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  • 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 ...
  • 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 ...
  • 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 ...
  • 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)
  • 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 ...
  • 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 ...
  • A CONCEPT FOR A GKS MACHINE 

    Herman, Iván; Reviczky, János; Tolnay-Knefély, Tibor (The Eurographics Association, 1985)
    General ideas for the creation of a very intelligent graphic terminal are presented; this terminal should know all GKS functionalities, including the future 3D Standard as well. Multiple Workstation concept is maintained ...
  • A Three-Dimensional Shaded Display Method for Voxel-Based Representation 

    OHASHI, Toshiaki; UCHIKI, Tetsuya; TOKORO, Mario (The Eurographics Association, 1985)
    In this paper, methods for displaying solid objects represented by a three-dimensional array of voxels are described. The Linear Interpolating Projection Method is proposed as a method by which such objects can be projected ...
  • EXTENDING GKS TO A DISTRIBUTED ARCHITECTURE 

    R.Bettarini,; G.Faconti,; L.Moltedo, (The Eurographics Association, 1985)
    The recently adopted standards in the fields of computer networks and computer graphics has given to the opportunity to start a project to develop a distributed model of the Graphical Kernel System (GKS). The aim of this ...
  • GKS Inquiry Functions within Prolog 

    Sykes, Pete; Krishnamurti, Ramesh (The Eurographics Association, 1985)
    This paper discusses the semantics of the GKS inquiry functions within a Prolog environment and illustrates the flexibility built into a proposed Prolog binding.
  • A 3-D CELLULAR FRAME BUFFER 

    Kaufman, Arie; Bakalash, Reuven (The Eurographics Association, 1985)
    A new architecture for storing and processing of threedimensional (3-D) graphics is described, The 3-D objects are discretized and stored in a full 3-D cellular memory of voxels. A 3-D graphics processor scan-converts 3-D ...
  • NEM: A LANGUAGE FOR ANIMATION OF ACTORS AND OBJECTS 

    Marino, Giuseppe; Morasso, Pietro; Zaccaria, Renato (The Eurographics Association, 1985)
    The animation of actors and objects is considered in the framework of knowledge representation, with particular regard to motor knowledge. In our opinion, a formal model for motor knowledge should fill a gap between action ...

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