Now showing items 1-20 of 754

    • 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 ...
    • 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 ...
    • 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, ...
    • 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 ...
    • 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. ...
    • 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, ...
    • 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, ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Interactive Direct Volume Rendering of Time-Varying Data 

      Clyne, John; Dennis, John M. (Springer and The Eurographics Association, 1999)
      Previous efforts aimed at improving direct volume rendering performance have focused largely on time-invariant, 3D data. Little work has been done in the area of interactive direct volume rendering of timevarying data, ...
    • 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 ...
    • 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 ...
    • Exploring Instationary Fluid Flows by Interactive Volume Movies 

      Glau, Thomas (Springer and The Eurographics Association, 1999)
      Volume rendering offers the unique ability to represent inner object data and to realize enclosed structures ""at first glance"". Unlike software-based methods, the use of more and more available specialpurpose hardware ...
    • Fast Volume Rotation using Binary Shear-Warp Factorization 

      Csebfalvi, Balazs (Springer and The Eurographics Association, 1999)
      This paper presents a fast volume rotation technique based on binary shear-warp factorization. Unlike many acceleration algorithms this method does not trade image quality for speed and does not require any specialized ...
    • Internet-Based Front-End to Network Simulator 

      He, Taosong (Springer and The Eurographics Association, 1999)
      We present a Java-based interactive visual interface to network simulators. Having successfully incorporated network visualization technologies, our system provides an effective front-end interface supporting real time ...
    • A Methodology for Comparing Direct Volume Rendering Algorithms Using a Projection-Based Data Level Approach 

      Kim, Kwansik; Pang, Alex (Springer and The Eurographics Association, 1999)
      Identifying and visualizing uncertainty together with the data is a well recognized problem. One of the culprits that introduce uncertainty in the visualization pipeline is the visualization algorithm itself. Uncertainties ...
    • Efficiently Rendering Large Volume Data Using Texture Mapping Hardware 

      Tong, Xin; Wang, Wenping; Tsang, Waiwan; Tang, Zesheng (Springer and The Eurographics Association, 1999)
      Volume rendering with texture mapping hardware is a fast volume rendering method available on high-end workstations. However, limited texture memory often prevents the method from being used to render large volume data ...