Volume 32 (2013): Recent submissions

Now showing items 141-160 of 255

    • An Information-Theoretic Observation Channel for Volume Visualization 

      Bramon, Roger; Ruiz, Marc; Bardera, Anton; Boada, Imma; Feixas, Miquel; Sbert, Mateu (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Different quality metrics have been proposed in the literature to evaluate how well a visualization represents the underlying data. In this paper, we present a new information-theoretic framework that quantifies the ...

    • Augmenting Visualization with Natural Language Translation of Interaction: A Usability Study 

      Nafari, Maryam; Weaver, Chris (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      As visualization tools get more complicated, users often find it increasingly difficult to learn interaction sequences, recall past queries, and interpret visual states.We examine a query-to-question (Q2Q) supporting system ...

    • Selecting Semantically-Resonant Colors for Data Visualization 

      Lin, Sharon; Fortuna, Julie; Kulkarni, Chinmay; Stone, Maureen; Heer, Jeffrey (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We introduce an algorithm for automatic selection of semantically-resonant colors to represent data (e.g., using blue for data about ''oceans'', or pink for ''love''). Given a set of categorical values and a target color ...

    • Rule-based Visual Mappings - with a Case Study on Poetry Visualization 

      Abdul-Rahman, Alfie; Lein, Julie; Coles, Katharine; Maguire, Eamonn; Meyer, Miriah; Wynne, Martin; Johnson, Chris R.; Trefethen, Anne; Chen, Min (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      In this paper, we present a user-centered design study on poetry visualization. We develop a rule-based solution to address the conflicting needs for maintaining the flexibility of visualizing a large set of poetic variables ...

    • Fingerprint Matrices: Uncovering the Dynamics of Social Networks in Prose Literature 

      Oelke, Daniela; Kokkinakis, Dimitrios; Keim, Daniel A. (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      In prose literature often complex dynamics of interpersonal relationships can be observed between the different characters. Traditionally, node-link diagrams are used to depict the social network of a novel. However, static ...

    • A Primal/ Dual Representation for Discrete Morse Complexes on Tetrahedral Meshes 

      Weiss, Kenneth; Iuricich, Federico; Fellegara, Riccardo; Floriani, Leila De (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We consider the problem of computing discrete Morse and Morse-Smale complexes on an unstructured tetrahedral mesh discretizing the domain of a 3D scalar field. We use a duality argument to define the cells of the descending ...

    • Towards Multifield Scalar Topology Based on Pareto Optimality 

      Huettenberger, Lars; Heine, Christian; Carr, Hamish; Scheuermann, Gerik; Garth, Christoph (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      How can the notion of topological structures for single scalar fields be extended to multifields? In this paper we propose a definition for such structures using the concepts of Pareto optimality and Pareto dominance. Given ...

    • dPSO-Vis: Topology-based Visualization of Discrete Particle Swarm Optimization 

      Volke, Sebastian; Middendorf, Martin; Hlawitschka, Mario; Kasten, Jens; Zeckzer, Dirk; Scheuermann, Gerik (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Particle swarm optimization (PSO) is a metaheuristic that has been applied successfully to many continuous and combinatorial optimization problems, e.g., in the fields of economics, engineering, and natural sciences. In ...

    • Interactive Extraction and Tracking of Biomolecular Surfaces Features 

      Krone, Michael; Reina, Guido; Schulz, Christoph; Kulschewski, Tobias; Pleiss, Jürgen; Ertl, Thomas (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      We present a coordinated-view application for the analysis of molecular surface features like cavities, channels and pockets. Our tool employs object-space ambient occlusion for the detection of such features and tracks ...

    • Streamlines for Illustrative Real-Time Rendering 

      Lawonn, Kai; Moench, Tobias; Preim, Bernhard (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Line drawing techniques are important methods to illustrate shapes. Existing feature line methods, e.g., suggestive contours, apparent ridges, or photic extremum lines, solely determine salient regions and illustrate them ...

    • Visualizing Motional Correlations in Molecular Dynamics using Geometric Deformations 

      Fioravante, Matthew; Shook, Adam; Thorpe, Ian; Rheingans, Penny (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      In macromolecules, an allosteric effect is said to occur when a change at one site of a molecule affects a distant site. Understanding these allosteric effects can be important for understanding how the functions of complex ...

    • Continuous Representation of Projected Attribute Spaces of Multifields over Any Spatial Sampling 

      Molchanov, Vladimir; Fofonov, Alexey; Linsen, Lars (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      For the visual analysis of multidimensional data, dimension reduction methods are commonly used to project to a lower-dimensional visual space. In the context of multifields, i.e., volume data with a multidimensional ...

    • User-driven Feature Space Transformation 

      Mamani, Gladys M. H.; Fatore, Francisco M.; Nonato, Luis G.; Paulovich, Fernando V. (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Interactive visualization systems for exploring and manipulating high-dimensional feature spaces have experienced a substantial progress in the last few years. State-of-art methods rely on solid mathematical and computational ...

    • AOI Rivers for Visualizing Dynamic Eye Gaze Frequencies 

      Burch, Michael; Kull, Andreas; Weiskopf, Daniel (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      It is difficult to explore and analyze eye gaze trajectories for commonly applied visual task solution strategies because such data shows complex spatio-temporal structure. In particular, the traditional eye gaze plots of ...

    • Visualizing Interchange Patterns in Massive Movement Data 

      Zeng, Wei; Fu, Chi-Wing; Arisona, Stefan Müller; Qu, Huamin (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Massive amount of movement data, such as daily trips made by millions of passengers in a city, are widely available nowadays. They are a highly valuable means not only for unveiling human mobility patterns, but also for ...

    • Spatially Efficient Design of Annotated Metro Maps 

      Wu, Hsiang-Yun; Takahashi, Shigeo; Hirono, Daichi; Arikawa, Masatoshi; Lin, Chun-Cheng; Yen, Hsu-Chun (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Annotating metro maps with thumbnail photographs is a commonly used technique for guiding travelers. However, conventional methods usually suffer from small labeling space around the metro stations, especially when they ...

    • AmniVis - A System for Qualitative Exploration of Near-Wall Hemodynamics in Cerebral Aneurysms 

      Neugebauer, Mathias; Lawonn, Kai; Beuing, Oliver; Berg, Philipp; Janiga, Gabor; Preim, Bernhard (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      The qualitative exploration of near-wall hemodynamics in cerebral aneurysms provides important insights for risk assessment. For instance, a direct relation between complex flow patterns and aneurysm formation could be ...

    • Comparative Visualization of Tracer Uptake in In Vivo Small Animal PET/CT Imaging of the Carotid Arteries 

      Diepenbrock, Stefan; Hermann, Sven; Schäfers, Michael; Kuhlmann, Michael; Hinrichs, Klaus (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Cardiovascular diseases are the main cause of death in the western world. Medical research on atherosclerosis is therefore of great interest and a very active research topic. We present a visualization system that supports ...

    • Vessel Visualization using Curvicircular Feature Aggregation 

      Mistelbauer, Gabriel; Morar, Anca; Varchola, Andrej; Schernthaner, Rüdiger; Baclija, Ivan; Köchl, Arnold; Kanitsar, Armin; Bruckner, Stefan; Gröller, Eduard (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Radiological investigations are common medical practice for the diagnosis of peripheral vascular diseases. Existing visualization methods such as Curved Planar Reformation (CPR) depict calcifications on vessel walls to ...

    • Visualizing Robustness of Critical Points for 2D Time-Varying Vector Fields 

      Wang, Bei; Rosen, Paul; Skraba, Primoz; Bhatia, Harsh; Pascucci, Valerio (The Eurographics Association and Blackwell Publishing Ltd., 2013)
      Analyzing critical points and their temporal evolutions plays a crucial role in understanding the behavior of vector fields. A key challenge is to quantify the stability of critical points: more stable points may represent ...