Now showing items 21-40 of 51

    • GEMSe: Visualization-Guided Exploration of Multi-channel Segmentation Algorithms 

      Fröhler, Bernhard; Möller, Torsten; Heinzl, Christoph (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      We present GEMSe, an interactive tool for exploring and analyzing the parameter space of multi-channel segmentation algorithms. Our targeted user group are domain experts who are not necessarily segmentation specialists. ...
    • Glyphs for Asymmetric Second-Order 2D Tensors 

      Seltzer, Nicholas; Kindlmann, Gordon (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Tensors model a wide range of physical phenomena. While symmetric tensors are sufficient for some applications (such as diffusion), asymmetric tensors are required, for example, to describe differential properties of fluid ...
    • The Grassmannian Atlas: A General Framework for Exploring Linear Projections of High-Dimensional Data 

      Liu, Shusen; Bremer, Peer-Timo; Jayaraman, Jayaraman Thiagarajan; Wang, Bei; Summa, Brian; Pascucci, Valerio (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Linear projections are one of the most common approaches to visualize high-dimensional data. Since the space of possible projections is large, existing systems usually select a small set of interesting projections by ranking ...
    • Hierarchical Stochastic Neighbor Embedding 

      Pezzotti, Nicola; Höllt, Thomas; Lelieveldt, Boudewijn P. F.; Eisemann, Elmar; Vilanova, Anna (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      In recent years, dimensionality-reduction techniques have been developed and are widely used for hypothesis generation in Exploratory Data Analysis. However, these techniques are confronted with overcoming the trade-off ...
    • How Ordered Is It? On the Perceptual Orderability of Visual Channels 

      Chung, David H. S.; Archambault, Daniel; Borgo, Rita; Edwards, Darren J.; Laramee, Robert S.; Chen, Min (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      The design of effective glyphs for visualisation involves a number of different visual encodings. Since spatial position is usually already specified in advance, we must rely on other visual channels to convey additional ...
    • Interactive 3D Force-Directed Edge Bundling 

      Zielasko, Daniel; Weyers, Benjamin; Hentschel, Bernd; Kuhlen, Torsten W. (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Interactive analysis of 3D relational data is challenging. A common way of representing such data are node-link diagrams as they support analysts in achieving a mental model of the data. However, naïve 3D depictions of ...
    • Location-dependent Generalization of Road Networks Based on Equivalent Destinations 

      Dijk, Thomas C. van; Haunert, Jan-Henrik; Oehrlein, Johannes (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Suppose a user located at a certain vertex in a road network wants to plan a route using a wayfinding map. The user's exact destination may be irrelevant for planning most of the route, because many destinations will be ...
    • MCFTLE: Monte Carlo Rendering of Finite-Time Lyapunov Exponent Fields 

      Günther, Tobias; Kuhn, Alexander; Theisel, Holger (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Traditionally, Lagrangian fields such as finite-time Lyapunov exponents (FTLE) are precomputed on a discrete grid and are ray casted afterwards. This, however, introduces both grid discretization errors and sampling errors ...
    • Parallel Marching Blocks: A Practical Isosurfacing Algorithm for Large Data on Many-Core Architectures 

      Liu, Baoquan; Clapworthy, Gordon J.; Dong, Feng; Wu, Enhua (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Interactive isosurface visualisation has been made possible by mapping algorithms to GPU architectures. However, current state-of-the-art isosurfacing algorithms usually consume large amounts of GPU memory owing to the ...
    • Pathfinder: Visual Analysis of Paths in Graphs 

      Partl, Christian; Gratzl, Samuel; Streit, Marc; Wassermann, Anne-Mai; Pfister, Hanspeter; Schmalstieg, Dieter; Lex, Alexander (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      The analysis of paths in graphs is highly relevant in many domains. Typically, path-related tasks are performed in node-link layouts. Unfortunately, graph layouts often do not scale to the size of many real world networks. ...
    • PhysioEx: Visual Analysis of Physiological Event Streams 

      Kamaleswaran, Rishikesan; Collins, Christopher; James, Andrew; McGregor, Carolyn (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      In this work, we introduce a novel visualization technique, the Temporal Intensity Map, which visually integrates data values over time to reveal the frequency, duration, and timing of significant features in streaming ...
    • Retailoring Box Splines to Lattices for Highly Isotropic Volume Representations 

      Csébfalvi, Balázs; Rácz, Gergely (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      3D box splines are defined by convolving a 1D box function with itself along different directions. In volume visualization, box splines are mainly used as reconstruction kernels that are easy to adapt to various sampling ...
    • Semi-automatic Vortex Flow Classification in 4D PC-MRI Data of the Aorta 

      Meuschke, Monique; Köhler, Benjamin; Preim, Uta; Preim, Bernhard; Lawonn, Kai (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      We present an Aortic Vortex Classification (AVOCLA) that allows to classify vortices in the human aorta semi-automatically. Current medical studies assume a strong relation between cardiovascular diseases and blood flow ...
    • Similarity Voting based Viewpoint Selection for Volumes 

      Tao, Yubo; Wang, Qirui; Chen, Wei; Wu, Yingcai; Lin, Hai (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Previous viewpoint selection methods in volume visualization are generally based on some deterministic measures of viewpoint quality. However, they may not express the familiarity and aesthetic sense of users for features ...
    • Source Inversion by Forward Integration in Inertial Flows 

      Günther, Tobias; Theisel, Holger (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Inertial particles are finite-sized objects traveling with a certain velocity that differs from the underlying carrying flow, i.e., they are mass-dependent and subject to inertia. Their backward integration is in practice ...
    • Space-Time Bifurcation Lines for Extraction of 2D Lagrangian Coherent Structures 

      Machado, Gustavo Mello; Boblest, Sebastian; Ertl, Thomas; Sadlo, Filip (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      We present a novel and efficient technique to extract Lagrangian coherent structures in two-dimensional time-dependent vector fields. We show that this can be achieved by employing bifurcation line extraction in the ...
    • TextDNA: Visualizing Word Usage with Configurable Colorfields 

      Szafir, Danielle Albers; Stuffer, Deidre; Sohail, Yusef; Gleicher, Michael (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Patterns of words used in different text collections can characterize interesting properties of a corpus. However, these patterns are challenging to explore as they often involve complex relationships across many words and ...
    • There is More to Streamgraphs than Movies: Better Aesthetics via Ordering and Lassoing 

      Bartolomeo, Marco Di; Hu, Yifan (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      Streamgraphs were popularized in 2008 when The New York Times used them to visualize box office revenues for 7500 movies over 21 years. The aesthetics of a streamgraph is affected by three components: the ordering of the ...
    • Time-Series Plots Integrated in Parallel-Coordinates Displays 

      Gruendl, Henning; Riehmann, Patrick; Pausch, Yves; Froehlich, Bernd (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      We present a natural extension of two-dimensional parallel-coordinates plots for revealing relationships in time-dependent multi-attribute data by building on the idea that time can be considered as the third dimension. A ...
    • TimeArcs: Visualizing Fluctuations in Dynamic Networks 

      Dang, Tuan Nhon; Pendar, Nick; Forbes, Angus G. (The Eurographics Association and John Wiley & Sons Ltd., 2016)
      In this paper we introduce TimeArcs, a novel visualization technique for representing dynamic relationships between entities in a network. Force-directed layouts provide a way to highlight related entities by positioning ...