important problem in geometric modelling. In this publication we give a survey of some new techniques based on a calculus of ...
  • Interactive Neural Network Texture Analysis and Visualization for Surface Reconstruction in Medical Imaging 

    Busch, C.; Gro?, M.H. (Blackwell Science Ltd and the Eurographics Association, 1993)
    The following paper describes a new approach for the automatic segmentation and tissue classification of anatomical objects such as brain tumors from magnetic resonance imaging (MRI) data sets using artificial neural ...
  • Cooperative Visualization of Computational Fluid Dynamics 

    Gerald-Yamasaki, Michael J. (Blackwell Science Ltd and the Eurographics Association, 1993)
    Tempus Fugit/Interview is a computational fluid dynamics visualization application for which processing is distributed between high performance graphics workstations and supercomputers. Facilities are provided in the ...
  • Form Factor Calculation: a New Expression with Implementations on a Parallel T.Node Computer 

    Michelin, Sylvain; Maffeis, Gualtiero; Arques, Didier; Grossetie, Jean Claude (Blackwell Science Ltd and the Eurographics Association, 1993)
    The radiosity technique uses the heat transfer theory to define a view-independent illumination model. For complex scenes, calculation of this model is very time-intensive, due largely to the determination of a geometric ...
  • Nonsplitting Macro Patches for Implicit Cubic Spline Surfaces 

    Guo, B. (Blackwell Science Ltd and the Eurographics Association, 1993)
    Macro patches are important for generating quadric or cubic implicit spline surfaces from the input of a polyhedron. All existing macro patches split the triangular facets of the polyhedron- this paper presents cubic ...
  • An Integral Geometry Based Method for Fast Form-Factor Computation 

    Sbert, Mateu (Blackwell Science Ltd and the Eurographics Association, 1993)
    Monte Carlo techniques have been widely used in rendering algorithms for local integration. For example, to compute the contribution of a patch to the luminance of another. In the present paper we propose an algorithm based ...
  • A Progressive Radiosity Algorithm for Scenes Containing Curved Surfaces 

    Bao, Hujun; Peng, Qunsheng (Blackwell Science Ltd and the Eurographics Association, 1993)
    Based on the theory of light energy transfer between two differential diffuse surface areas, a generalized radiosity approach is presented. Unlike the conventional radiosity method, curved surfaces are subdivided into ...
  • A New Radiosity Approach Using Area Sampling for Parametric Patches 

    Nishita, Tomoyuki; Nakamae, Eihachiro (Blackwell Science Ltd and the Eurographics Association, 1993)
    A high precision illumination model is indispensable for lighting simulation and realistic image synthesis. For the purpose of improving realism, research on global illumination has been done, and several papers on radiosity ...
  • On the Application of Quantization and Dithering Techniques to History of Arts 

    Coltelli, P.; Faconti, G.; Marfori, F. (Blackwell Science Ltd and the Eurographics Association, 1993)
    The diffusion of computing techniques within humane studies is considerably increasing, due to technological advances and reduction in computing costs, with History of Arts being one of the most interesting fields of ...
  • Photo-Realistic Imaging of Digital Terrains 

    Cohen, Daniel; Shaked, Amit (Blackwell Science Ltd and the Eurographics Association, 1993)
    We present a method for the generation of photo-realistic images of views over terrain datasets by mapping a digital aerial photograph on a perspective projection of a digital elevation map. We use high resolution for both ...
  • Abstract Interaction Objects 

    Duke, D.J.; Harrison, M.D. (Blackwell Science Ltd and the Eurographics Association, 1993)
    The concept of an interactor has been introduced by Faconti and Paterno [6] as an abstraction of an entity in interactive graphics capable of both input and output. However the notion of interaction object need not be ...
  • Landscapes Synthesis Achieved through Erosion and Deposition Process Simulation 

    Roudier, P.; Peroche, B.; Perrin, M. (Blackwell Science Ltd and the Eurographics Association, 1993)
    This paper describes an original approach to terrain evolution in landscapes synthesis. In order to create some realistic landforms, we simulate geologically contrasted terrains and apply to them deterministic erosion ...

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