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Primary Classification:
I. Computing Methodologies
I.6 SIMULATION AND MODELING
I.6.0 General


Additional Classification: I. Computing Methodologies
I.3 COMPUTER GRAPHICS
I.3.0 General
I.4 IMAGE PROCESSING AND COMPUTER VISION
I.4.0 General

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Title IEEE Transactions on Visualization and Computer Graphics table of contents archive
PublisherIEEE Educational Activities Department Piscataway, NJ, USA
ISSN: 1077-2626

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IEEE Transactions on Visualization and Computer Graphics

Volume 12 Issue 5, September 2006

Table of Contents
Vis/InfoVis 2006 pre-pages
Page: vispre
doi>10.1109/TVCG.2006.191
Available formats: Publisher SitePublisher Site

These pre-pages to the issue contain a table of contents, a list of supporting organizations, a message from the Editor-in-Chief, the preface, committee and reviewer listings, 2005 visualization awards, and the keynote and capstone addressess for Vis ...
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ASK-GraphView: A Large Scale Graph Visualization System
James Abello, Frank van Ham, Neeraj Krishnan
Pages: 669-676
doi>10.1109/TVCG.2006.120
Available formats: Publisher SitePublisher Site

We describe ASK-GraphView, a node-link-based graph visualization system that allows clustering and interactive navigation of large graphs, ranging in size up to 16 million edges. The system uses a scalable architecture and a series of increasingly sophisticated ...
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MatrixExplorer: a Dual-Representation System to Explore Social Networks
Nathalie Henry, Jean-Daniel Fekete
Pages: 677-684
doi>10.1109/TVCG.2006.160
Available formats: Publisher SitePublisher Site

MatrixExplorer is a network visualization system that uses two representations: node-link diagrams and matrices.Its design comes from a list of requirements formalized after several interviews and a participatory design session conducted with social ...
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Visual Analysis of Multivariate State Transition Graphs
A. Johannes Pretorius, Jarke J. Van Wijk
Pages: 685-692
doi>10.1109/TVCG.2006.192
Available formats: Publisher SitePublisher Site

We present a new approach for the visual analysis of state transition graphs. We deal with multivariate graphs where a number of attributes are associated with every node. Our method provides an interactive attribute-based clustering facility. Clustering ...
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Balancing Systematic and Flexible Exploration of Social Networks
Adam Perer, Ben Shneiderman
Pages: 693-700
doi>10.1109/TVCG.2006.122
Available formats: Publisher SitePublisher Site

Social network analysis (SNA) has emerged as a powerful method for understanding the importance of relationships in networks.However, interactive exploration of networks is currently challenging because: (1) it is difficult to find patterns and comprehend ...
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Multi-Scale Banking to 45 Degrees
Jeffrey Heer, Maneesh Agrawala
Pages: 701-708
doi>10.1109/TVCG.2006.163
Available formats: Publisher SitePublisher Site

In his text Visualizing Data, William Cleveland demonstrates how the aspect ratio of a line chart can affect an analyst's perception of trends in the data. Cleveland proposes an optimization technique for computing the aspect ratio such that the average ...
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Measuring Data Abstraction Quality in Multiresolution Visualizations
Qingguang Cui, Matthew Ward, Elke Rundensteiner, Jing Yang
Pages: 709-716
doi>10.1109/TVCG.2006.161
Available formats: Publisher SitePublisher Site

Data abstraction techniques are widely used in multiresolution visualization systems to reduce visual clutter and facilitate analysis from overview to detail. However, analysts are usually unaware of how well the abstracted data represent the original ...
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Enabling Automatic Clutter Reduction in Parallel Coordinate Plots
Geoffrey Ellis, Alan Dix
Pages: 717-724
doi>10.1109/TVCG.2006.138
Available formats: Publisher SitePublisher Site

We have previously shown that random sampling is an effective clutter reduction technique and that a sampling lens can facilitate focus+context viewing of particular regions. This demands an efficient method of estimating the overlap or occlusion of ...
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Topographic Visualization of Prefix Propagation in the Internet
Pier Francesco Cortese, Giuseppe Di Battista, Antonello Moneta, Maurizio Patrignani, Maurizio Pizzonia
Pages: 725-732
doi>10.1109/TVCG.2006.185
Available formats: Publisher SitePublisher Site

We propose a new metaphor for the visualization of prefixes propagation in the Internet.Such a metaphor is based on the concept of topographic map and allows to put in evidencethe relative importance of the Internet Service Providers (ISPs) involved ...
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Network Visualization by Semantic Substrates
Ben Shneiderman, Aleks Aris
Pages: 733-740
doi>10.1109/TVCG.2006.166
Available formats: Publisher SitePublisher Site

Networks have remained a challenge for information visualization designersbecause of the complex issues of node and link layout coupled with the rich set of tasksthat users present.This paper offers a strategy based on two principles:(1) layouts are ...
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Hierarchical Edge Bundles: Visualization of Adjacency Relations in Hierarchical Data
Danny Holten
Pages: 741-748
doi>10.1109/TVCG.2006.147
Available formats: Publisher SitePublisher Site

A compound graph is a frequently encountered type of data set. Relations are given between items, and a hierarchy is defined on the items as well. We present a new method for visualizing such compound graphs. Our approach is based on visually bundling ...
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Visualization of Geo-spatial Point Sets via Global Shape Transformation and Local Pixel Placement
Christian Panse, Mike Sips, Daniel Keim, Stephen North
Pages: 749-756
doi>10.1109/TVCG.2006.198
Available formats: Publisher SitePublisher Site

In many applications, data is collected and indexed by geo-spatial location. Discovering interesting patterns through visualization is an important way of gaining insight about such data. A previously proposed approach is to apply local placement functions ...
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Worldmapper: The World as You've Never Seen it Before
Danny Dorling, Anna Barford, Mark Newman
Pages: 757-764
doi>10.1109/TVCG.2006.202
Available formats: Publisher SitePublisher Site

This paper describes the Worldmapper Project, which makes use of novel visualization techniques to represent a broad variety of social and economic data about the countries of the world.The goal of the project is to use the map projections known as cartograms ...
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Spatial Analysis of News Sources
Andrew Mehler, Yunfan Bao, Xin Li, Yue Wang, Steven Skiena
Pages: 765-772
doi>10.1109/TVCG.2006.179
Available formats: Publisher SitePublisher Site

People in different places talk about different things. This interest distribution is reflected by the newspaper articles circulated in a particular area. We use data from our large-scale newspaper analysis system (Lydia) to make entity datamaps, a spatial ...
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Dynamic Map Labeling
Ken Been, Eli Daiches, Chee Yap
Pages: 773-780
doi>10.1109/TVCG.2006.136
Available formats: Publisher SitePublisher Site

We address the problem of filtering, selecting and placing labels on a dynamic map, which is characterized by continuous zooming and panning capabilities.This consists of two interrelated issues.The first is to avoid label popping and other artifacts ...
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Visualization of Barrier Tree Sequences
Christian Heine, Gerik Scheuermann, Christoph Flamm, Ivo L. Hofacker, Peter F. Stadler
Pages: 781-788
doi>10.1109/TVCG.2006.196
Available formats: Publisher SitePublisher Site

Dynamical models that explain the formation of spatial structures of RNA molecules have reached a complexity that requires novel visualization methods that help to analyze the validity of these models. Here, we focus on the visualization of so-called ...
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Visualizing Business Data with Generalized Treemaps
Roel Vliegen, Jarke J. van Wijk, Erik-Jan van der Linden
Pages: 789-796
doi>10.1109/TVCG.2006.200
Available formats: Publisher SitePublisher Site

Business data is often presented using simple business graphics.These familiar visualizations are effective for providing overviews,but fall short for the presentation of large amounts of detailedinformation. Treemaps can provide such detail, but are ...
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FacetMap: A Scalable Search and Browse Visualization
Greg Smith, Mary Czerwinski, Brian Meyers, Daniel Robbins, George Robertson, Desney S. Tan
Pages: 797-804
doi>10.1109/TVCG.2006.142
Available formats: Publisher SitePublisher Site

The dominant paradigm for searching and browsing large data stores is text-based: presenting a scrollable list of search results in response to textual search term input. While this works well for the Web, there is opportunity for improvement in the ...
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Visual Exploration of Complex Time-Varying Graphs
Gautam Kumar, Michael Garland
Pages: 805-812
doi>10.1109/TVCG.2006.193
Available formats: Publisher SitePublisher Site

Many graph drawing and visualization algorithms, such as force-directed layout and line-dot rendering, work very well on relatively small and sparse graphs. However, they often produce extremely tangled results and exhibit impractical running times for ...
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Smashing Peacocks Further: Drawing Quasi-Trees from Biconnected Components
Daniel Archambault, Tamara Munzner, David Auber
Pages: 813-820
doi>10.1109/TVCG.2006.177
Available formats: Publisher SitePublisher Site

Quasi-trees, namely graphs with tree-like structure, appear in many application domains, including bioinformatics and computer networks.Our new SPF approach exploits the structure of these graphs with a two-level approach to drawing, where the graph ...
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IPSep-CoLa: An Incremental Procedure for Separation Constraint Layout of Graphs
Tim Dwyer, Yehuda Koren, Kim Marriott
Pages: 821-828
doi>10.1109/TVCG.2006.156
Available formats: Publisher SitePublisher Site

We extend the popular force-directed approach to network (or graph) layout to allow separation constraints, which enforce a minimum horizontal or vertical separation between selected pairs of nodes. This simple class of linear constraints is expressive ...
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User Interaction with Scatterplots on Small Screens - A Comparative Evaluation of Geometric-Semantic Zoom and Fisheye Distortion
Thorsten Buering, Jens Gerken, Harald Reiterer
Pages: 829-836
doi>10.1109/TVCG.2006.187
Available formats: Publisher SitePublisher Site

Existing information-visualization techniques that target small screens are usually limited to exploring a few hundred items. In this article we present a scatterplot tool for Personal Digital Assistants that allows the handling of many thousands of ...
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The Perceptual Scalability of Visualization
Beth Yost, Chris North
Pages: 837-844
doi>10.1109/TVCG.2006.184
Available formats: Publisher SitePublisher Site

Larger, higher resolution displays can be used to increase the scalability of information visualizations. But just how much can scalability increase using larger displays before hitting human perceptual or cognitive limits? Are the same visualization ...
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Complex Logarithmic Views for Small Details in Large Contexts
Joachim Bottger, Michael Balzer, Oliver Deussen
Pages: 845-852
doi>10.1109/TVCG.2006.126
Available formats: Publisher SitePublisher Site

Commonly known detail in context techniques for the two-dimensional Euclidean space enlarge details and shrink their context using mapping functions that introduce geometrical compression. This makes it difficult or even impossible to recognize shapes ...
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Software Design Patterns for Information Visualization
Jeffrey Heer, Maneesh Agrawala
Pages: 853-860
doi>10.1109/TVCG.2006.178
Available formats: Publisher SitePublisher Site

Despite a diversity of software architectures supporting information visualization, it is often difficult to identify, evaluate, and re-apply the design solutions implemented within such frameworks. One popular and effective approach for addressing such ...
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A Pipeline for Computer Aided Polyp Detection
Wei Hong, Feng Qiu, Arie kaufman
Pages: 861-868
doi>10.1109/TVCG.2006.112
Available formats: Publisher SitePublisher Site

We present a novel pipeline for computer-aided detection (CAD) of colonic polyps by integrating texture and shape analysis with volume rendering and conformal colon flattening. Using our automatic method, the 3D polyp detection problem is converted into ...
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Full Body Virtual Autopsies using a State-of-the-art Volume Rendering Pipeline
Patric Ljung, Calle Winskog, Anders Persson, Claes Lundstrom, Anders Ynnerman
Pages: 869-876
doi>10.1109/TVCG.2006.146
Available formats: Publisher SitePublisher Site

This paper presents a procedure for virtual autopsies based on interactive 3D visualizations of large scale, high resolution data from CT-scans of human cadavers. The procedure is described using examples from forensic medicine and the added value and ...
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Real-Time Illustration of Vascular Structures
Felix Ritter, Christian Hansen, Volker Dicken, Olaf Konrad, Bernhard Preim, Heinz-Otto Peitgen
Pages: 877-884
doi>10.1109/TVCG.2006.172
Available formats: Publisher SitePublisher Site

We present real-time vascular visualization methods, which extend on illustrative rendering techniques to particularly accentuate spatial depth and to improve the perceptive separation of important vascular properties such as branching level and supply ...
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Lines of Curvature for Polyp Detection in Virtual Colonoscopy
Lingxiao Zhao, Charl Botha, Javier Bescos, Roel Truyen, Frans Vos, Frits Post
Pages: 885-892
doi>10.1109/TVCG.2006.158
Available formats: Publisher SitePublisher Site

Computer-aided diagnosis (CAD) is a helpful addition to laborious visual inspection for preselection of suspected colonic polyps in virtual colonoscopy. Most of the previous work on automatic polyp detection makes use of indicators based on the scalar ...
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Outlier-Preserving Focus+Context Visualization in Parallel Coordinates
Matej Novotny, Helwig Hauser
Pages: 893-900
doi>10.1109/TVCG.2006.170
Available formats: Publisher SitePublisher Site

Focus+context visualization integrates a visually accentuated representation of selected data items in focus (more details, more opacity, etc.) with a visually deemphasized representation of the rest of the data, i.e., the context. The role of context ...
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Composite Rectilinear Deformation for Stretch and Squish Navigation
James Slack, Tamara Munzner
Pages: 901-908
doi>10.1109/TVCG.2006.127
Available formats: Publisher SitePublisher Site

We present the first scalable algorithm that supports the composition of successive rectilinear deformations.Earlier systems that provided stretch and squish navigation could only handle small datasets.More recent work featuring rubber sheet navigation ...
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Multi-variate, Time Varying, and Comparative Visualization with Contextual Cues
Jonathan Woodring, Han-Wei Shen
Pages: 909-916
doi>10.1109/TVCG.2006.164
Available formats: Publisher SitePublisher Site

Time-varying, multi-variate, and comparative data sets are not easily visualized due to the amount of data that is presented to the user at once. By combining several volumes together with different operators into one visualized volume, the user is able ...
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Multifield-Graphs: An Approach to Visualizing Correlations in Multifield Scalar Data
Natascha Sauber, Holger Theisel, Hans-Peter Seidel
Pages: 917-924
doi>10.1109/TVCG.2006.165
Available formats: Publisher SitePublisher Site

We present an approach to visualizingcorrelations in 3D multifield scalar data. The core of our approach is the computation of correlation fields, which are scalar fields containing the local correlations of subsets of the multiple fields.While the visualization ...
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Saliency-guided Enhancement for Volume Visualization
Youngmin Kim, Amitabh Varshney
Pages: 925-932
doi>10.1109/TVCG.2006.174
Available formats: Publisher SitePublisher Site

Recent research in visual saliency has established a computational measure of perceptual importance. In this paper we present a visual-saliency-based operator to enhance selected regions of a volume. We show how we use such an operator on a user-specified ...
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Importance-Driven Focus of Attention
Ivan Viola, Miquel Feixas, Mateu Sbert, Meister Eduard Groller
Pages: 933-940
doi>10.1109/TVCG.2006.152
Available formats: Publisher SitePublisher Site

This paper introduces a concept for automatic focusing on features within a volumetric data set. The user selects a focus, i.e., object of interest, from a set of pre-defined features. Our system automatically determines the most expressive view on this ...
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ClearView: An Interactive Context Preserving Hotspot Visualization Technique
Jens Kruger, Jens Schneider, Rudiger Westermann
Pages: 941-948
doi>10.1109/TVCG.2006.124
Available formats: Publisher SitePublisher Site

Volume rendered imagery often includes a barrage of 3D information like shape, appearance and topology of complex structures, and it thus quickly overwhelms the user. In particular, when focusing on a specific region a user cannot observe the relationship ...
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Visualization Tools for Vorticity Transport Analysis in Incompressible Flow
Filip Sadlo, Ronald Peikert, Mirjam Sick
Pages: 949-956
doi>10.1109/TVCG.2006.199
Available formats: Publisher SitePublisher Site

Vortices are undesirable in many applications while indispensable in others. It is therefore of common interest to understand their mechanisms of creation. This paper aims at analyzing the transport of vorticity inside incompressible flow. The analysis ...
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Vortex Visualization for Practical Engineering Applications
Monika Jankun-Kelly, Ming Jiang, David Thompson, Raghu Machiraju
Pages: 957-964
doi>10.1109/TVCG.2006.201
Available formats: Publisher SitePublisher Site

In order to understand complex vortical flows in large data sets, we must be able to detect and visualize vortices in an automated fashion. In this paper, we present a feature-based vortex detection and visualization technique that is appropriate for ...
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An Advanced Evenly-Spaced Streamline Placement Algorithm
Zhanping Liu, Robert Moorhead, Joe Groner
Pages: 965-972
doi>10.1109/TVCG.2006.116
Available formats: Publisher SitePublisher Site

This paper presents an advanced evenly-spaced streamline placement algorithm for fast, high-quality, and robust layout of flow lines. A fourth-order Runge-Kutta integrator with adaptive step size and error control is employed for rapid accurate streamline ...
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Fine-grained Visualization Pipelines and Lazy Functional Languages
David Duke, Malcolm Wallace, Rita Borgo, Colin Runciman
Pages: 973-980
doi>10.1109/TVCG.2006.145
Available formats: Publisher SitePublisher Site

The pipeline model in visualization has evolved from a conceptual model of data processing into a widely used architecture for implementing visualization systems. In the process, a number of capabilities have been introduced, including streaming of data ...
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A Novel Visualization Model for Web Search Results
Tien Nguyen, Jun Zhang
Pages: 981-988
doi>10.1109/TVCG.2006.111
Available formats: Publisher SitePublisher Site

This paper presents an interactive visualization system, named WebSearchViz, for visualizing the Web search results and facilitating users' navigation and exploration.The metaphor in our model is the solar system with its planets and asteroids revolving ...
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A Trajectory-Preserving Synchronization Method for Collaborative Visualization
Lewis W. F. Li, Frederick W. B. Li, Rynson W. H. Lau
Pages: 989-996
doi>10.1109/TVCG.2006.114
Available formats: Publisher SitePublisher Site

In the past decade, a lot of research work has been conductedto support collaborative visualization among remote users over thenetworks, allowing them to visualize and manipulate shared data forproblem solving. There are many applications of collaborativevisualization, ...
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Concurrent Visualization in a Production Supercomputing Environment
David Ellsworth, Bryan Green, Chris Henze, Patrick Moran, Timothy Sandstrom
Pages: 997-1004
doi>10.1109/TVCG.2006.128
Available formats: Publisher SitePublisher Site

We describe a concurrent visualization pipeline designed for operation in a production supercomputing environment.The facility was initially developed on the NASA Ames "Columbia" supercomputer for a massively parallel forecast model (GEOS4).During the ...
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Scalable WIM: Effective Exploration in Large-scale Astrophysical Environments
Yinggang Li, Chi-Wing Fu, Andrew Hanson
Pages: 1005-1012
doi>10.1109/TVCG.2006.176
Available formats: Publisher SitePublisher Site

Navigating through large-scale virtual environments such as simulations of the astrophysical Universe is difficult. The huge spatial range of astronomical models and the dominance of empty space make it hard for users to travel across cosmological scales ...
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Using Visual Cues of Contact to Improve Interactive Manipulation of Virtual Objects in Industrial Assembly/Maintenance Simulations
Jean Sreng, Anatole Lecuyer, Christine Megard, Claude Andriot
Pages: 1013-1020
doi>10.1109/TVCG.2006.189
Available formats: Publisher SitePublisher Site

This paper describes a set of visual cues of contact designed to improve the interactive manipulation of virtual objects inindustrial assembly/maintenance simulations. These visual cues display information of proximity, contact and effort between virtualobjects ...
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High-Level User Interfaces for Transfer Function Design with Semantics
Christof Rezk Salama, Maik Keller, Peter Kohlmann
Pages: 1021-1028
doi>10.1109/TVCG.2006.148
Available formats: Publisher SitePublisher Site

Many sophisticated techniques for the visualization of volumetric data such as medical data have been published. While existing techniques are mature from a technical point of view, managing the complexity of visual parameters is still difficult for ...
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LOD Map - A Visual Interface for Navigating Multiresolution Volume Visualization
Chaoli Wang, Han-Wei Shen
Pages: 1029-1036
doi>10.1109/TVCG.2006.159
Available formats: Publisher SitePublisher Site

In multiresolution volume visualization, a visual representation of level-of-detail (LOD) quality is important for us to examine, compare, and validate different LOD selection algorithms. While traditional methods rely on ultimate images for quality ...
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Analyzing Complex FTMS Simulations: a Case Study in High-Level Visualization of Ion Motions
Wojciech Burakiewicz, Robert van Liere
Pages: 1037-1044
doi>10.1109/TVCG.2006.118
Available formats: Publisher SitePublisher Site

Current practice in particle visualization renders particle position data directly onto the screen as points or glyphs. Using a camera placed at a fixed position, particle motions can be visualized by rendering trajectories or by animations. Applying ...
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Detection and Visualization of Defects in 3D Unstructured Models of Nematic Liquid Crystals
Ketan Mehta, T. J. Jankun-Kelly
Pages: 1045-1052
doi>10.1109/TVCG.2006.133
Available formats: Publisher SitePublisher Site

A method for the semi-automatic detection and visualization of defects in models of nematic liquid crystals (NLCs) is introduced; this method is suitable for unstructured models, a previously unsolved problem. The detected defects---also known as \emph{disclinations}---are ...
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Understanding the Structure of the Turbulent Mixing Layer in Hydrodynamic Instabilities
D. Laney, P. -T. Bremer, A. Mascarenhas, P. Miller, V. Pascucci
Pages: 1053-1060
doi>10.1109/TVCG.2006.186
Available formats: Publisher SitePublisher Site

When a heavy fluid is placed above a light fluid, tiny vertical perturbations in the interface create a characteristic structure of rising bubbles and falling spikes known as Rayleigh-Taylor instability. Rayleigh-Taylor instabilities have received much ...
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Hub-based Simulation and Graphics Hardware Accelerated Visualization for Nanotechnology Applications
Wei Qiao, Michael McLennan, Rick Kennell, David Ebert, Gerhard Klimeck
Pages: 1061-1068
doi>10.1109/TVCG.2006.150
Available formats: Publisher SitePublisher Site

The Network for Computational Nanotechnology (NCN) has developed a science gateway at nanoHUB.org for nanotechnology education and research. Remote users can browse through online seminars and courses, and launch sophisticated nanotechnology simulation ...
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Feature Aligned Volume Manipulation for Illustration and Visualization
Carlos Correa, Deborah Silver, Min Chen
Pages: 1069-1076
doi>10.1109/TVCG.2006.144
Available formats: Publisher SitePublisher Site

In this paper we describe a GPU-based technique for creating illustrative visualization through interactive manipulation of volumetric models. It is partly inspired by medical illustrations, where it is common to depict cuts and deformation in order ...
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Exploded Views for Volume Data
Stefan Bruckner, M. Eduard Groller
Pages: 1077-1084
doi>10.1109/TVCG.2006.140
Available formats: Publisher SitePublisher Site

Exploded views are an illustration technique where an object is partitioned into several segments. These segments are displaced to reveal otherwise hidden detail. In this paper we apply the concept of exploded views to volumetric data in order to solve ...
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Caricaturistic Visualization
Peter Rautek, Ivan Viola, M. Eduard Groller
Pages: 1085-1092
doi>10.1109/TVCG.2006.123
Available formats: Publisher SitePublisher Site

Exploded views are an illustration technique where an object is partitioned into several segments. These segments are displaced to reveal otherwise hidden detail. In this paper we apply the concept of exploded views to volumetric data in order to solve ...
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Visual Signatures in Video Visualization
Min Chen, Ralf Botchen, Rudy Hashim, Daniel Weiskopf, Thomas Ertl, Ian Thornton
Pages: 1093-1100
doi>10.1109/TVCG.2006.194
Available formats: Publisher SitePublisher Site

Video visualization is a computation process that extracts meaningful information from original video data sets and conveys the extracted information to users in appropriate visual representations. This paper presents a broad treatment of the subject, ...
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Asynchronous Distributed Calibration for Scalable and Reconfigurable Multi-Projector Displays
Ezekiel S. Bhasker, Pinaki Sinha, Aditi Majumder
Pages: 1101-1108
doi>10.1109/TVCG.2006.121
Available formats: Publisher SitePublisher Site

Centralized techniques have been used until now when automatically calibrating (both geometrically and photometrically) large high-resolution displays created by tiling multiple projectors in a 2D array. A centralized server managed all the projectors ...
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Dynamic View Selection for Time-Varying Volumes
Guangfeng Ji, Han-Wei Shen
Pages: 1109-1116
doi>10.1109/TVCG.2006.137
Available formats: Publisher SitePublisher Site

Animation is an effective way to show how time-varying phenomena evolve over time. A key issue of generating a good animation is to select ideal views through which the user can perceive the maximum amount of information from the time-varying dataset. ...
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Enhancing Depth Perception in Translucent Volumes
Marta Kersten, James Stewart, Niko Troje, Randy Ellis
Pages: 1117-1124
doi>10.1109/TVCG.2006.139
Available formats: Publisher SitePublisher Site

We present empirical studies that consider the effects of stereopsis and simulated aerial perspective on depth perception in translucent volumes.We consider a purely absorptive lighting model, in which light is not scattered or reflected, but is simply ...
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Texturing of Layered Surfaces for Optimal Viewing
Alethea Bair, Donald H. House, Colin Ware
Pages: 1125-1132
doi>10.1109/TVCG.2006.183
Available formats: Publisher SitePublisher Site

This paper is a contribution to the literature on perceptually optimal visualizations of layered three-dimensional surfaces. Specifically, we develop guidelines for generating texture patterns, which, when tiled on two overlapped surfaces, minimize confusion ...
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Subjective Quantification of Perceptual Interactions among some 2D Scientific Visualization Methods
Daniel Acevedo, David Laidlaw
Pages: 1133-1140
doi>10.1109/TVCG.2006.180
Available formats: Publisher SitePublisher Site

We present an evaluation of a parameterized set of 2D icon-based visualization methods where we quantified how perceptual interactions among visual elements affect efficient data exploration. During the experiment, subjects quantified three different ...
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Occlusion-Free Animation of Driving Routes for Car Navigation Systems
Shigeo Takahashi, Kenichi Yoshida, Kenji Shimada, Tomoyuki Nishita
Pages: 1141-1148
doi>10.1109/TVCG.2006.167
Available formats: Publisher SitePublisher Site

This paper presents a method for occlusion-free animation of geographical landmarks, and its application to a new type of car navigation system in which driving routes of interest are always visible in mountain areas.This is achieved by animating a nonperspective ...
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Interactive Visualization of Intercluster Galaxy Structures in the Horologium-Reticulum Supercluster
Jameson Miller, Cory Quammen, Matthew Fleenor
Pages: 1149-1156
doi>10.1109/TVCG.2006.155
Available formats: Publisher SitePublisher Site

We present GyVe, an interactive visualization tool for understanding structure in sparse three-dimensional (3D) point data. The scientific goal driving the tool's development is to determine the presence of filaments and voids as defined by inferred ...
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An Atmospheric Visual Analysis and Exploration System
Yuyan Song, Jing Ye, Nikolai Svakhine, Sonia Lasher-Trapp, Mike Baldwin, David Ebert
Pages: 1157-1164
doi>10.1109/TVCG.2006.117
Available formats: Publisher SitePublisher Site

Meteorological research involves the analysis of multi-field, multi-scale, and multi-source data sets. In order to better understand these data sets, models and measurements at different resolutions must be analyzed. Unfortunately, traditional atmospheric ...
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Visualization of Fibrous and Thread-like Data
Zeki Melek, David Mayerich, Cem Yuksel, John Keyser
Pages: 1165-1172
doi>10.1109/TVCG.2006.197
Available formats: Publisher SitePublisher Site

Thread-like structures are becoming more common in modern volumetric data sets as our ability to image vascular and neural tissue at higher resolutions improves. The thread-like structures of neurons and micro-vessels pose a unique problem in visualization ...
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Comparative Visualization for Wave-based and Geometric Acoustics
Eduard Deines, Martin Bertram, Jan Mohring, Jevgenij Jegorovs, Frank Michel, Hans Hagen, Gregory M. Nielson
Pages: 1173-1180
doi>10.1109/TVCG.2006.125
Available formats: Publisher SitePublisher Site

We present a comparative visualization of the acoustic simulation results obtained by two different approaches that were combined into a single simulation algorithm. The rst method solves the wave equation on a volume grid based on nite elements. The ...
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Hybrid Visualization for White Matter Tracts using Triangle Strips and Point Sprites
Dorit Merhof, Markus Sonntag, Frank Enders, Christopher Nimsky, Peter Hastreiter, Guenther Greiner
Pages: 1181-1188
doi>10.1109/TVCG.2006.151
Available formats: Publisher SitePublisher Site

Diffusion tensor imaging is of high value in neurosurgery, providing information about the location of white matter tracts in the human brain. For their reconstruction, streamline techniques commonly referred to as fiber tracking model the underlying ...
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Analyzing Vortex Breakdown Flow Structures by Assignment of Colors to Tensor Invariants
Markus Rutten, Min S. Chong
Pages: 1189-1196
doi>10.1109/TVCG.2006.119
Available formats: Publisher SitePublisher Site

Topological methods are often used to describe flow structures in fluid dynamics and topological flow field analysis usually relies on the invariants of the associated tensor fields. A visual impression of the local properties of tensor fields is often ...
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Superellipsoid-based, Real Symmetric Traceless Tensor Glyphs Motivated by Nematic Liquid Crystal Alignment Visualization
T. J. Jankun-Kelly, Ketan Mehta
Pages: 1197-1204
doi>10.1109/TVCG.2006.181
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A glyph-based method for visualizing the nematic liquid crystal alignment tensor is introduced. Unlike previous approaches, the glyph is based upon physically-linked metrics, not offsets of the eigenvalues. These metrics, combined with a set of superellipsoid ...
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High-Quality Extraction of Isosurfaces from Regular and Irregular Grids
John Schreiner, Carlos Scheidegger, Claudio Silva
Pages: 1205-1212
doi>10.1109/TVCG.2006.149
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Isosurfaces are ubiquitous in many fields, including visualization, graphics, and vision. They are often the main computational component of important processing pipelines (e.g. , surface reconstruction), and are heavily used in practice. The classical ...
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Mesh Layouts for Block-Based Caches
Sung-Eui Yoon, Peter Lindstrom
Pages: 1213-1220
doi>10.1109/TVCG.2006.162
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Current computer architectures employ caching to improve the performance of a wide variety of applications.One of the main characteristics of such cache schemes is the use of block fetching whenever an uncached data element is accessed.To maximize the ...
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Out-of-Core Remeshing of Large Polygonal Meshes
Minsu Ahn, Igor Guskov, Seungyong Lee
Pages: 1221-1228
doi>10.1109/TVCG.2006.169
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We propose an out-of-core method for creating semi-regular surface representations from large input surface meshes. Our approach is based on a streaming implementation of the MAPS remesher of Lee et al. Our remeshing procedure consists of two stages. ...
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Interactive Point-Based Rendering of Higher-Order Tetrahedral Data
Yuan Zhou, Michael Garland
Pages: 1229-1236
doi>10.1109/TVCG.2006.154
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Computational simulations frequently generate solutions defined over very large tetrahedral volume meshes containing many millions of elements. Furthermore, such solutions may often be expressed using non-linear basis functions.Certain solution techniques, ...
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Ambient Occlusion and Edge Cueing for Enhancing Real Time Molecular Visualization
Marco Tarini, Paolo Cignoni, Claudio Montani
Pages: 1237-1244
doi>10.1109/TVCG.2006.115
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The paper presents a set of combined techniques to enhance the real-time visualization of simple or complex molecules (up to order of $10^6$ atoms) space fill mode. The proposed approach includes an innovative technique for efficient computation and ...
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Fast and Efficient Compression of Floating-Point Data
Peter Lindstrom, Martin Isenburg
Pages: 1245-1250
doi>10.1109/TVCG.2006.143
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Large scale scientific simulation codes typically run on a cluster of CPUs that write/read time steps to/from a single file system. As data sets are constantly growing in size, this increasingly leads to I/O bottlenecks. When the rate at which data is ...
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Visualization and Analysis of Large Data Collections: a Case Study Applied to Confocal Microscopy Data
Wim de Leeuw, Pernette Verschure, Robert van Liere
Pages: 1251-1258
doi>10.1109/TVCG.2006.195
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In this paper we propose an approach in which interactive visualization and analysis are combined with batch tools for the processing of large data collections. Large and heterogeneous data collections are difficult to analyze and pose specific problems ...
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On Histograms and Isosurface Statistics
Hamish Carr, Duffy Brian, Denby Brian
Pages: 1259-1266
doi>10.1109/TVCG.2006.168
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In this paper, we show that histograms represent spatial function distributions with a nearest neighbour interpolation. We confirm that this results in systematic underrepresentation of transitional features of the data, and provide new insight why this ...
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Interactive Point-based Isosurface Exploration and High-quality Rendering
Haitao Zhang, Arie Kaufman
Pages: 1267-1274
doi>10.1109/TVCG.2006.153
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We present an efficient point-based isosurface exploration system with high quality rendering. Our system incorporates two point-based isosurface extraction and visualization methods: edge splatting and the edge kernel method. In a volume, two neighboring ...
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Using Difference Intervals for Time-Varying Isosurface Visualization
Kenneth W. Waters, Christopher S. Co, Kenneth I. Joy
Pages: 1275-1282
doi>10.1109/TVCG.2006.188
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We present a novel approach to out-of-core time-varying isosurface visualization. We attempt to interactively visualize time-varying datasets which are too large to fit into main memory using a technique which is dramatically different from existing ...
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Isosurface Extraction and Spatial Filtering using Persistent Octree (POT)
Qingmin Shi, Joseph JaJa
Pages: 1283-1290
doi>10.1109/TVCG.2006.157
Available formats: Publisher SitePublisher Site

We propose a novel Persistent OcTree (POT) indexing structure for accelerating isosurface extraction and spatial filtering from volumetric data. This data structure efficiently handles a wide range of visualization problems such as the generation of ...
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Scalable Data Servers for Large Multivariate Volume Visualization
Markus Glatter, Jian Huang, Jinzhu Gao, Colin Mollenhour
Pages: 1291-1298
doi>10.1109/TVCG.2006.175
Available formats: Publisher SitePublisher Site

Volumetric datasets with multiple variables on each voxel over multiple time steps are often complex, especially when considering the exponentially large attribute space formed by the variables in combination with the spatial and temporal dimensions. ...
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Distributed Shared Memory for Roaming Large Volumes
Laurent Castanie, Christophe Mion, Xavier Cavin, Bruno Levy
Pages: 1299-1306
doi>10.1109/TVCG.2006.135
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We present a cluster-based volume rendering system for roaming very large volumes. This system allows to move a gigabyte-sized probe inside a total volume of several tens or hundreds of gigabytes in real-time. While the size of the probe is limited by ...
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Progressive Volume Rendering of Large Unstructured Grids
Steven P. Callahan, Louis Bavoil, Valerio Pascucci, Claudio T. Silva
Pages: 1307-1314
doi>10.1109/TVCG.2006.171
Available formats: Publisher SitePublisher Site

We describe a new progressive technique that allows real-time rendering of extremely large tetrahedral meshes.Our approach uses a client-server architecture to incrementally stream portions of the mesh from a server to a client which refines the quality ...
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Representing Higher-Order Singularities in Vector Fields on Piecewise Linear Surfaces
Wan-Chiu Li, Bruno Vallet, Nicolas Ray, Bruno Levy
Pages: 1315-1322
doi>10.1109/TVCG.2006.173
Available formats: Publisher SitePublisher Site

Accurately representing higher-order singularities of vector fields defined on piecewise linear surfaces is a non-trivial problem. In this work, we introduce a concise yet complete interpolation scheme of vector fields on arbitrary triangulated surfaces. ...
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Techniques for the Visualization of Topological Defect Behavior in Nematic Liquid Crystals
Vadim Slavin, Robert Pelcovits, George Loriot, Andrew Callan-Jones, David Laidlaw
Pages: 1323-1328
doi>10.1109/TVCG.2006.182
Available formats: Publisher SitePublisher Site

We present visualization tools for analyzing molecular simulations of liquid crystal (LC) behavior. The simulation data consists of terabytes of data describing the position and orientation of every molecule in the simulated system over time. Condensed ...
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Diffusion Tensor Visualization with Glyph Packing
Gordon Kindlmann, Carl-Fredrik Westin
Pages: 1329-1336
doi>10.1109/TVCG.2006.134
Available formats: Publisher SitePublisher Site

A common goal of multivariate visualization is to enable data inspection at discrete points, while also illustrating the larger-scale continuous structures.In diffusion tensor visualization, glyphs are typically used to meet the first goal, and methods ...
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Extensions of the Zwart-Powell Box Spline for Volumetric Data Reconstruction on the Cartesian Lattice
Alireza Entezari, Torsten Moller
Pages: 1337-1344
doi>10.1109/TVCG.2006.141
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In this article we propose a box spline and its variants for reconstructing volumetric data sampled on the Cartesian lattice. In particular we present a tri-variate box spline reconstruction kernel that is superior to tensor product reconstruction schemes ...
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A Generic and Scalable Pipeline for GPU Tetrahedral Grid Rendering
Joachim Georgii, Rudiger Westermann
Pages: 1345-1352
doi>10.1109/TVCG.2006.110
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Recent advances in algorithms and graphics hardware have opened the possibility to render tetrahedral grids at interactive rates on commodity PCs. This paper extends on this work in that it presents a direct volume rendering method for such grids which ...
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A Spectral Analysis of Function Composition and its Implications for Sampling in Direct Volume Visualization
Steven Bergner, Torsten Moller, Daniel Weiskopf, David J. Muraki
Pages: 1353-1360
doi>10.1109/TVCG.2006.113
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In this paper we investigate the effects of function composition in the form g(f(x)) = h(x) by means of a spectral analysis of h. We decompose the spectral description of h(x) into a scalar product of the spectral description of g(x) and a term that ...
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Vis/InfoVis 2006 back matter
Page: visback
doi>10.1109/TVCG.2006.190
Available formats: Publisher SitePublisher Site

The back matter to this issue contains the cover image credits and the author index.
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