Recent Submissions

  • PRELOG - A SYSTEM FOR PRESENTING AND RENDERING LOGIC SPECIFICATIONS OF INTERACTIVE SYSTEMS 

    Johnson, C.W.; Harrison, M.D. (Eurographics Association, 1990)
    Formal specifications provide the non-specialist with an extremely poor impression of what it would be like to interact with a computer system. Prototypes provide a far better impression of the ‘look and feel’ of possible ...
  • AN APPROACH TO THE FORMAL SPECIFICATION OF THE COMPONENTS OF AN INTERACTION 

    Faconti, Giorgio P.; Paterno, Fabio (Eurographics Association, 1990)
    In this paper we present the preliminary results from a work aiming to the formal specification af a model suitable for the description of interactive graphics program within the framework defined by the Reference Model ...
  • Fast Rendering of Arbitrary Distributed Volume Densities 

    Sakas, Georgios (Eurographics Association, 1990)
    In recent years a number of techniques have been developed for rendering volume effects (haze, fog, smoke, clouds, etc.). These techniques are either time consuming (ray-tracing, radiosity) or do not account for arbitrary ...
  • OPTIMIZATION OF THE BINARY SPACE PARTITION ALGORITHM (BSP) FOR THE VISUALIZATION OF DYNAMIC SCENES 

    Torres, Enric (Eurographics Association, 1990)
    This paper describes an improvement of the generation of BSP trees and its utilization in the visualization of dynamic polyhedral scenes. Dynamic BSP trees, a new six-level structure, are presented. Dynamic BSP trees are ...
  • TRIES: DATA STRUCTURES BASED ON BINARY REPRESENTATION FOR RAY TRACING 

    Thirion, Jean-Philippe (Eurographics Association, 1990)
    Tries are data structures used for multidimensional searching. We introduce an original method to build Tries for a set of convex polyhedra, weshow how Tries can be used for Ray tracing and we compare them with other data ...
  • WSE: An Environment for Exploring Window Strategies 

    Koivunen, Marja-Riitta (Eurographics Association, 1990)
    This paper describes Window Strategies Environment (WSE), which is an environment for exploring different window strategies. It is a tool for developers who want to implement and explore different window strategies easily. ...
  • RENDERING MIRAGES AND OTHER ATMOSPHERIC PHENOMENA 

    Berger, Marc; Levit, Nancy; Trout, Terry (Eurographics Association, 1990)
    The past few years have seen some very impressive results in rendering natural phenomena. This paper addresses the problem of how to model and render optical illusions brought about by atmospheric refraction. Refraction ...
  • INTERACTIVE RAY-TRACING FOR IMAGE PRODUCTION WITH INCREASING REALISM 

    Sousa, A. Augusto; Costa, Antonio M. C.; Ferreira, Fernando N. (Eurographics Association, 1990)
    The generation of highly realistic images using the conventional Ray-Tracing algorithm, in CAD environments, is totally out of the question if we consider the interactive requirements of most CAD systems. In this paper, ...
  • THREE-DIMENSIONAL TEXTURING USING LATTICES 

    Lewis, Robert R. (Eurographics Association, 1990)
    This paper describes a way to perform realistic three-dimensional texturing of ray-traced objects with irregular surfaces. Such texturing has teen done in the past with texture mapping, particle systems, or volumetric ...
  • Hemi-Cube Ray-Tracing: A Method for Generating Soft Shadows 

    Meyer, Urs (Eurographics Association, 1990)
    This paper presents a new ray-tracing technique for generating soft shadows. The technique treats scenes consisting of light sources and opaque objects which are polygons or polyhedra of arbitrary shape and size. To determine ...
  • Shading and Shadowing with Linear Light Sources 

    Poulin, Pierre; Amanatides, John (Eurographics Association, 1990)
    In virtually all rendering systems, linear light sources are modeled with a series of point light sources that require considerable computing resources to produce realistic looking results. A general solution for shading ...
  • AN INTERPOLATION METHOD FOR STOCHASTIC MODELS 

    Ramstein, G. (Eurographics Association, 1990)
    This paper presents a method using stochastic models for the simulation and interpolation of natural phenomena. These models are based on the general concept of random functions with stationary increments, to which the fbm ...
  • END USER PROGRAMMING ENVIRONMENTS : INTERACTIVE PROGRAMMING-ON-EXAMPLE IN CAD PARAMETRIC DESIGN 

    Girard, P.; Pierra, G.; Guittet, L. (Eurographics Association, 1990)
    In recent years, the number of computer end-users who do not know programming has increased rapidly. This new phenomenon has spurred a great deal of research about program design using very different approaches from the ...
  • 3D MODELLING AND MOTION OF DEFORMABLE SOLIDS FROM 2D IMAGES 

    Neveu, Marc; Faudot, Dominique (Eurographics Association, 1990)
    Our work purpose is to elaborate a geometric and motional model for deformable solids, known only by a very small number of general crosssections images. We start from a generic 3D model of the studied solid we distort ...
  • CHARACTERIZATION OF TOPOGRAPHIC SURFACES 

    Falcidieno, Bianca; Spagnuolo, Michela (Eurographics Association, 1990)
    This paper presents a method for extracting and representang features of a topographic surface approximated by triangular tales An algorithm as given which computes characteristic regions (a. e. regions having concave, ...
  • EDEN - AN EDITOR ENVIRONMENT FOR OBJECT- ORIENTED GRAPHICS EDITING 

    Fellner, Dieter W.; Kappe, F. (Eurographics Association, 1990)
    Systems allowing the creation and manipulation of graphical information (so-called Graphic Editors) have become essential in various fields of applications. At the same time the typical user of such a system has changed. ...
  • Mathematical Models for Semi-globalized Spectral Synthesis 

    Anjyo, Ken-ichi (Eurographics Association, 1990)
    Semi-globalized spectral synthesis is proposed as a new tool for three-dimensional scene description consisting of many natural objects, such as terrain, sea waves, and clouds. The method is based on the mathematical theory ...
  • HYPERIMAGES - AN ALTERNATIVE TO THE CONVENTIONAL DIGITAL IMAGES 

    Bieri, Hanspeter (Eurographics Association, 1990)
    Hyperimages represent a variation of the conventional digital images which implies pixels of different dimensions within the same image. The extent of a hyperimage is the disjoint union of all pixel extents it contains, ...
  • A Stochastic Functional Approach for Terrain Modeling 

    Dong, Jun-Cai; Peng, Qun-Sheng; Liang, You-Dong (Eurographics Association, 1990)
    A new functional modeling approach - -functional modeling, is presented to depict various classes of natural terrain. While this approach possesses the functions of several previous methods, it does not suffer the drawbacks ...
  • On Formulation and Display for Visualizing Features and Evaluating Quality of Free-form Surfaces 

    Higashi, Masatake; Kushimoto, Takuya; Hosaka, Mamoru (Eurographics Association, 1990)
    For evaluating quality of free-form surfaces and visualizing their features, various curves on a surface, which characterize its properties, are defined and their equations are deduced. Newly introduced curves include those ...

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