Now showing items 21-40 of 41

    • Instant Volume Visualization using Maximum Intensity Difference Accumulation 

      Bruckner, Stefan; Gröller, M. Eduard (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      It has long been recognized that transfer function setup for Direct Volume Rendering (DVR) is crucial to its usability. However, the task of finding an appropriate transfer function is complex and time-consuming even for ...
    • Interactive Visualization of Function Fields by Range-Space Segmentation 

      Anderson, John C.; Gosink, Luke J.; Duchaineau, Mark A.; Joy, Ken I. (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      We present a dimension reduction and feature extraction method for the visualization and analysis of function field data. Function fields are a class of high-dimensional, multi-variate data in which data samples are ...
    • iPCA: An Interactive System for PCA-based Visual Analytics 

      Jeong, Dong Hyun; Ziemkiewicz, Caroline; Fisher, Brian; Ribarsky, William; Chang, Remco (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Principle Component Analysis (PCA) is a widely used mathematical technique in many fields for factor and trend analysis, dimension reduction, etc. However, it is often considered to be a black box operation whose results ...
    • Lifted Domain Coloring 

      Poelke, Konstantin; Polthier, Konrad (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Complex-valued functions are fundamental objects in complex analysis, algebra, differential geometry and in many other areas such as numerical mathematics and physics. Visualizing complex functions is a non-trivial task ...
    • MultiClusterTree: Interactive Visual Exploration of Hierarchical Clusters in Multidimensional Multivariate Data 

      Long, Tran Van; Linsen, Lars (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Visual analytics of multidimensional multivariate data is a challenging task because of the difficulty in understanding metrics in attribute spaces with more than three dimensions. Frequently, the analysis goal is not to ...
    • On Visualization and Reconstruction from Non-Uniform Point Sets using B-splines 

      Vuçini, Erald; Möller, Torsten; Gröller, M. Eduard (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      In this paper we present a novel framework for the visualization and reconstruction from non-uniform point sets. We adopt a variational method for the reconstruction of 3D non-uniform data to a uniform grid of chosen ...
    • Preconceptions and Individual Differences in Understanding Visual Metaphors 

      Ziemkiewicz, Caroline; Kosara, Robert (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Understanding information visualization is more than a matter of reading a series of data values; it is also a matter of incorporating a visual structure into one s own thinking about a problem. We have proposed visual ...
    • Quasi-interpolation on the Body Centered Cubic Lattice 

      Entezari, Alireza; Mirzargar, Mahsa; Kalantari, Leila (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      This paper introduces a quasi-interpolation method for reconstruction of data sampled on the Body Centered Cubic (BCC) lattice. The reconstructions based on this quasi-interpolation achieve the optimal approximation order ...
    • Scalable, Versatile and Simple Constrained Graph Layout 

      Dwyer, Tim (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      We describe a new technique for graph layout subject to constraints. Compared to previous techniques the proposed method is much faster and scalable to much larger graphs. For a graph with n nodes, m edges and c constraints ...
    • SDViz: A Context-Preserving Interactive Visualization System for Technical Diagrams 

      Woo, Insoo; Kim, SungYe; Maciejewski, Ross; Ebert, David S.; Ropp, Timothy D.; Thomas, Krystal (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      When performing daily maintenance and repair tasks, technicians require access to a variety of technical diagrams. As technicians trace components and diagrams from page-to-page, within and across manuals, the contextual ...
    • Selecting Good Views of High-dimensional Data using Class Consistency 

      Sips, Mike; Neubert, Boris; Lewis, John P.; Hanrahan, Pat (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Abstract Many visualization techniques involve mapping high-dimensional data spaces to lower-dimensional views. Unfortunately, mapping a high-dimensional data space into a scatterplot involves a loss of information; or, ...
    • Semi-Automatic Time-Series Transfer Functions via Temporal Clustering and Sequencing 

      Woodring, Jonathan; Shen, Han-Wei (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      When creating transfer functions for time-varying data, it is not clear what range of values to use for classification, as data value ranges and distributions change over time. In order to generate time-varying transfer ...
    • Smooth Stream Surfaces of Fourth Order Precision 

      Schneider, Dominic; Wiebel, Alexander; Scheuermann, Gerik (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      We introduce a novel technique for the construction of smooth stream surfaces of 4th order precision. While common stream surface techniques use linear interpolation for generating seed points for new streamlines in the ...
    • Splatting the Lines in Parallel Coordinates 

      Zhou, Hong; Cui, Weiwei; Qu, Huamin; Wu, Yingcai; Yuan, Xiaoru; Zhuo, Wei (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      coordinates. Our framework consists of two major components: a polyline splatter for cluster detection and a segment splatter for clutter reduction. The cluster detection is performed by splatting the lines one by one into ...
    • Visual Analysis of Brain Activity from fMRI Data 

      Janoos, Firdaus; Nouanesengsy, Boonthanome; Machiraju, Raghu; Shen, Han Wei; Sammet, Steffen; Knopp, Michael; Mórocz, István Á. (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Classically, analysis of the time-varying data acquired during fMRI experiments is done using static activation maps obtained by testing voxels for the presence of significant activity using statistical methods. The models ...
    • Visualisation of Sensor Data from Animal Movement 

      Grundy, Edward; Jones, Mark W.; Laramee, Robert S.; Wilson, Rory P.; Shepard, Emily L. C. (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      A new area of biological research is identifying and grouping patterns of behaviour in wild animals by analysing data obtained through the attachment of tri-axial accelerometers. As these recording devices become smaller ...
    • A Visualization Based Approach for Digital Signature Authentication 

      Xu, Songhua; Yang, Wenxia; Lau, Francis C.M. (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      We propose a visualization based approach for digital signature authentication. Using our method, the speed and pressure aspects of a digital signature process can be clearly and intuitively conveyed to the user for digital ...
    • Visualization of Vessel Movements 

      Willems, Niels; Wetering, Huub van de; Wijk, Jarke J. van (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      We propose a geographical visualization to support operators of coastal surveillance systems and decision making analysts to get insights in vessel movements. For a possibly unknown area, they want to know where significant ...
    • Visualization Techniques for Schedule Comparison 

      Huang, Dandan; Tory, Melanie; Staub-French, Sheryl; Pottinger, Rachel (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Project schedules are effectively represented by Gantt charts, but comparing multiple versions of a schedule is difficult. To compare versions with current methods, users must search and navigate through multiple large ...
    • Visualizing the Evolution of Compound Digraphs with TimeArcTrees 

      Greilich, Martin; Burch, Michael; Diehl, Stephan (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Compound digraphs are a widely used model in computer science. In many application domains these models evolve over time. Only few approaches to visualize such dynamic compound digraphs exist and mostly use animation to ...