Now showing items 261-280 of 762

    • Visualizing Motion Data in Virtual Reality: Understanding the Roles of Animation, Interaction, and Static Presentation 

      Coffey, Dane; Korsakov, Fedor; Ewert, Marcus; Hagh-Shenas, Heleh; Thorson, Lauren; Ellingson, Arin; Nuckley, David; Keefe, Daniel (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present a study of interactive virtual reality visualizations of scientific motions as found in biomechanics experiments. Our approach is threefold. First, we define a taxonomy of motion visualizations organized by the ...
    • Perception of Animated Node-Link Diagrams for Dynamic Graphs 

      Ghani, Sohaib; Elmqvist, Niklas; Yi, Ji Soo (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Effective visualization of dynamic graphs remains an open research topic, and many state-of-the-art tools use animated node-link diagrams for this purpose. Despite its intuitiveness, the effectiveness of animation in ...
    • Comparative Visual Analysis of 2D Function Ensembles 

      Piringer, Harald; Pajer, Stephan; Berger, Wolfgang; Teichmann, Heike (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      In the development process of powertrain systems, 2D function ensembles frequently occur in the context of multirun simulations. An analysis has many facets, including distributions of extracted features, comparisons between ...
    • Porosity Maps - Interactive Exploration and Visual Analysis of Porosity in Carbon Fiber Reinforced Polymers 

      Reh, Andreas; Plank, Bernhard; Kastner, Johann; Gröller, M. Eduard; Heinzl, Christoph (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      In this work a novel method for the characterization of porosity in carbon fiber reinforced polymers (CFRP) is presented. A visualization pipeline for the interactive exploration and visual analysis of CFRP specimens is ...
    • StratomeX: Visual Analysis of Large-Scale Heterogeneous Genomics Data for Cancer Subtype Characterization 

      Lex, Alexander; Streit, Marc; Schulz, Hans-Joerg; Partl, Christian; Schmalstieg, Dieter; Park, Peter J.; Gehlenborg, Nils (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Identification and characterization of cancer subtypes are important areas of research that are based on the integrated analysis of multiple heterogeneous genomics datasets. Since there are no tools supporting this process, ...
    • iVisClustering: An Interactive Visual Document Clustering via Topic Modeling 

      Lee, Hanseung; Kihm, Jaeyeon; Choo, Jaegul; Stasko, John; Park, Haesun (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Clustering plays an important role in many large-scale data analyses providing users with an overall understand- ing of their data. Nonetheless, clustering is not an easy task due to noisy features and outliers existing ...
    • Document Thumbnails with Variable Text Scaling 

      Stoffel, Andreas; Strobelt, Hendrik; Deussen, Oliver; Keim, Daniel A. (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Document reader applications usually offer an overview of the layout for each page as thumbnail views. Reading the text in these becomes impossible when the font size becomes very small. We improve the readability of these ...
    • Semantic Wordification of Document Collections 

      Paulovich, Fernando V.; Toledo, Franklina M. B.; Telles, Guilherme P.; Minghim, Rosane; Nonato, Luis Gustavo (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Word clouds have become one of the most widely accepted visual resources for document analysis and visualization, motivating the development of several methods for building layouts of keywords extracted from textual data. ...
    • Interface Exchange as an Indicator for Eddy Heat Transport 

      Williams, Sean; Petersen, Mark; Hecht, Matthew; Maltrud, Mathew; Patchett, John; Ahrens, James; Hamann, Bernd (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      The ocean contains many large-scale, long-lived vortices, called mesoscale eddies, that are believed to have a role in the transport and redistribution of salt, heat, and nutrients throughout the ocean. Determining this ...
    • Rolled-out Wordles: A Heuristic Method for Overlap Removal of 2D Data Representatives 

      Strobelt, Hendrik; Spicker, Marc; Stoffel, Andreas; Keim, Daniel; Deussen, Oliver (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      When representing 2D data points with spacious objects such as labels, overlap can occur. We present a simple algorithm which modifies the (Mani-)Wordle idea with scan-line based techniques to allow a better placement. We ...
    • Visualization of Advection-Diffusion in Unsteady Fluid Flow 

      Karch, Grzegorz Karol; Sadlo, Filip; Weiskopf, Daniel; Munz, Claus-Dieter; Ertl, Thomas (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Advection has been the standard transport mechanism in flow visualization. Diffusion, in contrast, has not been considered important in visual flow field analysis so far, although it is inherent to many physical processes. ...
    • Nearly Recurrent Components in 3D Piecewise Constant Vector Fields 

      Szymczak, Andrzej; Brunhart-Lupo, Nicholas (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present an algorithm for computing nearly recurrent components, that represent areas of close to circulating or stagnant flow, for 3D piecewise constant (PC) vector fields defined on regular grids. Using a number of ...
    • Automatic Stream Surface Seeding: A Feature Centered Approach 

      Edmunds, Matt; Laramee, Robert S.; Malki, Rami; Masters, Ian; Croft, Nick; Chen, Guoning; Zhang, Eugene (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      The ability to capture and visualize information within the flow poses challenges for visualizing 3D flow fields. Stream surfaces are one of many useful integration based techniques for visualizing 3D flow. However seeding ...
    • Employing 2D Projections for Fast Visual Exploration of Large Fiber Tracking Data 

      Poco, Jorge; Eler, Danilo M.; Paulovich, Fernando; Minghim, Rosane (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Fiber tracts detection is an increasingly common technology for diagnosis and also understanding of brain function. Although tools for tracing and presenting brain fibers are advanced, it is still difficult for physicians ...
    • Biopsy Planner - Visual Analysis for Needle Pathway Planning in Deep Seated Brain Tumor Biopsy 

      Herghelegiu, Paul-Corneliu; Manta, Vasile-Ion; Perin, Radu; Bruckner, Stefan; Gröller, Eduard (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Biopsies involve taking samples from living tissue using a biopsy needle. In current clinical practice they are a first mandatory step before any further medical actions are planned. Performing a biopsy on a deep seated ...
    • Visualization of 4D Blood-Flow Fields by Spatiotemporal Hierarchical Clustering 

      Pelt, Roy van; Jacobs, Sander; Romeny, Bart ter Haar; Vilanova, Anna (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Advancements in the acquisition and modeling of flow fields result in unsteady volumetric flow fields of unprecedented quality. An important example is found in the analysis of unsteady blood-flow data. Preclinical research ...
    • Reliable Adaptive Modelling of Vascular Structures with Non-Circular Cross-Sections 

      Kretschmer, Jan; Beck, Thomas; Tietjen, Christian; Preim, Bernhard; Stamminger, Marc (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Accurate visualizations of complex vascular structures are essential for medical applications, such as diagnosis, therapy planning and medical education. Vascular trees are usually described using centerlines, since they ...
    • Probabilistic Local Features in Uncertain Vector Fields with Spatial Correlation 

      Petz, Christoph; Pöthkow, Kai; Hege, Hans-Christian (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      In this paper methods for extraction of local features in crisp vector fields are extended to uncertain fields. While in a crisp field local features are either present or absent at some location, in an uncertain field ...
    • Vortex Analysis in Uncertain Vector Fields 

      Otto, Mathias; Theisel, Holger (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present an approach to extract and visualize vortex structures in uncertain vector fields. For this, we generalize the concepts of the most common vortex detectors to uncertain vector fields, namely the λ ...
    • Visualization of Global Correlation Structures in Uncertain 2D Scalar Fields 

      Pfaffelmoser, Tobias; Westermann, Rüdiger (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Visualizing correlations, i.e., the tendency of uncertain data values at different spatial positions to change contrarily or according to each other, allows inferring on the possible variations of structures in the data. ...