Browsing VisSym02: Joint Eurographics - IEEE TCVG Symposium on Visualization by Title

Now showing items 1-20 of 31

    • Adding a scalar value to texture-based vector field representations by local contrast analysis 

      Sanna, A.; Zunino, C.; Montrucchio, B.; Montuschi, P. (The Eurographics Association, 2002)
      Several algorithms can effectively represent vector fields by texture-based representations, visualizing at most all information on the field: direction, orientation, and local magnitude. An open problem still remains the ...

    • AUFLIC: An Accelerated Algorithm For Unsteady Flow Line Integral Convolution 

      Liu, ZhanPing; II, Robert James Moorhead (The Eurographics Association, 2002)
      UFLIC (Unsteady Flow Line Integral Convolution) is an effective texture synthesis technique to visualize unsteady flow with enhanced temporal coherence, but it is time-consuming to generate. This paper presents an accelerated ...

    • 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 ...

    • Bag-of-Particles as a Deformable Model 

      Stahl, D.; Ezquerra, N.; Turk, G. (The Eurographics Association, 2002)
      We present an interactive, physically-based, elastically deformable model using a particle system to model surfaces with interior volumes that can be haptically felt. Oriented particles used in existing surface-only models, ...

    • Best Quadratic Spline Approximation for Hierarchical Visualization 

      Wiley, D. F.; Childs, H. R.; Hamann, B.; Joy, K. I.; Max, N. L. (The Eurographics Association, 2002)
      We present a method for hierarchical data approximation using quadratic simplicial elements for domain decomposition and field approximation. Higher-order simplicial elements can approximate data better than linear elements. ...

    • Cell-Based First-Hit Ray Casting 

      Neubauer, A.; Mroz, L.; Hauser, H.; Wegenkittl, R. (The Eurographics Association, 2002)
      Cell-based first-hit ray casting is a new technique for fast perspective volume visualization. This technique, based on the well known ray casting algorithm, performs iso-surfacing and supports interactive threshold ...

    • Comparison of Morphological Pyramids for Multiresolution MIP Volume Rendering 

      Roerdink, Jos B.T.M. (The Eurographics Association, 2002)
      We recently proposed a multiresolution representation for maximum intensity projection (MIP) volume rendering based on morphological adjunction pyramids which allow progressive refinement and have the property of perfect ...

    • A Continuous Skeletonization Method Based on Level Sets 

      Rumpf, Martin; Telea, Alexandru (The Eurographics Association, 2002)
      A robust and efficient method in 2D and 3D for the calculation of skeletons for arbitrary objects is presented. The method is based on the calculation of the distance function with respect to the object boundary. This is ...

    • Direct Volume Rendering of Photographic Volumes Using Multi-Dimensional Color-Based Transfer Functions 

      Morris, Christopher J.; Ebert, David (The Eurographics Association, 2002)
      Traditionally, volume rendering of medical data has been comprised of transfer functions that map a scalar value, usually a MRI or CT intensity, to an opacity. Corresponding color maps are either selected regardless of the ...

    • 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 ...

    • Feature-Preserving Volume Filtering 

      Neumann, László; Csébfalvi, Balázs; Viola, Ivan; Mlejnek, Matej; Gröller, Eduard (The Eurographics Association, 2002)
      In this paper a feature-preserving volume filtering method is presented. The basic idea is to minimize a threecomponent global error function penalizing the density and gradient errors and the curvature of the unknown ...

    • A Generic Solution for Hardware-Accelerated Remote Visualization 

      Stegmaier, Simon; Magallón, Marcelo; Ertl, Thomas (The Eurographics Association, 2002)
      This paper presents a generic solution for hardware-accelerated remote visualization that works transparently for all OpenGL-based applications and OpenGL-based scene graphs. Universality is achieved by taking advantage ...

    • Interactive Previewing for Transfer Function Specification in Volume Rendering 

      Botha, Charl P.; Post, Frits H. (The Eurographics Association, 2002)
      This paper presents a new technique for supplying meaningful visual feedback during direct volume rendering transfer function specification. The technique uses meta-data calculated during a pre-processing step to generate ...

    • Interactive Visualization and Steering of CFD Simulations 

      Kreylos, O.; Tesdall, A. M.; Hamanny, B.; Hunter, J. K.; Joy, K. I. (The Eurographics Association, 2002)
      We describe a system that supports real-time interactive visualization of computational fluid dynamics (CFD) simulations. The system allows a user to place and manipulate visualization primitives, such as isolines and ...

    • 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 ...

    • 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 ...

    • Octreemizer: A Hierarchical Approach for Interactive Roaming Through Very Large Volumes 

      Plate, John; Tirtasana, Michael; Carmona, Rhadamés; Fröhlich, Bernd (The Eurographics Association, 2002)
      We have developed a hierarchical paging scheme for handling very large volumetric data sets at interactive frame rates. Our system trades texture resolution for speed and uses effective prediction strategies. We have tested ...

    • 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 ...

    • Parallel and Out-of-core View-dependent Isocontour Visualization Using Random Data Distribution 

      Zhang, Xiaoyu; Bajaj, Chandrajit; Ramachandran, Vijaya (The Eurographics Association, 2002)
      In this paper we describe a parallel and out-of-core view-dependent isocontour visualization algorithm that efficiently extracts and renders the visible portions of an isosurface from large datasets. The algorithm first ...

    • Secondary Task Display Attributes - Optimizing Visualizations for Cognitive Task Suitability and Interference Avoidance 

      Chewar, C. M.; McCrickard, D. Scott; Ndiwalana, Ali; North, Chris; Pryor, Jon; Tessendorf, David (The Eurographics Association, 2002)
      We found that established display design guidelines for focal images cannot be extended to images displayed as a secondary task in a dual-task situation. This paper describes an experiment that determines a new ordering ...