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Browsing Volume 06 (1987) by Title

Now showing items 95-114 of 114

    • Scan Converting Extruded Lines at Ultra High Definition 

      Willis, Philip; Watters, Geoff (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      We consider the problem of generating freehand raster graphics pictures at ultra high definition (typically one gigapixel per picture) by scan converting extruded lines. We describe a fast scan conversion algorithm which ...

    • A Scanline Method for Solid Model Display 

      Patel, Manjula; Hubbold, Roger J. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      The modelling of solid objects is becoming increasingly important in the application of computer graphics to a wide variety of problems, such as CAD/CAM, simulation, and molecular modelling. A variety of methods for rendering ...

    • Shape Approximation by a Fractal Model 

      Levy-Vehel, J.; Gagalowicz, A. (Eurographics Association, 1987)
      The use of fractals to synthesize complex objects is of current interest in the computer graphics community. A powerful way to compute fractals is the use of IFS (iterated function system) which is a set of contractions ...

    • A Shareable Centralised Database of KRT3 - A Hierarchical Graphics System Based on PHIGS 

      Howard, Toby (Eurographics Association, 1987)
      The Programmer’s Hierarchical Interactive Graphics System (PHIGS), currently under development by ISO, is a specification of a set of functions for device-independent computer graphics programming, supporting dynamic ...

    • SIGHT-A Dedicated Computer Graphics Machine 

      Naruse, Tadashi; Yoshida, Masaharu; Takahashi, Tokiichiro; Naito, Seiichiro (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      The. architecture of, and a performance estimate for, the dedicated graphics processor - SIGHT, a high-speed ray tracing machine, are presented. Ray tracing is a vector calculation in 3-dimensional (3-D) space and each ray ...

    • A Simple and Efficient Haloed Line Algorithm for Hidden Line Elimination 

      Franklin, W.R; Akman, V. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      An efficient algorithm, HALO, is given to compute haloed line drawings of wire frame objects. Haloed line drawings are described by Appel et al.1HALO has two parts: CUT and DRAW. CUT uses an adaptive grid to find all edge ...

    • Some Aspects of Binding GKS to C++ 

      Richards, J.E. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      Aspects of a prototype binding of GKS to the C++ programming language are presented. The binding makes use of classes and derived classes to define GKS concepts such as segments and workstations. Operator overloading is ...

    • Splines for Engineers 

      Ohlin, S.C. (Eurographics Association, 1987)
      This paper introduces the concept of interpolation consistency. It is claimed that this property is an essential one for splines that are intended for use in Computer Aided Design. Consistency is defined as the property ...

    • Systolic Architecture for Boolean Operations on Polygons and Polyhedra 

      Krishnan, D.; Patnaik, L.M. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      In Computer-Aided Design applications there is often a need to compute the union, intersection and Merence of two polygons or polyhedra. The sequential algorithms for this problem are characterized by poor speed of response ...

    • A Temporal Scripting Language for Object-Oriented Animation 

      Fiume, E.; Tsichritzis, D.; Dami, L. (Eurographics Association, 1987)
      Object orientation and concurrency are inherent to computer animation. Since the pieces of an animation can come from various media such as computer-generated imagery, video, and sound, the case for object orientation is ...

    • UltraPaint: A New Approach to a Painting System 

      Watters, Geoff; Willis, Philip (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      The ideas underlying a Painting System being developed at the University of Bath are introduced. This differs from a conventional system in that ultra high definition pictures of upto 1 gigabyte may be created. We discuss ...

    • Unifying Vector and Polygon Algorithms for Scan Conversion and Clipping 

      Kilgour, AIistair (Eurographics Association, 1987)
      In both scan conversion and clipping, algorithm for dealing with polygons are generally presented independently of those for vectors, although many of the operations performed are similar. This paper shows how polygon ...

    • A User-Interface Toolkit in Object-Oriented PostScript Owen M. Densmore 

      Densmore, Owen M.; Rosenthal, David S. H. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      Only the diehards want to develop applications using basic window system facilities. The preferred approach is a higher-level"toolkit" of user interface components, such as menus and scroll bars. Experience with current ...

    • Using Abstract Data Types To Define Large-scale World Models For Image Generation Systems 

      Marsh, S.C.; Grimsdale, R.L. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      The creation of databases for real-time image generation systems is expensive and time consuming. This is mostly due to the method of defining the world models which can currently represent an area of up to 500,000 sq Km. ...

    • A View of Eurographics 87 

      Howard, Toby (Blackwell Publishing Ltd and the Eurographics Association, 1987)

    • Visual Simulation of Atmospheric Haze 

      Willis, P.J. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      For applications such as daylight visual pilot training simulators, the correct representation of aerial haze, mist and fog is of major importance in providing accurate depth cues and training in poor visibility conditions.We ...

    • Viz: A Production System Based User Interface Management System 

      van Harmelen, Mark; Wilson, Stephanie M. (Eurographics Association, 1987)
      A production system based User Interface Management System (UIMS) is discussed. The UIMS, called Viz, has been designed and implemented in a windowed workstation environment, and (a) capitalises on the graphical facilities ...

    • A VLSI System Architecture for High-Speed Radiative Transfer 3D Image Synthesis 

      Bu, Jichun; Deprettere, Ed F. (Eurographics Association, 1987)
      In this paper we present a VLSI system architecture for high-speed synthesis of 3D images composed of diffusely reflective surfaces. The system consists of two loosely coupled sub-systems. The first sub-system computes the ...

    • Welcome to EUROGRAPHICS 87 

      Unknown author (Blackwell Publishing Ltd and the Eurographics Association, 1987)

    • A Window Managment System on Top of GKS 

      Hartelt, Helga I.M.; Magalhaes, Leo Pini; Daltrini, Beatriz Mascia (Eurographics Association, 1987)
      This paper presents a Window Management System, GAV, which utilizes a GKS Graphics System as a supporting tool. GAV allows the definition, by the users (designers of application programs), of several areas of visualization ...