Browsing EG1981 Proceedings (Technical Papers) by Title

Now showing items 11-30 of 30

    • THE GEOMETRIC WORKBENCH (GWB) - AN EXPERIMENTAL GEOMETRIC MODELING SYSTEM 

      Mäntylä, Martti; Takala, Tapio (The Eurographics Association, 1981)
      The Geometric workbench (GWB), an experimental. geometric modeling system, is described. It is based on a hybrid representation scheme, where solids are represented by CSG volume trees and boundary representations. Boundary ...

    • A GKS IMPLEMENTATION FOR METEOROLOGICAL APPLICATIONS 

      Ducrot, A.; Lemaire, A.; Watkins, H. (The Eurographics Association, 1981)
      In this paper we describe a GKS implementation made at ECMWF and we point out some problems encountered related to the definition of GKS 6.2 and to the necessity to adapt to the meteorogical applications.

    • A GKS INTERFACE TO A REALTIME ORIENTED RASTER WORKSTATION FOR CAD APPLICATIONS 

      Lindner, R.; Rix, J. (The Eurographics Association, 1981)
      The interface of the Graphical Kernel System GKS is examined with respect to the demands of realtime raster graphics. First the computation time for the different transformations is estimated, to show the great gap between ...

    • Graphics Standards - Where are we ? 

      Hagen, Paul J.W. ten (The Eurographics Association, 1981)
      An overview is given of the state of the standardization efforts of ISO/TC97/SC5/WG2, which currently concentrate on GKS. The standardization activities are illustrated by presenting a recently incorporated concept of ...

    • A HARDWARE APPROACH TO THE CORE SYSTEM OF ACM/SIGGRAPH 

      Möller, Gerd (The Eurographics Association, 1981)
      A new structure of the picture generation pipeline for a high-performance vector refresh graphic system is proposed. This pipeline consists of a graphic processor calculating the viewing transformations, a refresh buffer ...

    • THE HIGH-LEVEL GRAPHICS PROGRAMMING LANGUAGE PASCAL/GRAPH 

      W.Barth,; J.Dirnberger,; W.Purgathofer, (The Eurographics Association, 1981)
      A high-level programming language like PASCAL offers data types, variables, constants and operators, by which the programmer can reflect the actual world as a model inside the computer. The world of numbers and text has ...

    • THE IMPACT OF COMPUTER GRAPHICS ON INDUSTRIAL PRODUCT DEVELOPMENT 

      Vlietstra, J. (The Eurographics Association, 1981)

    • MOVIE.BYU - 1981 

      Christiansen, H. N.; Stephenson, M. B.; Nay, B. J.; Ervin, D. G.; Hales, R. F. (The Eurographics Association, 1981)
      MOVIE.BYU facilitates the display of three-dimensional mathematical, topological, and architectural models as line drawings or as continuous tone shaded images. This software provides the capability to clip and cap three ...

    • A NEW METHOD FOR LOCAL SMOOTH INTERPOLATION 

      Renner, Gabor; Pochop, Vladimir (The Eurographics Association, 1981)
      A new method for interpolation is presented which starts from a given set of data pints. The resulting curve consisting of a set of polynomials has tangent vector continuity in the nodes, and can have straight line sections ...

    • A Revolution in Hardware Systems Design and its Implications for the Graphics Community 

      Clark, James H. (The Eurographics Association, 1981)

    • SGL APPLICATION - DEFINITION AND PRACTICAL USE 

      Cunha, J.D. (The Eurographics Association, 1981)
      This paper describes our experience in the development of an application using the SGL system presented in previous publications ( [2] [3] ). Special attention is paid to the pos sibilities and limitations due to GKS ...

    • SMOOTHING A DIGITIZED CURVE BY DATA REDUCTION METHODS 

      Opheim, Harald (The Eurographics Association, 1981)
      In order to reduce storage and subsequent processing costs for a digitized cartographic curve, we may wish to reduce the data set. The data reduction method which is described in this paper, can be used on-line during the ...

    • SOME USEFUL BUT RATHER UNUSUAL GRAPHICAL PRIMITIVES 

      Magnenat-Thalmann, Nadia; Thalmann, Daniel; Bergeron, Philippe (The Eurographics Association, 1981)
      The MIRALIB library is a powerful graphical library which may be used with MIRA-2D, a graphical PASCAL extension as well as with the standard PASCAL language. MIRALIB includes figure algebra routines, figure measure ...

    • STATE OF THE ART IN COMPUTER GRAPHICS: A SIGGRAPH PERSPECTIVE 

      Badler, Norman I.; Ellis, Robert A. (The Eurographics Association, 1981)

    • TELIDON: WHERE VIDEOTEX MEETS COMPUTER GRAPHICS 

      Newman, Hannah (The Eurographics Association, 1981)
      Videotex is a system by which information can be accessed from central data bases by the general public. By the use of a television receiver augmented by a micro-computer controlled interface device, a user can access pages ...

    • TIME AND SPACE BOUNDS FOR HIDDEN LINE AND HIDDEN SURFACE ALGORITHMS 

      Schmitt, Alfred (The Eurographics Association, 1981)
      Asymptotic worst case time bounds for three hidden line algorithms are derived and analysed. The first algorithm is a brute force solution that needs at least quadratic time. The second exact hidden line algorithm is based ...

    • TOWN PLANNING AIDED BY AN INTEGRATED MUNICIPAL LAND INFORMATION SYSTEM 

      Eloranta, Kirsi (The Eurographics Association, 1981)
      The purpose of this paper is to describe the results of our recent land information systems research in The Institute of Geodesy at Helsinki University of Technology. Our goal is to make research on municipal systems by ...

    • THE USE OF STANDARD GRAPHICS SOFTWARE IN THE STARLINK IMAGE PROCESSING FACILITY 

      J.R.Gallop, (The Eurographics Association, 1981)
      Starlink is a network of powerful interactive minicomputers, for use by astronomers in the UK; these computers run common software distributed from a central node. The use of standard general purpose graphics software in ...

    • USER GUIDANCE IN INTERACTIVE SYSTEMS - THE ROLE OF GRAPHICAL FEATURES 

      Trispel, S.; Günther, K. (The Eurographics Association, 1981)
      Users of technical systems become increasingly involved in computer controlled dialogues of various forms. One kind of dialogue is of the interrogative form based on the exchange of alphanumeric and symbolic strings via ...

    • VOICE RECOGNITION IN A GRAPHIC SYSTEM 

      Gnettner, Wolfgang (The Eurographics Association, 1981)
      Voice recognition is discussed as a useful tool in interactive graphics. Two applications in electronical design and surveying are described. First results show an increased input speed, a low error probability and more ...