28-Issue 3: Recent submissions

Now showing items 21-40 of 41

    • Context-aware Volume Modeling of Skeletal Muscles 

      Yan, Zhicheng; Chen, Wei; Lu, Aidong; Ebert, David S. (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      This paper presents an interactive volume modeling method that constructs skeletal muscles from an existing volumetric dataset. Our approach provides users with an intuitive modeling interface and produces compelling results ...

    • 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 ...

    • Volume Deformations in Grid-Less Flow Simulations 

      Obermaier, Harald; Hering-Bertram, Martin; Kuhnert, Jörg; Hagen, Hans (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Abstract This paper presents a novel method for the extraction and visualization of volume deformations in grid-less point based flow simulations. Our primary goals are the segmentation of different paths through a mixing ...

    • Hierarchical Vortex Regions in Swirling Flow 

      Petz, Christoph; Kasten, Jens; Prohaska, Steffen; Hege, Hans-Christian (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      We propose a new criterion to characterize hierarchical two-dimensional vortex regions induced by swirling motion. Central to the definition are closed loops that intersect the flow field at a constant angle. The union of ...

    • A Directional Occlusion Shading Model for Interactive Direct Volume Rendering 

      Schott, Mathias; Pegoraro, Vincent; Hansen, Charles; Boulanger, Kévin; Bouatouch, Kadi (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Volumetric rendering is widely used to examine 3D scalar fields from CT/MRI scanners and numerical simulation datasets. One key aspect of volumetric rendering is the ability to provide perceptual cues to aid in understanding ...

    • Fused Multi-Volume DVR using Binary Space Partitioning 

      Lindholm, Stefan; Ljung, Patric; Hadwiger, Markus; Ynnerman, Anders (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Multiple-volume visualization is a growing field in medical imaging providing simultaneous exploration of volumes acquired from varying modalities. However, high complexity results in an increased strain on performance ...

    • Accelerating Volume Raycasting using Proxy Spheres 

      Liu, Baoquan; Clapworthy, Gordon J.; Dong, Feng (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      In this paper, we propose an efficient solution that addresses the performance problems of current single-pass GPU raycasting algorithms. Our paper provides more control over the rendering process by introducing tighter ...

    • 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, ...

    • 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 ...

    • 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 ...

    • The Gödel Engine - An Interactive Approach to Visualization in General Relativity 

      Grave, Frank; Müller, Thomas; Dachsbacher, Carsten; Wunner, Günter (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      We present a methodical new approach to visualize the aspects of general relativity from a self-centered perspective. We focus on the visualization of the Gödel universe, which is an exact solution to Einstein s field ...

    • Direct Visualization of Deformation in Volumes 

      Busking, Stef; Botha, Charl P.; Post, Frits H. (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Deformation is a topic of interest in many disciplines. In particular in medical research, deformations of surfaces and even entire volumetric structures are of interest. Clear visualization of such deformations can lead ...

    • 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 ...

    • 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 ...

    • Bivariate Transfer Functions on Unstructured Grids 

      Song, Yuyan; Chen, Wei; Maciejewski, Ross; Gaither, Kelly P.; Ebert, David S. (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      Multi-dimensional transfer functions are commonly used in rectilinear volume renderings to effectively portray materials, material boundaries and even subtle variations along boundaries. However, most unstructured grid ...

    • 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 ...

    • 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 ...

    • Illuminated 3D Scatterplots 

      Sanftmann, Harald; Weiskopf, Daniel (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      In contrast to 2D scatterplots, the existing 3D variants have the advantage of showing one additional data dimension, but suffer from inadequate spatial and shape perception and therefore are not well suited to display ...

    • Efficient and Adaptive Rendering of 2-D Continuous Scatterplots 

      Bachthaler, Sven; Weiskopf, Daniel (The Eurographics Association and Blackwell Publishing Ltd., 2009)
      We extend the rendering technique for continuous scatterplots to allow for a broad class of interpolation methods within the spatial grid instead of only linear interpolation. To do this, we propose an approach that projects ...

    • 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 ...