Now showing items 1-20 of 38

    • Interactive Visualization for Neck-Dissection Planning 

      Krüger, Arno; Tietjen, Christian; Hintze, Jana; Preim, Bernhard; Hertel, Ilka; Strauß, Gero (The Eurographics Association, 2005)
      In this paper, we present visualization techniques for neck dissection planning. These interventions are carried out to remove lymph node metastasis in the neck region. 3d visualization is intended to explore and to quantify ...
    • Combining Silhouettes, Surface, and Volume Rendering for Surgery Education and Planning 

      Tietjen, Christian; Isenberg, Tobias; Preim, Bernhard (The Eurographics Association, 2005)
      We introduce a flexible combination of volume, surface, and line rendering.We employ object-based edge detection because this allows a flexible parametrization of the generated lines. Our techniques were developed mainly ...
    • Galilean Invariant Extraction and Iconic Representation of Vortex Core Lines 

      Sahner, Jan; Weinkauf, Tino; Hege, Hans-Christian (The Eurographics Association, 2005)
      While vortex region quantities are Galilean invariant, most methods for extracting vortex cores depend on the frame of reference. We present an approach to extracting vortex core lines independently of the frame of reference ...
    • Extending and Simplifying Transfer Function Design in Medical Volume Rendering Using Local Histograms 

      Lundström, Claes; Ljung, Patric; Ynnerman, Anders (The Eurographics Association, 2005)
      Direct Volume Rendering (DVR) is known to be of diagnostic value in the analysis of medical data sets. However, its deployment in everyday clinical use has so far been limited. Two major challenges are that the current ...
    • Localized Flow Analysis of 2D and 3D Vector Fields 

      Wiebel, Alexander; Garth, Christoph; Scheuermann, Gerik (The Eurographics Association, 2005)
      In this paper we present an approach to the analysis of the contribution of a small subregion in a dataset to the global flow. To this purpose, we subtract the potential flow that is induced by the boundary of the sub-domain ...
    • VIS-a-VE: Visual Augmentation for Virtual Environments in Surgical Training 

      Chung, Adrian; Deligianni, Fani; Shah, Pallav; Wells, Athol; Yang, Guang-Zhong (The Eurographics Association, 2005)
      Photo-realistic rendering combined with vision techniques is an important trend in developing next generation surgical simulation devices. Training with simulator is generally low in cost and more efficient than traditional ...
    • Hardware-Accelerated Glyphs for Mono- and Dipoles in Molecular Dynamics Visualization 

      Reina, Guido; Ertl, Thomas (The Eurographics Association, 2005)
      We present a novel visualization method for mono- and dipolar molecular simulations from thermodynamics that takes advantage of modern graphics hardware to interactively render specifically tailored glyphs. Our approach ...
    • Real-Time Advection and Volumetric Illumination for the Visualization of 3D Unsteady Flow 

      Weiskopf, Daniel; Schafhitzel, Tobias; Ertl, Thomas (The Eurographics Association, 2005)
      This paper presents an interactive technique for the dense texture-based visualization of unsteady 3D flow, taking into account issues of computational efficiency and visual perception. High efficiency is achieved by a ...
    • VisBiz: A Business Process Visualization Case Study 

      Hao, Ming; Keim, Daniel A.; Dayal, Umeshwar; Schneidewind, Joern (The Eurographics Association, 2005)
      Business process management involves many parameters and relationships and is modeled as complex business process workflows. A common way to analyze the process data is by using flowcharts. Visual analysis of a largescale ...
    • MoireTrees: Visualization and Interaction for Multi-Hierarchical Data 

      Mohammadi-Aragh, Mahnas Jean; Jankun-Kelly, T. J. (The Eurographics Association, 2005)
      Visualizing hierarchical data is one of the core areas of information visualization. Most of these techniques focus on single hierarchies hierarchies with a single root element and a single path to each element. In contrast, ...
    • High-Quality Volume Rendering with Resampling in the Frequency Domain 

      Artner, Martin; Möller, Torsten; Viola, Ivan; Gröller, Meister E. (The Eurographics Association, 2005)
      This work introduces a volume rendering technique that is conceptually based on the shear-warp factorization. We propose to perform the shear transformation in the frequency domain. Unlike the standard shear-warp algorithm, ...
    • Analysis and Visualization of 3-C PIV Images from HART II using Image Processing Methods 

      Ebling, Julia; Scheuermann, Gerik; Wall, Berend G. van der (The Eurographics Association, 2005)
      In this paper, three-component particle image velocimetry (3-C PIV) measurements within the wake of a helicopter rotor from the HART II test are analyzed. These PIV-images are quite a challenge as the noise due to the ...
    • ArcTrees: Visualizing Relations in Hierarchical Data 

      Neumann, Petra; Schlechtweg, Dr. Stefan; Carpendale, Sheelagh (The Eurographics Association, 2005)
      In this paper we present, ARCTREES, a novel way of visualizing hierarchical and non-hierarchical relations within one interactive visualization. Such a visualization is challenging because it must display hierarchical ...
    • Vector Field Analysis and Visualization through Variational Clustering 

      McKenzie, Alexander; Lombeyda, Santiago V.; Desbrun, Mathieu (The Eurographics Association, 2005)
      Scientific computing is an increasingly crucial component of research in various disciplines. Despite its potential, exploration of the results is an often laborious task, owing to excessively large and verbose datasets ...
    • Dense Geometric Flow Visualization 

      Park, Sung W.; Budge, Brian; Linsen, Lars; Hamann, Bernd; Joy, Kenneth I. (The Eurographics Association, 2005)
      We present a flow visualization technique based on rendering geometry in a dense, uniform distribution. Flow is integrated using particle advection. By adopting ideas from texture-based techniques and taking advantage of ...
    • Spline-Based Gradient Filters For High-Quality Refraction Computations in Discrete Datasets 

      Li, Shengying; Mueller, Klaus (The Eurographics Association, 2005)
      Based on the finding that refraction imposes significantly higher demands onto gradient filters than illumination and shading, we evaluate the family of spline filters as a good alternative to the cubic filters, which so ...
    • High-Quality Rendering of Compressed Volume Data Formats 

      Fout, Nathaniel; Akiba, Hiroshi; Ma, Kwan-Liu; Lefohn, Aaron E.; Kniss, Joe (The Eurographics Association, 2005)
      Rendering directly from packed or compressed volume data formats using graphics hardware has advantages in terms of memory consumption and bandwidth, but results in lower-quality images due to the prohibitive cost of ...
    • Visualization of Computer-Modeled Forests for Forest Management 

      Mohammadi-Aragh, Mahnas Jean; Fujisaki, Ikuko; Irby, Derek; Evans, David; Moorhead, Robert; Roberts, Scott (The Eurographics Association, 2005)
      Forest management is a costly and time-consuming activity. Remote sensing has the potential to improve the process by making it cheaper and more efficient, but only if appropriate characteristics can be determined from ...
    • A Simple and Novel Seed-Set Finding Approach for Iso-Surface Extraction 

      Hung, Chiang-Han; Yang, Chuan-kai (The Eurographics Association, 2005)
      Iso-surface extraction is one of the most important approaches for volume rendering, and iso-contouring is one of the most effective methods for iso-surface extraction. Unlike most other methods having their search domain ...
    • Non-manifold Mesh Extraction from Time-varying Segmented Volumes used for Modeling a Human Heart 

      Bertram, Martin; Reis, Gerd; Lengen, Rolf H. van; Köhn, Sascha; Hagen, Hans (The Eurographics Association, 2005)
      We present a new algorithm extracting and fairing surfaces from segmented volumes composed of multiple materials. In a first pass, the material boundaries in the volume are smoothed considering signed distance functions ...