EG1989 Proceedings (Technical Papers)

Eurographics DL Repository

EG1989 Proceedings (Technical Papers)

 

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  • Szwillus, Gerd (Eurographics Association, 1989)
    Graphical editors are used in numerous application fields for purposes like specification, design, modelling, or description of structures of various kinds. These editors handle the graphical representations based on objects ...
  • Pottmann, Helmut (Eurographics Association, 1989)
    A new method for the visualization of curvature discontinuities of free-form surfaces is presented. It is based upon an improvement and refinement of the well-known technique of displaying isophotes.
  • - (Eurographics Association, 1989)
  • Brodlie, Ken W.; Göbel, Martin; Roberts, Ann; Ziegler, Rolf (Eurographics Association, 1989)
    Conformance testing of graphics systems is a very complex and exhausting task. Years of practice with the GKS testing tools have shown a need for the automatic testing of visual output. Indeed, with regard to graphics ...
  • Wisskirchen, Peter (Eurographics Association, 1989)
    We present a new concept for a graphics system which we call GEO++ . Apart from the manipulation of groups (structures in PHIGS-terminology), GEO++ permits a direct access to the tree structure required for display. With ...
  • Herman, Ivan (Eurographics Association, 1989)
    The outline of an extension of traditional 2D graphics systems is given. This extension is aimed at supporting a three dimensional application program, without incorporating full viewing into the general graphics system ...
  • Lienhardt, Pascal (Eurographics Association, 1989)
    The modeling of subdivisions of surfaces is of greatest interest in Geometric Modeling (in particular for Boundary Representation) , and many works deal with the definition of models, which enable the representation of ...
  • Bergeron, R. Daniel; Grinstein, Georges G. (Eurographics Association, 1989)
    This paper presents a reference model for the development of systems for the visualization of multidimensional data. The purpose of the reference model is to build a conceptual basis for thinking about multi-dimensional ...
  • Falcidieno, Bianca; Fossati, Bruno (Eurographics Association, 1989)
    In this paper a system for defining dimensions and tolerances is presented which deals with the geometric representation of the objects in a coherent and compact way. This model is a combination of a hierarchical boundary ...
  • Bardis, L.; Patrikalakis, N.M. (Eurographics Association, 1989)
    A method for blendin non uniform rational B-spline surface patches, either open or periodic, is developed. he blending surface is expressed in terms of an integral, bicubic B-spline patch. The blend ensures position and ...
  • Pins, Markus; Hild, Hermann (Eurographics Association, 1989)
    Mapping continuous-tone pictures into digital halftone pictures, i.e. 0/1-pictures, for printing purposes is a well explored technique. In this paper, one of these algorithms, the two-dimensional error-diffusion algorithm ...
  • O Bara, Robert M.; Abi-Ezzi, Salim (Eurographics Association, 1989)
    Modeling clip gives an application the ability to remove sections of an object in order to view internal detail. The clipping volume defied by modeling clip can be concave and disjoint, and is composed of a set of volumes ...
  • Goettler, Herbert (Eurographics Association, 1989)
    This paper is a report on an ongoing work which started in 1981 and is aiming at a general method which would help to considerably reduce the time necessary to develop a syntax-directed editor for any given diagram technique. ...
  • Gourret, Jean-Paul; Magnenat-Thalmann, Nadia; Thalmann, Daniel (Eurographics Association, 1989)
    This paper presents a method for combining image synthesis and modeling based on a finite element method (FEM) to get realistic intelligent images. FEM is used for modeling both elastically and plastically deformations of ...
  • Breen, David E.; Kühn, Volker (Eurographics Association, 1989)
    This paper describes a message-based object-oriented tool for exploring mathematically-based interactions which produce complex motions for computer animation. The tool has been implemented as an object in the object-oriented ...
  • Schuierer, Sven (Eurographics Association, 1989)
    The radiosity approach requires the subdivision of complex surfaces into simple components called patches. Since we assume to have constant intensity over a patch, the generation of regular patches is a desirable property ...
  • Skala, Vaclav (Eurographics Association, 1989)
    New algorithms for 2D line clipping against convex, non-convex windows and windows that consist of linear edges and arcs are being presented. Algorithms were derived from the Cohen-Sutherland 's and Liang-Barsky s algorithms. ...
  • Ghazanfarpour, D.; Peroche, B. (Eurographics Association, 1989)
    We present a method allowing to solve the three problems arising when a scene is displayed with the z-buffer algorithm. The proposed algorithm only requires one extra memory bit per pixel and delivers good quality images. ...
  • Bennis, Chakib; Gagalowicz, Andre (Eurographics Association, 1989)
    This paper presents a new method for synthesizing hierarchical textures on 3-D surfaces. This method utilizes both a mapping technique for rendering the macroscopic structure on the surface and a generalization of the ...
  • Englert, Gabriele; Sakas, Georgios (Eurographics Association, 1989)
    Existing texture models either describe textures as a non-hierarchical surface property (by means of Markov chains, time series and other stochastic methods) or distinguish only between micro and macro textures. Besides ...

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