Browsing EG1985 Proceedings (Technical Papers) by Issue Date

Now showing items 1-20 of 36

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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 ...

    • A CSG LIST PRIORITY HIDDEN SURFACE ALGORITHM 

      Jansen, F.W. (The Eurographics Association, 1985)
      Several algorithms exist for visualizing geometric models defined by constructive solid geometry (CSG). Each of these algorithms is based on standard hidden surface methods, such as ray tracing, scan-line and z-buffer ...

    • MULTI-DIMENSIONAL GRAPHICS 

      Inselberg, Alfred (The Eurographics Association, 1985)

    • 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 ...

    • 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 ...

    • 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 illumination model for ray-tracing 

      MONTCEL, Bruno TEZENAS DU; NICOLAS, Alain (The Eurographics Association, 1985)

    • 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 ...

    • Colour Section 

      - (The Eurographics Association, 1985)
      Colour Section

    • 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.

    • THE USE OF GRAPHICAL SYMBOLIC COMMANDS (ICONS) IN APPLICATION PROGRAMS 

      Woodgate, H. Sam (The Eurographics Association, 1985)
      This paper describes the use of Graphical Symbols (Icons) as a means of communicating operating commands between application program and users. detailed in the paper is the operational command system for a "Spread Sheet ...

    • 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 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 ...

    • 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 ...

    • 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 ...

    • 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 ...