Browsing EG1989 Proceedings (Technical Papers) by Title

Now showing items 37-42 of 42

    • Variations on a Dither Algorithm 

      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 ...

    • Visualisation in Astrophysics 

      Ertl, T.; Geyer, F.; Herold, H.; Kraus, U.; Niemeier, R.; Nollert, H.- P.; Rebetzky, A.; Ruder, H.; Zeller, G. (Eurographics Association, 1989)
      This paper reports on progress we have made in modelling cosmic X-ray sources on supercomputers. The results we present are meant to serve as an example for the fact that sophisticated visualization techniques play a crucial ...

    • Visualisation of Digital Terrain Data 

      Thiemann, Rolf; Fischer, Joachim; Haschek, Guido; Kneidl, Gerald (Eurographics Association, 1989)
      Visualisation technology has found practical application in the field of terrain data processing. A raster data base (RDB-) concept will be introduced, i.e. a multi-dimensional concept of terrain data using elevation data, ...

    • Visualizing Curvature Discontinuities of Free-Form Surfaces 

      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.

    • A VLSI Chip for Ray Tracing Bicubic Patches 

      Bouatouch, Kadi; Saouter, Yannick; Candela, Jean Charles (Eurographics Association, 1989)
      This paper deals with the integration of a VLSI chip dedicated to ray tracing bicubic patches. A recursive subdivision algorithm is embedded in this chip. The recursion stops when the termination conditions are met. A ...

    • When is a Line a Line? 

      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 ...