Volume 09 (1990): Recent submissions

Now showing items 1-20 of 106

    • 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. ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • AN APPROACH TO IMPROVE THE RELIABILITY OF BOOLEAN OPERATION ON A PAIR OF POLYHEDRA 

      Li, Xinyou; Sun, Jiaguang; Tang, Zesheng (Eurographics Association, 1990)
      It is essential and pressing to improve reliability of Boolean operations in geometric modelling systems. The Boolean operations in commercial systems now available are not reliable enough because of numerical calculation ...

    • 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 ...

    • AUTOMATIC MODELLING OF NATURAL SCENES FOR GENERATING SYNTHETIC MOVIES 

      Koch, Reinhard (Eurographics Association, 1990)
      A model based analysis by synthesis algorithm is presented. It combines image analysis and synthesis techniques to obtain a three dimensional scene description and to generate synthetic movies out of that scene description. ...

    • 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 ...

    • 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 ...

    • The Architecture of a Prototype System for Drawing Data Structures 

      Ding, Chen; Mateti, Prabhaker (Eurographics Association, 1990)
      Automatic drawing of aesthetically pleasing data structure diagrams is a challenging problem which has attracted much research attention. In building such a system, we are confronted with four basic problems: (1) proper ...

    • 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. ...

    • 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 ...

    • Tightly-Coupled Multiprocessing for a Global Illumination Algorithm 

      Drettakis, George; Fiume, Eugene; Fournier, Alain (Eurographics Association, 1990)
      A prevailing trend in computer graphics is the demand for increasingly realistic global illumination models and algorithms. Despite the fact that the computational power of uniprocessors is increasing, it is clear that ...