Recent Submissions

  • FRACTIONAL BROWNIAN RELIEF : AN EXACT LOCAL METHOD 

    FELLOUS, A.; GRANARA, J.; HOURCADE, J. C. (The Eurographics Association, 1985)
    Fractional Brownian process has been widely used for computer rendering of terrain models. The implementation constraints in Computer Graphics have led to the use of recursive methods, based on some local properties of ...
  • RASTER ROTATION OF BILEVEL BITMAP IMAGES 

    Hersch, Roger D. (The Eurographics Association, 1985)
    A fast raster rotation algorithm based on nearest-neighbour interpolation is described. Essentially, the computation consists of two additions/subtractions and two rounding operations per rotated image pixel. The rotation ...
  • GENERALIZATION OF CONTOUR TRACKING IN IMAGE SYNTHESIS, AND APPLICATION 

    Hegron, Gerard (The Eurographics Association, 1985)
    In this report, we propose to present most of the treatments about convex and nonconvex colored shapes from a data structure of their contour which is the general approach of contour tracking . Contour filling and oblique ...
  • TABLE LOOK-UP GRAPHlC INTERPOLAT ION 

    Alia, G.; Barsi, F.; Martinelli, E.; Tani, N. (The Eurographics Association, 1985)
    In this paper a fast procedure is presented to fairly interpolate a given set of points, which is mainly based on the use of table look-up techniques. Storage amounts required can be easily supplied by present memories ...
  • AN INTERACTIVE RENDERING TECHNIQUE FOR 3-D SHAPES 

    KONDO, Kunio; KIMURA, Fumihiko; TAJIMA, Taro (The Eurographics Association, 1985)
    This paper describes an interactive rendering technique for giving an impression of 3-D shapes. The following points are discussed : 1) The classification of continuous tone patterns 2) Methods of drawing pictures to enhance ...
  • GRAPHICAL DATA BASES BUILT ON PEANO SPACE-FILLING CURVES 

    LAURINI, Robert (The Eurographics Association, 1985)
    This paper is devoted to the applications of Peano spacefilling curves for modelling graphics information. These curves, based on bit interlacing, allow the modelling, easily, of images with quadtrees, solids with octrees ...
  • Configuring Reference Systems for Certifying GKS Implementations 

    Gbel, M.; Hbner, W. (The Eurographics Association, 1985)
    The development of test packages for certifying GKS implementations is based on the falsification approach which provides a useful framework in the area of software validation. Although there are different test strategies, ...
  • MULTI-DIMENSIONAL GRAPHICS 

    Inselberg, Alfred (The Eurographics Association, 1985)
  • TOWARDS OBJECT-ORIENTED GRAPHICS STANDARDS 

    Wisskirchen, Peter (The Eurographics Association, 1985)
    The introduction of powerful object-oriented systems such as Smalltalk-80 and ZetaLisp Flavors offers a number of potential benefits to the field of computer graphics. This paper examines the potential for marrying ...
  • A NORMAL-BUFFER VECTORIZED SURFACE SHADING MODEL 

    Curington, Ian J. (The Eurographics Association, 1985)
    A surface rendering implementation is described that separates visibility operations from surface shading operations with a Normal-Buffer data structure. This allows for scene complexity independent shading operations at ...
  • A GENERALISATION OF THE TIMMER BLENDING FUNCTIONS FOR BEZIER-TYPE CUBIC CURVES 

    NTOKO, NZUMBE-MESAPE (The Eurographics Association, 1985)
    Alternative blending functions are derived for a Bezier-type cubic curve touching the middle side of its control polygon. Three shape parameters are used which determine the point on the middle side of the control polygon ...
  • Graphics Programming with "Archetypes" - A Preliminary Study - 

    Martins, Fernando Mar io; Oliveira, Jose Nuno (The Eurographics Association, 1985)
    This paper is a brief report on the initial phase of the formal development of a graphics programming system. At this stage of the specification, the system architecture is just outlined and attention is focussed on the ...
  • PIPELINE APPROACH FOR BUILDING THE PRESENTATION GRAPHICS SYSTEMS 

    Klimenko, S.V.; Kochin, V.N.; Samarin, A.V. (The Eurographics Association, 1985)
    A pipeline approach is suggested for building up presentation graphics systems from modules performing elementary transformations of graphics objects. Different ways of composing pipelines are discussed which allow the ...
  • BICEPS - THE INTERACTIVE GRAPHICS AIDED SYSTEM FOR BI-DIMENSIONAL GEOMETRY YODELING, NESTING AND FLAME CUTTING TECHNOLOGY 

    Kobvlinski, Wiktor J. (The Eurographics Association, 1985)
    An essential condition for effective usage of numerically controlled devices is their correct and efficient programming. Especially in cutting applications every nesting layout requires a new control program tape. The ...
  • PIPEMATIC: A DISTRIBUTED SYSTEM FOR THE DESIGN OF GEOMETRICALLY TIGHT PIPING STRUCTURES 

    Sulonen, Reijo; Tikkanen, Matti (The Eurographics Association, 1985)
    The main principles of an interactive design system intended for the solution of 3D geometric placement problems are described. The first applications for the system will be related to the design of machine rooms in ships ...
  • INTEGRATED GRAPHICS ENIVRONMENT EASES AVIONIC DISPLAY SOFTWARE DEVELOPMENT 

    BRATEL, Alain; CLAPIER, Christian; ETTER, Michel (The Eurographics Association, 1985)
    An original methodology to develop real-time graphics software is presented. It will supply efficient software production for avionic display systems. The purpose is a complete specification, simulation and programming ...
  • TOUCHSCREEN AND COMPUTER GRAPHICS IN A SCIENCE MUSEUM 

    Clerget, Yves; Cottrell, Vincent; Raoust, Michel; Withnell, Jean (The Eurographics Association, 1985)
    Scientific information presented by a Science Museum must be both easily understood and easily memorized. Public interest must be maintained at a very high level during the presentation: interaction of the public with the ...
  • VIEWING SOLID MODELS BY BINTREE CONVERSION 

    Koistinen, Petri; Tamminen, Markku; Samet, Hanan (The Eurographics Association, 1985)
    A hidden surface algorithm is presented for viewing constructive solid geometry representations of solids (CSG trees) by converting them implicitly into a 3-d recursive spatial subdivision (bintree). The algorithm prunes ...
  • CREATING CSG MODELLED PICTURES FOR RAY-CASTING DISPLAY 

    CORDONNIER, E.; BOUVILLE, C.; DUBOIS, J.L.; MARCHAL, I. (The Eurographics Association, 1985)
    30-picture synthesis systems used for instance in the audiovisual field or networked services require the implementation of easy-to-use aids to composition. This particular composition software realizes the sizing and ...
  • GEOMETRIC MODELLING USING EXACT OCTREE REPRESENTATION OF POLYHEDRAL OBJECTS 

    Brunet, Pere; Navazo, Isabel (The Eurographics Association, 1985)
    In the last few years, octrees have been proposed for the representation of solids in Geometric Modelling systems. Using them, boolean operations are simple; however, they use a great amount of memory and it is very difficult ...

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