Eurovis: Eurographics Conference on Visualization: Recent submissions

Now showing items 661-680 of 762

    • Detecting Critical Regions in Scalar Fields 

      Weber, Gunther H.; Scheuermann, Gerik; Hamann, Bernd (The Eurographics Association, 2003)
      Trivariate data is commonly visualized using isosurfaces or direct volume rendering. When exploring scalar fields by isosurface extraction it is often difficult to choose isovalues that convey "useful" information. The ...

    • ShellSplatting: Interactive Rendering of Anisotropic Volumes 

      Botha, Charl P.; Post, Frits H. (The Eurographics Association, 2003)
      This work presents an extension of shell rendering that is more flexible and yields higher quality volume renderings. Shell rendering consists of efficient data-structures and methods to manipulate and render structures ...

    • Detection of constrictions on closed polyhedral surfaces 

      Hétroy, F.; Attali, D. (The Eurographics Association, 2003)
      We define constrictions on a surface as simple closed geodesic curves, i.e. curves whose length is locally minimal. They can be of great interests in order to cut the surface in smaller parts. In this paper, we present a ...

    • Analysis of the HDAF for Interpolation and Noise Suppression in Volume Rendering 

      Andersson, Kristoffer; Kakadiaris, Ioannis A.; Papadakis, Manos; Kouri, Donald J.; Hoffman, David K. (The Eurographics Association, 2003)
      In this paper, we evaluate the HDAF (Hermite Distributed Approximating Functionals) family of interpolation and derivative functions, with respect to their accuracy for reliable volume rendering, and compare them with other ...

    • Shrouds: Optimal Separating Surfaces for Enumerated Volumes 

      Nielson, Gregory M.; Graf, Gary; Holmes, Ryan; Huang, Adam; Phielipp, Mariano (The Eurographics Association, 2003)
      We describe new techniques for computing a smooth triangular mesh surface that surrounds an enumerated volume consisting of a collection of points from a 3D rectilinear grid. The surface has the topology of an isosurface ...

    • Accelerated Force Computation for Physics-Based Information Visualization 

      Hao, Ming C.; Dayal, Umeshwar; Cotting, Daniel; Holenstein, Thomas; Gross, Markus (The Eurographics Association, 2003)
      Visualization of similarity is an emerging technique for analyzing relation-based data sets. A common way of computing the respective layouts in an information space is to employ a physics-based mass-spring system. Force ...

    • Path Seeds and Flexible Isosurfaces Using Topology for Exploratory Visualization 

      Carr, Hamish; Snoeyink, Jack (The Eurographics Association, 2003)
      Morse theory and the Reeb graph give topological summaries of the behaviour of continuous scalar functions. The contour tree augments the Reeb graph for the isosurfaces in a volume to store seed sets, which are starting ...

    • Isosurfaces on Optimal Regular Samples 

      Carr, Hamish; Theußl, Thomas; Möller, Torsten (The Eurographics Association, 2003)
      Volumetric samples on Cartesian lattices are less efficient than samples on body-centred cubic (BCC) lattices. We show how to construct isosurfaces on BCC lattices using several different algorithms. Since the mesh that ...

    • Visual Hierarchical Dimension Reduction for Exploration of High Dimensional Datasets 

      Yang, J.; Ward, M.O.; Rundensteiner, E.A.; Huang, S. (The Eurographics Association, 2003)
      Traditional visualization techniques for multidimensional data sets, such as parallel coordinates, glyphs, and scatterplot matrices, do not scale well to high numbers of dimensions. A common approach to solving this problem ...

    • Visualizing Spatial Distribution Data Sets 

      Luo, Alison; Kao, David; Pang, Alex (The Eurographics Association, 2003)
      In this paper, we define distributions as a new data type and address the challenges of visualizing spatial distribution data sets. Numerous visualization techniques exist today for dealing with scalar data. That is, there ...

    • Using Graphs for Fast Error Term Approximation of Time-varying Datasets 

      Nuber, C.; LaMar, E. C.; Pascucci, V.; Hamann, B.; Joy, K. I. (The Eurographics Association, 2003)
      We present a method for the efficient computation and storage of approximations of error tables used for error estimation of a region between different time steps in time-varying datasets. The error between two time steps ...

    • An Augmented Fast Marching Method for Computing Skeletons and Centerlines 

      Telea, Alexandru; Wijk, Jarke J. van (The Eurographics Association, 2002)
      We present a simple and robust method for computing skeletons for arbitrary planar objects and centerlines for 3D objects. We augment the Fast Marching Method (FMM) widely used in level set applications 11 by computing the ...

    • An Open Toolkit for Prototyping Reverse Engineering Visualizations 

      Telea, Alexandru; Maccari, Alessandro; Riva, Claudio (The Eurographics Association, 2002)
      Maintenance and evolution of complex software systems (such as mobile telephones) involves activities such as reverse engineering (RE) and software visualization. Although several RE tools exist, we found their architecture ...

    • A Novel Approach To Vortex Core Region Detection 

      Jiang, Ming; Machiraju, Raghu; Thompson, David (The Eurographics Association, 2002)
      In this paper we present a simple and efficient vortex core region detection algorithm based on ideas derived from combinatorial topology. These ideas originated from Sperner s lemma, which by itself is of little value to ...

    • An Evaluation of Information Visualization in Attention-Limited Environments 

      Somervell, Jacob; McCrickard, D. Scott; North, Chris; Shukla, Maulik (The Eurographics Association, 2002)
      People often need to quickly access or maintain awareness of secondary information while busy with other primary tasks. Information visualizations provide rapid, effective access to information, but are generally designed ...

    • Vortex Tracking in Scale-Space 

      Bauer, Dirk; Peikert, Ronald (The Eurographics Association, 2002)
      Scale-space techniques have become popular in computer vision for their capability to access the multiscale information inherently contained in images. We show that the field of flow visualization can benefit from these ...

    • Locating Closed Streamlines in 3D Vector Fields 

      Wischgoll, Thomas; Scheuermann, Gerik (The Eurographics Association, 2002)
      The analysis and visualization of flows is a central problem in visualization. Topology based methods have gained increasing interest in recent years. This article describes a method for the detection of closed streamlines ...

    • Useful Properties of Semantic Depth of Field for Better F+C Visualization 

      Kosara, Robert; Miksch, Silvia; Hauser, Helwig (The Eurographics Association, 2002)
      This paper presents the results of a thorough user study that was performed to assess some features and the general usefulness of Semantic Depth of Field (SDOF). Based on these results, concrete hints are given on how SDOF ...

    • Speech and Gesture Multimodal Control of a Whole Earth 3D Visualization Environment 

      Krum, David M.; Omoteso, Olugbenga; Ribarsky, William; Starner, Thad; Hodges, Larry F. (The Eurographics Association, 2002)
      A growing body of research shows several advantages to multimodal interfaces including increased expressiveness, flexibility, and user freedom. This paper investigates the design of such an interface that integrates speech ...

    • Visualization of Large Web Access Data Sets 

      Hao, Ming C.; Garg, Pankaj; Dayal, Umeshwar; Machiraju, Vijay; Cotting, Daniel (The Eurographics Association, 2002)
      Many real-world e-service applications require analyzing large volumes of transaction data to extract web access information. This paper describes Web Access Visualization (WAV) a system that visually associates the ...