Now showing items 1-20 of 48

    • 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 ...
    • 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 ...
    • 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 ...
    • 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, ...
    • An Interactive Visual Analytics System for Bridge Management 

      Wang, Xiaoyu; Dou, Wenwen; Chen, Shen-En; Ribarsky, William; Chang, Remco (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Bridges deteriorate over their life cycles and require continuous maintenance to ensure their structural integrity, and in turn, the safety of the public. Maintaining bridges is a multi-faceted operation that requires both ...
    • Coherent Culling and Shading for Large Molecular Dynamics Visualization 

      Grottel, Sebastian; Reina, Guido; Dachsbacher, Carsten; Ertl, Thomas (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Molecular dynamics simulations are a principal tool for studying molecular systems. Such simulations are used to investigate molecular structure, dynamics, and thermodynamical properties, as well as a replacement for, or ...
    • 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. ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Topology-based Smoothing of 2D Scalar Fields with C1-Continuity 

      Weinkauf, Tino; Gingold, Yotam; Sorkine, Olga (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Data sets coming from simulations or sampling of real-world phenomena often contain noise that hinders their processing and analysis. Automatic filtering and denoising can be challenging: when the nature of the noise is ...
    • Multi-layer Depth Peeling by Single-Pass Hardware Rasterisation for Faster Isosurface Raytracing on a GPU 

      Liu, Baoquan; Clapworthy, Gordon J.; Dong, Feng (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Empty-space skipping is an essential acceleration technique for volume rendering. Image-order empty-space skipping is not well suited to GPU implementation, since it must perform checks on, essentially, a per-sample basis, ...
    • Non-iterative Second-order Approximation of Signed Distance Functions for Any Isosurface Representation 

      Molchanov, Vladimir; Rosenthal, Paul; Linsen, Lars (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Signed distance functions (SDF) to explicit or implicit surface representations are intensively used in various computer graphics and visualization algorithms. Among others, they are applied to optimize collision detection, ...
    • Visualization and Analysis-Oriented Reconstruction of Material Interfaces 

      Meredith, Jeremy; Childs, Hank (The Eurographics Association and Blackwell Publishing Ltd., 2010)
      Reconstructing boundaries along material interfaces from volume fractions is a difficult problem, especially because the under-resolved nature of the input data allows for many correct interpretations. Worse, algorithms ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...