Now showing items 241-259 of 259

    • Matrix Trees 

      Andrysco, Nathan; Tricoche, Xavier (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We propose a new data representation for octrees and kd-trees that improves upon memory size and algorithm speed of existing techniques. While pointerless approaches exploit the regular structure of the tree to facilitate ...
    • Accelerated Visualization of Dynamic Molecular Surfaces 

      Lindow, Norbert; Baum, Daniel; Prohaska, Steffen; Hege, Hans-Christian (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Molecular surfaces play an important role in studying the interactions between molecules. Visualizing the dynamic behavior of molecules is particularly interesting to gain insights into a molecular system. Only recently ...
    • Real-Time Temporal-Coherent Color Contrast Enhancement for Dichromats 

      Machado, Gustavo Mello; Oliveira, Manuel M. (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We present an automatic image-recoloring technique for enhancing color contrast for dichromats whose computational cost varies linearly with the number of input pixels. Our approach can be efficiently implemented on GPUs, ...
    • Alleviating the Modifiable Areal Unit Problem within Probe-Based Geospatial Analyses 

      Butkiewicz, Thomas; Meentemeyer, Ross K.; Shoemaker, Douglas A.; Chang, Remco; Wartell, Zachary; Ribarsky, William (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We present a probe-based interface for the exploration of the results of a geospatial simulation of urban growth. Because our interface allows the user great freedom in how they choose to define regions-of-interest to ...
    • Hardware-Assisted Projected Tetrahedra 

      Maximo, André; Marroquim, Ricardo; Farias, Ricardo (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We present a flexible and highly efficient hardware-assisted volume renderer grounded on the original Projected Tetrahedra (PT) algorithm. Unlike recent similar approaches, our method is exclusively based on the rasterization ...
    • Space-in-Time and Time-in-Space Self-Organizing Maps for Exploring Spatiotemporal Patterns 

      Andrienko, Gennady; Andrienko, Natalia; Bremm, Sebastian; Schreck, Tobias; Landesberger, Tatiana von; Bak, Peter; Keim, Daniel (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Spatiotemporal data pose serious challenges to analysts in geographic and other domains. Owing to the complexity of the geospatial and temporal components, this kind of data cannot be analyzed by fully automatic methods ...
    • Estimation and Modeling of Actual Numerical Errors in Volume Rendering 

      Kronander, Joel; Unger, Jonas; Möller, Torsten; Ynnerman, Anders (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      In this paper we study the comprehensive effects on volume rendered images due to numerical errors caused by the use of finite precision for data representation and processing. To estimate actual error behavior we conduct ...
    • A Multidirectional Occlusion Shading Model for Direct Volume Rendering 

      oltészová, Veronika; Patel, Daniel; Bruckner, Stefan; Viola, Ivan (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      In this paper, we present a novel technique which simulates directional light scattering for more realistic interactive visualization of volume data. Our method extends the recent directional occlusion shading model by ...
    • GraphDice: A System for Exploring Multivariate Social Networks 

      Bezerianos, Anastasia; Chevalier, Fanny; Dragicevic, Pierre; Elmqvist, Niklas; Fekete, Jean-Daniel (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Social networks collected by historians or sociologists typically have a large number of actors and edge attributes. Applying social network analysis (SNA) algorithms to these networks produces additional attributes such ...
    • Out-of-Core Simplification and Crack-Free LOD Volume Rendering for Irregular Grids 

      Du, Zhiyan; Chiang, Yi-Jen (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We propose a novel out-of-core simplification and level-of-detail (LOD) volume rendering algorithm for large irregular grids represented as tetrahedral meshes. One important feature of our algorithm is that it creates a ...
    • Winding Roads: Routing edges into bundles 

      Lambert, Antoine; Bourqui, Romain; Auber, David (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Visualizing graphs containing many nodes and edges efficiently is quite challenging. Drawings of such graphs generally suffer from visual clutter induced by the large amount of edges and their crossings. Consequently, it ...
    • Image-Based Edge Bundles: Simplified Visualization of Large Graphs 

      Telea, Alexandru; Ersoy, Ozan (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We present a new approach aimed at understanding the structure of connections in edge-bundling layouts. We combine the advantages of edge bundles with a bundle-centric simplified visual representation of a graph s structure. ...
    • SmallWorlds: Visualizing Social Recommendations 

      Gretarsson, Brynjar; O'Donovan, John; Bostandjiev, Svetlin; Hall, Christopher; Höllerer, Tobias (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We present SmallWorlds, a visual interactive graph-based interface that allows users to specify, refine and build item-preference profiles in a variety of domains. The interface facilitates expressions of taste through ...
    • Visualizing Summary Statistics and Uncertainty 

      Potter, Kristin; Kniss, Joe; Riesenfeld, Richard; Johnson, Chris R. (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      The graphical depiction of uncertainty information is emerging as a problem of great importance. Scientific data sets are not considered complete without indications of error, accuracy, or levels of confidence. The visual ...
    • Supporting Exploratory Analysis with the Select and Slice Table 

      Shrinivasan, Yedendra B.; Wijk, Jarke J. van (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      In interactive visualization, selection techniques such as dynamic queries and brushing are used to specify and extract items of interest. In other words, users define areas of interest in data space that often have a clear ...
    • Brushing Moments in Interactive Visual Analysis 

      Kehrer, Johannes; Filzmoser, Peter; Hauser, Helwig (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      We present a systematic study of opportunities for the interactive visual analysis of multi-dimensional scientific data that is based on the integration of statistical aggregations along selected independent data dimensions ...
    • Evaluation of Cluster Identification Performance for Different PCP Variants 

      Holten, Danny; Wijk, Jarke J. van (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Parallel coordinate plots (PCPs) are a well-known visualization technique for viewing multivariate data. In the past, various visual modifications to PCPs have been proposed to facilitate tasks such as correlation and ...
    • An Exploratory Technique for Coherent Visualization of Time-varying Volume Data 

      Tikhonova, Anna; Correa, Carlos D.; Ma, Kwan-Liu (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      The selection of an appropriate global transfer function is essential for visualizing time-varying simulation data. This is especially challenging when the global data range is not known in advance, as is often the case ...
    • Isosurface Similarity Maps 

      Bruckner, Stefan; Möller, Torsten (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      In this paper, we introduce the concept of isosurface similarity maps for the visualization of volume data. Isosurface similarity maps present structural information of a volume data set by depicting similarities between ...