Now showing items 1-20 of 758

    • Mirror, Mirror on the Wall, Who Has the Best Visualization of All?- A Reference Model for Visualization Quality 

      Haase, Helmut (The Eurographics Association, 1998)
      What is a 'good' visualization, one which leads to desired insights? How can we evaluate the quality of a scientific visualization or compare two visualizations (or visualization systems) to each other? In the following, ...
    • Visualization of Time-Dependent Velocity Fields by Texture Transport 

      Becker, Joachim; Rumpf, Martin (The Eurographics Association, 1998)
      Vector field visualization is an important topic in scientific visualization. The aim is to graphically represent field data in an intuitively understandable and precise way, which should be closely related to the physical ...
    • Particle Tracing on Sparse Grids 

      Teitzel, Christian; Grosso, Roberto; Ertl, Thomas (The Eurographics Association, 1998)
      These days sparse grids are of increasing interest in numerical simulations. Based upon hierarchical tensor product bases, the sparse grid approach is a very e cient one improving the ratio of invested storage and computing ...
    • Adaptively Adjusting Marching Cubes Output to Fit A Trilinear Reconstruction Filter 

      Allamandri, Fabio; Cignoni, Paolo; Montani, Claudio; Scopigno, Roberto (The Eurographics Association, 1998)
      The paper focuses on the improvement of the quality of isosurfaces fitted on volume datasets with respect to standard MC solutions. The new solution presented improves the precision in the reconstruction process using an ...
    • Experiments on the Accuracy of Feature Extraction 

      Reinders, Freek; Spoelder, Hans J.W.; Post, Frits H. (The Eurographics Association, 1998)
      Feature extraction is an approach to visualization that ex- tracts important regions or objects of interest algorithmically from large data sets. In our feature extraction process, high-level attributes are cal- culated ...
    • Stereoscopic Volume Rendering 

      Hubbold, Roger J.; Hancock, David J.; Moore, Christopher J. (The Eurographics Association, 1998)
      In this paper we describe the extension of a parallel, distributed, direct volume renderer for use with a novel auto-stereoscopic display. We begin by brie y describing the target application of our research, radiation ...
    • Particle Tracing in σ-Transformed Grids using Tetrahedral 6-Decomposition 

      Sadarjoen, Ari; Boer, Alex J. de; Post, Frits H.; Mynett, Arthur E. (The Eurographics Association, 1998)
      Particle tracing in curvilinear grids often employs decomposition of hexahedral cells into 5 tetrahedra. This method has shortcomings when applied to sigma-transformed grids, a grid type having strongly sheared cells, ...
    • Three-Dimensional Visualization of Atomic Collision Cascades 

      Sroubek, Filip; Slavik, Pavel (The Eurographics Association, 1998)
      The paper describes a new approach to the visualization of atomic collision cascades and using the interaction with visualized data. The collision cascade is a physical phenomenon initiated by bombarding the surface of a ...
    • Enhancing the Visualization of Characteristic Structures in Dynamical Systems 

      Löffelmann, Helwig; Gröller, Eduard (The Eurographics Association, 1998)
      We present a thread of streamlets as a new technique to visualize dynamical systems in three-dimensional space. A trade-off is made between solely visualizing a mathematical abstraction through lowerdimensional manifolds, ...
    • Data Compression of Multiresolution Surfaces 

      Klein, Reinhard; Gumhold, Stefan (The Eurographics Association, 1998)
      In this paper we introduce a new compressed representation for multiresolution models (MRM) of triangulated surfaces of 3D-objects. Associated with the representation we present compression and decompression algorithms. ...
    • Data-Dependent Surface Simplification 

      Frank, Karin; Lang, Ulrich (The Eurographics Association, 1998)
      In Scientific Visualization, surfaces have often attached data, e. g. cutting surfaces or isosurfaces in numerical simulations with multiple data components. These surfaces can be e. g. the output of a marching cubes ...
    • Fast Generation of Multiresolution Surfaces from Contours 

      Schilling, Andreas; Klein, Reinhard (The Eurographics Association, 1998)
      Surface reconstruction from contours is an important problem especially in medical applications. Other uses include reconstruction from topographic data, or isosurface generation in general. The drawback of existing ...
    • A Client-side Approach towards Platform Independent Molecular Visualization over the World Wide Web 

      Bender, Michael; Hagen, Hans; Seck, Axel (Springer and The Eurographics Association, 1999)
      A web-based, entirely platform independent Molecular Visualization System has been developed using state of the Internet programming techniques. This system offers the visualization of various molecular models, molecular ...
    • Geodesic Flow on Polyhedral Surfaces 

      Polthier, Konrad; Schmies, Markus (Springer and The Eurographics Association, 1999)
      On a curved surface the front of a point wave evolves in concentric circles which start to overlap and branch after a certain time. This evolution is described by the geodesic flow and helps us to understand the geometry ...
    • Real-Time Maximum Intensity Projection 

      Mroz, Lukas; König, Andreas; Gröller, Eduard (Springer and The Eurographics Association, 1999)
      Maximum Intensity Projection (MIP) is a volume rendering technique which is used to extract high-intensity structures from volumetric data. At each pixel the highest data value encountered along the corresponding viewing ...
    • Parallel Ray Casting of Visible Human on Distributed Memory Architectures 

      Bajaj, Chandrajit; Ihm, Insung; Koo, Gee-bum; Park, Sanghun (Springer and The Eurographics Association, 1999)
      This paper proposes a new parallel ray-casting scheme for very large volume data on distributed-memory architectures. Our method, based on data compression, attempts to enhance the speedup of parallel rendering by quickly ...
    • VIVENDI - A Virtual Endoscopy System for Virtual Medicine 

      Bartz, Dirk; Skalej, Martin (Springer and The Eurographics Association, 1999)
      Virtual Medicine is an emerging and challenging field in Computer Graphics. Numerous visualization methods are used to model and render data of different modalities. In this paper, we present a new endoscopy system for ...
    • Procedural Shape Generation for Multi-dimensional Data Visualization 

      Ebert, David S.; Rohrer, Randall M.; Shaw, Christopher D.; Panda, Pradyut; Kulda, James M.; Roberts, D. Aaron (Springer and The Eurographics Association, 1999)
      Visualization of multi-dimensional data is a challenging task. The goal is not the display of multiple data dimensions, but user comprehension of the multi-dimensional data. This paper explores several techniques for ...
    • Efficient Ray Intersection for Visualization and Navigation of Global Terrain using Spheroidal Height-Augmented Quadtrees 

      Wartell, Zachary; Ribarsky, William; Hodges, Larry (Springer and The Eurographics Association, 1999)
      We present an algorithm for efficiently computing ray intersections with multi-resolution global terrain partitioned by spheroidal height-augmented quadtrees. While previous methods support terrain defined on a Cartesian ...
    • Visualization of Molecules with Positional Uncertainty 

      Rheingans, Penny; Joshi, Shrikant (Springer and The Eurographics Association, 1999)
      Designing new and better chemotherapeutic wmpounds requires an understanding of the mechanism by which the drugs exert their biological effects. This involves consideration of the geometry of the active site, determination ...