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Displaying 1-50 out of 62 total
The Shape of Shakespeare: Visualizing Text using Implicit Surfaces
Found in: Information Visualization, IEEE Symposium on
By Randall M. Rohrer, John L. Sibert, David S. Ebert
Issue Date:October 1998
pp. 121
Information visualization focuses on the use of visual means for exploring non-visual information. While free-form text is a rich, common source of information, visualization of text is a challenging problem since text is inherently non-spatial. This paper...
 
WordBridge: Using Composite Tag Clouds in Node-Link Diagrams for Visualizing Content and Relations in Text Corpora
Found in: Hawaii International Conference on System Sciences
By KyungTae Kim, Sungahn Ko, Niklas Elmqvist, David S. Ebert
Issue Date:January 2011
pp. 1-8
We introduce WordBridge, a novel graph-based visualization technique for showing relationships between entities in text corpora. The technique is a node-link visualization where both nodes and links are tag clouds. Using these tag clouds, WordBridge can re...
   
Editor's Note
Found in: IEEE Transactions on Visualization and Computer Graphics
By David S. Ebert
Issue Date:April 2003
pp. 188-190
No summary available.
 
Two-handed Interactive Stereoscopic Visualization
Found in: Visualization Conference, IEEE
By David S. Ebert, Christopher D. Shaw, Amen Zwa, Cindy Starr
Issue Date:November 1996
pp. 204
This paper describes a minimally immersive interactive system for visualization of multivariate volumetric data. The system, SFA, uses glyph-based volume rendering which does not suffer the initial costs of isosurface rendering or voxel-based volume render...
 
In Memoriam: Illuminating Our Paths - James (Jim) Joseph Thomas
Found in: IEEE Transactions on Visualization and Computer Graphics
By David S Ebert, John Dill, David J. Kasik
Issue Date:November 2010
pp. xxi
No summary available.
   
Projecting Tetrahedra without Rendering Artifacts
Found in: Visualization Conference, IEEE
By Martin Kraus, Wei Qiao, David S. Ebert
Issue Date:October 2004
pp. 27-34
<p>Hardware-accelerated direct volume rendering of unstructured volumetric meshes is often based on tetrahedral cell projection, in particular, the Projected Tetrahedra (PT) algorithm and its variants. Unfortunately, even implementations of the most ...
 
Interactive Lens Visualization Techniques
Found in: Visualization Conference, IEEE
By Christopher D. Shaw, James A. Hall, David S. Ebert, D. Aaron Roberts
Issue Date:October 1999
pp. 25
This paper describes new techniques for minimally immersive visualization of 3D scalar and vector fields, and visualization of document corpora. In our glyph-based visualization system, the user interacts with the 3D volume of glyphs using a pair of button...
 
A Mobile Visual Analytics Approach for Law Enforcement Situation Awareness
Found in: 2014 IEEE Pacific Visualization Symposium (PacificVis)
By Ahmad M. M. Razip,Abish Malik,Shehzad Afzal,Matthew Potrawski,Ross Maciejewski, Yun Jang,Niklas Elmqvist,David S. Ebert
Issue Date:March 2014
pp. 169-176
The advent of modern smart phones and handheld devices has given analysts, decision-makers, and even the general public the ability to rapidly ingest data and translate it into actionable information on-the-go. In this paper, we explore the design and use ...
 
Visualization of Structured Nonuniform Grids
Found in: IEEE Computer Graphics and Applications
By Kirk Riley, Yuyan Song, Martin Kraus, David S. Ebert, Jason J. Levit
Issue Date:January 2006
pp. 46-55
Although graphics hardware is well suited to accelerate texture-based volume rendering methods for volume visualization of uniform grids, hardware acceleration is less easily exploited for texture-based volume rendering more complex meshes. Meteorological ...
 
Guest Editor's Introduction: Special Section on Visualization
Found in: IEEE Transactions on Visualization and Computer Graphics
By David S. Ebert
Issue Date:April 2000
pp. 97
No summary available.
 
Generating Synthetic Syndromic-Surveillance Data for Evaluating Visual-Analytics Techniques
Found in: IEEE Computer Graphics and Applications
By Ross Maciejewski, Ryan Hafen, Stephen Rudolph, George Tebbetts, William S. Cleveland, Shaun J. Grannis, David S. Ebert
Issue Date:May 2009
pp. 18-28
This system generates synthetic syndromic-surveillance data for evaluating visualization and visual-analytics techniques. Modeling data from emergency room departments, the system generates two years of patient data, into which system users can inject spat...
 
Volume Illustration of Muscle from Diffusion Tensor Images
Found in: IEEE Transactions on Visualization and Computer Graphics
By Wei Chen, Zhicheng Yan, Song Zhang, John Allen Crow, David S. Ebert, Ronald M. McLaughlin, Katie B. Mullins, Robert Cooper, Zi'ang Ding, Jun Liao
Issue Date:November 2009
pp. 1425-1432
Medical illustration has demonstrated its effectiveness to depict salient anatomical features while hiding the irrelevant details. Current solutions are ineffective for visualizing fibrous structures such as muscle, because typical datasets (CT or MRI) do ...
 
A Visual Analytics Approach to Understanding Spatiotemporal Hotspots
Found in: IEEE Transactions on Visualization and Computer Graphics
By Ross Maciejewski, Stephen Rudolph, Ryan Hafen, Ahmad M. Abusalah, Mohamed Yakout, Mourad Ouzzani, William S. Cleveland, Shaun J. Grannis, David S. Ebert
Publication Date: August 2009
pp. 205-220
As data sources become larger and more complex, the ability to effectively explore and analyze patterns among varying sources becomes a critical bottleneck in analytic reasoning. Incoming data contain multiple variables, high signal-to-noise ratio, and a d...
 
A correlative analysis process in a visual analytics environment
Found in: 2012 IEEE Conference on Visual Analytics Science and Technology (VAST)
By Abish Malik,Ross Maciejewski,Niklas Elmqvist,Yun Jang,David S. Ebert,Whitney Huang
Issue Date:October 2012
pp. 33-42
Finding patterns and trends in spatial and temporal datasets has been a long studied problem in statistics and different domains of science. This paper presents a visual analytics approach for the interactive exploration and analysis of spatiotemporal corr...
 
The 15th Anniversary of the IEEE Transactions on Visualization and Computer Graphics: Celebrating a Success Story
Found in: IEEE Transactions on Visualization and Computer Graphics
By Arie E. Kaufman, Hans Hagen, David S. Ebert
Issue Date:September 2009
pp. 705-706
An editorail on the 15th Anniversary of the IEEE Transactions on Visualization and Computer Graphics.
 
Editor's Note
Found in: IEEE Transactions on Visualization and Computer Graphics
By David S. Ebert
Issue Date:July 2006
pp. 417-418
No summary available.
 
Editor's Note
Found in: IEEE Transactions on Visualization and Computer Graphics
By David S. Ebert
Issue Date:January 2006
pp. 1
No summary available.
 
Spatiotemporal social media analytics for abnormal event detection and examination using seasonal-trend decomposition
Found in: 2012 IEEE Conference on Visual Analytics Science and Technology (VAST)
By Junghoon Chae,Dennis Thom,Harald Bosch,Yun Jang,Ross Maciejewski,David S. Ebert,Thomas Ertl
Issue Date:October 2012
pp. 143-152
Recent advances in technology have enabled social media services to support space-time indexed data, and internet users from all over the world have created a large volume of time-stamped, geo-located data. Such spatiotemporal data has immense value for in...
 
An Overview of the Technology Assisted Dietary Assessment Project at Purdue University
Found in: Multimedia, International Symposium on
By Nitin Khanna, Carol J. Boushey, Deborah Kerr, Martin Okos, David S. Ebert, Edward J. Delp
Issue Date:December 2010
pp. 290-295
In this paper, we describe the Technology Assisted Dietary Assessment (TADA) project at Purdue University. Dietary intake, what someone eats during the course of a day, provides valuable insights for mounting intervention programs for prevention of many ch...
 
LAHVA: Linked Animal-Human Health Visual Analytics
Found in: Symposium On Visual Analytics Science And Technology
By Ross Maciejewski, Benjamin Tyner, Yun Jang, Cheng Zheng, Rimma V. Nehme, David S. Ebert, William S. Cleveland, Mourad Ouzzani, Shaun J. Grannis, Lawrence T. Glickman
Issue Date:November 2007
pp. 27-34
Coordinated animal-human health monitoring can provide an early warning system with fewer false alarms for naturally occurring disease outbreaks, as well as biological, chemical and environmental incidents. This monitoring requires the integration and anal...
 
Visual Analytics on Mobile Devices for Emergency Response
Found in: Symposium On Visual Analytics Science And Technology
By Sung Ye Kim, Yun Jang, Angela Mellema, David S. Ebert, Timothy Collinss
Issue Date:November 2007
pp. 35-42
Using mobile devices for visualization provides a ubiquitous environment for accessing information and effective decision making. These visualizations are critical in satisfying the knowledge needs of operators in areas as diverse as education, business, l...
 
VolQD: Direct Volume Rendering of Multi-million Atom Quantum Dot Simulations
Found in: Visualization Conference, IEEE
By Wei Qiao, David S. Ebert, Alireza Entezari, Marek Korkusinski, Gerhard Klimeck
Issue Date:October 2005
pp. 41
<p>In this work we present a hardware-accelerated direct volume rendering system for visualizing multivariate wave functions in semiconducting quantum dot (QD) simulations. The simulation data contains the probability density values of multiple elect...
 
An Experimental Study of Financial Portfolio Selection with Visual Analytics for Decision Support
Found in: Hawaii International Conference on System Sciences
By Anya Savikhin, Hon Cheong Lam, Brian Fisher, David S. Ebert
Issue Date:January 2011
pp. 1-10
We investigate the decision process as applied to the practical task of choosing a financial portfolio. We developed PortfolioCompare, an interactive visual analytic decision support tool that helps the consumer quickly create, compare and choose among sev...
   
Spatial Text Visualization Using Automatic Typographic Maps
Found in: IEEE Transactions on Visualization and Computer Graphics
By Shehzad Afzal,Ross Maciejewski,Yun Jang,Niklas Elmqvist,David S. Ebert
Issue Date:December 2012
pp. 2556-2564
We present a method for automatically building typographic maps that merge text and spatial data into a visual representation where text alone forms the graphical features. We further show how to use this approach to visualize spatial data such as traffic ...
 
Editor's Note
Found in: IEEE Transactions on Visualization and Computer Graphics
By David S. Ebert
Issue Date:September 2004
pp. 545-547
reg
 
Editor's Note
Found in: IEEE Transactions on Visualization and Computer Graphics
By David S. Ebert
Issue Date:January 2004
pp. 1
No summary available.
 
Forecasting Hotspots—A Predictive Analytics Approach
Found in: IEEE Transactions on Visualization and Computer Graphics
By Ross Maciejewski, Ryan Hafen, Stephen Rudolph, Stephen G. Larew, Michael A. Mitchell, William S. Cleveland, David S. Ebert
Issue Date:April 2011
pp. 440-453
Current visual analytics systems provide users with the means to explore trends in their data. Linked views and interactive displays provide insight into correlations among people, events, and places in space and time. Analysts search for events of interes...
 
Time-Varying Data Visualization Using Functional Representations
Found in: IEEE Transactions on Visualization and Computer Graphics
By Yun Jang,David S. Ebert,Kelly Gaither
Issue Date:March 2012
pp. 421-433
In many scientific simulations, the temporal variation and analysis of features are important. Visualization and visual analysis of time series data is still a significant challenge because of the large volume of data. Irregular and scattered time series d...
 
Illustration-Inspired Depth Enhanced Volumetric Medical Visualization
Found in: IEEE Transactions on Visualization and Computer Graphics
By Nikolai A. Svakhine, David S. Ebert, William M. Andrews
Issue Date:January 2009
pp. 77-86
Volume illustration can be used to provide insight into source data from CT/MRI scanners in much the same way as medical illustration depicts the important details of anatomical structures. As such, proven techniques used in medical illustration should be ...
 
Illustrative Interactive Stipple Rendering
Found in: IEEE Transactions on Visualization and Computer Graphics
By Aidong Lu, Christopher J. Morris, Joe Taylor, David S. Ebert, Charles Hansen, Penny Rheingans, Mark Hartner
Issue Date:April 2003
pp. 127-138
<p><b>Abstract</b>—Simulating hand-drawn illustration can succinctly express information in a manner that is communicative and informative. We present a framework for an interactive direct stipple rendering of volume and surface-based obj...
 
VASA: Interactive Computational Steering of Large Asynchronous Simulation Pipelines for Societal Infrastructure
Found in: IEEE Transactions on Visualization and Computer Graphics
By Sungahn Ko,Jieqiong Zhao,Jing Xia,Shehzad Afzal,Xiaoyu Wang,Greg Abram,Niklas Elmqvist,Len Kne,David Van Riper,Kelly Gaither,Shaun Kennedy,William Tolone,William Ribarsky,David S. Ebert
Issue Date:February 2015
pp. 1
We present VASA, a visual analytics platform consisting of a desktop application, a component model, and a suite of distributed simulation components for modeling the impact of societal threats such as weather, food contamination, and traffic on critical i...
 
Feature-Driven Data Exploration for Volumetric Rendering
Found in: IEEE Transactions on Visualization and Computer Graphics
By Insoo Woo,Ross Maciejewski,Kelly P. Gaither,David S. Ebert
Issue Date:October 2012
pp. 1731-1743
We have developed an intuitive method to semiautomatically explore volumetric data in a focus-region-guided or value-driven way using a user-defined ray through the 3D volume and contour lines in the region of interest. After selecting a point of interest ...
 
Measuring Stipple Aesthetics in Hand-Drawn and Computer-Generated Images
Found in: IEEE Computer Graphics and Applications
By Ross Maciejewski, Tobias Isenberg, William M. Andrews, David S. Ebert, Mario Costa Sousa, Wei Chen
Issue Date:March 2008
pp. 62-74
When people compare a computer-generated illustration to a hand-drawn illustration of the same object, they usually perceive differences. This seems to indicate that the two kinds of images follow different aesthetic principles. To explore and explain thes...
 
Minimally Immersive Flow Visualization
Found in: IEEE Transactions on Visualization and Computer Graphics
By David S. Ebert, Christopher D. Shaw
Issue Date:October 2001
pp. 343-350
<p><b>Abstract</b>—This paper describes a minimally immersive interactive system for flow visualization of multivariate volumetric data. The system, SFA, uses perceptually motivated rendering to increase the quantity and clarity of inform...
 
Interactive Illustrative Rendering on Mobile Devices
Found in: IEEE Computer Graphics and Applications
By Jingshu Huang, Brian Bue, Avin Pattath, David S. Ebert, Krystal M. Thomas
Issue Date:May 2007
pp. 48-56
Illustrative rendering is a widely used visualization technique to display conceptual information, describe problems, and give insight to solve them efficiently in science, engineering, and the arts. Providing users with automated tools to generate illustr...
 
Hardware-Assisted Feature Analysis and Visualization of Procedurally Encoded Multifield Volumetric Data
Found in: IEEE Computer Graphics and Applications
By Manfred Weiler, Ralf Botchen, Simon Stegmaier, Thomas Ertl, Jingshu Huang, Yun Jang, David S. Ebert, Kelly P. Gaither
Issue Date:September 2005
pp. 72-81
Procedural encoding of scattered and unstructured scalar datasets using radial basis functions (RBFs) is an active area of research with great potential for compactly representing large data sets. This reduced storage requirement lets the compressed data s...
 
Introduction to Visualization and Analytics for Decision Support, Operational Management, and Scientific Discovery Minitrack
Found in: 2014 47th Hawaii International Conference on System Sciences (HICSS)
By David S. Ebert,Thomas Ertl,Kelly Gaither
Issue Date:January 2014
pp. 1353
The topic of this minitrack will have applications in a broad range of situations where human expertise must be brought to bear on problems characterized by massive datasets and data that are uncertain in fact, relevance, location in space and position in ...
   
Visualization and Computer Graphics on Isotropically Emissive Volumetric Displays
Found in: IEEE Transactions on Visualization and Computer Graphics
By Benjamin Mora, Ross Maciejewski, Min Chen, David S. Ebert
Issue Date:March 2009
pp. 221-234
The availability of commodity volumetric displays provides ordinary users with a new means of visualizing 3D data. Many of these displays are in the class of isotropically emissive light devices, which are designed to directly illumi-nate voxels in a 3D fr...
 
Illustration Motifs for Effective Medical Volume Illustration
Found in: IEEE Computer Graphics and Applications
By Nikolai Svakhine, David S. Ebert, Don Stredney
Issue Date:May 2005
pp. 31-39
The main goal of visualization and rendering is to effectively convey information to the viewer. For scientific visualization, this goal translates into determining which portions of data to highlight and how to render these portions to concisely convey th...
 
Multi-Modal Perceptualization of Volumetric Data and Its Application to Molecular Docking
Found in: World Haptics Conference
By Ross Maciejewski, Seungmoon Choi, David S. Ebert, Hong Z. Tan
Issue Date:March 2005
pp. 511-514
In this paper, we present a multi-modal data perceptualization system used to analyze the benefits of augmenting a volume docking problem with other perceptual cues, particularly stereoscopic vision and haptic rendering. This work focuses on the problem of...
 
A Shape-Based Visual Interface for Text Retrieval
Found in: IEEE Computer Graphics and Applications
By Randall M. Rohrer, John L. Sibert, David S. Ebert
Issue Date:September 1999
pp. 40-46
Visual data mining requires a tightly coupled visual interface with underlying information retrieval and analysis engines. To be useful, these techniques must augment human exploration and discovery beyond existing methods. Since the focus of data mining i...
 
Two-Handed Volumetric Document Corpus Management
Found in: IEEE Computer Graphics and Applications
By David S. Ebert, Amen Zwa, Ethan L. Miller, Christopher D. Shaw, D. Aaron Roberts
Issue Date:July 1997
pp. 60-62
This article describes a minimally immersive three-dimensional volumetric interactive information visualization system for management and analysis of document corpora. Two-handed interaction using three-space magnetic trackers and stereoscopic viewing are ...
 
Grouping Volume Renderers for Enhanced Visualization in Computational Fluid Dynamics
Found in: IEEE Transactions on Visualization and Computer Graphics
By Roni Yagel, David S. Ebert, James N. Scott, Yair Kurzion
Issue Date:June 1995
pp. 117-132
<p><it>Abstract</it>—This paper advocates the use of a group of renderers rather than any specific rendering method. We describe a bundle containing four alternative approaches to visualizing volume data. One new approach uses realistic v...
 
Data Aggregation and Analysis for Cancer Statistics - A Visual Analytics Approach
Found in: Hawaii International Conference on System Sciences
By Ross Maciejewski, Travis Drake, Stephen Rudolph, Abish Malik, David S. Ebert
Issue Date:January 2010
pp. 1-5
The disparity between data collected in rural and urban counties is often detrimental in the appropriate analysis of cancer care statistics. Low counts drastically affect the incidence and mortality rates of the data, leading to skewed statistics. In order...
   
Describing Temporal Correlation Spatially in a Visual Analytics Environment
Found in: Hawaii International Conference on System Sciences
By Abish Malik, Ross Maciejewski, Erin Hodgess, David S. Ebert
Issue Date:January 2011
pp. 1-8
In generating and exploring hypotheses, analysts often want to know about the relationship between data values across time and space. Often, the analysis begins at a world level view in which the overall temporal trend of the data is analyzed and linear co...
   
SemanticPrism: A multi-aspect view of large high-dimensional data: VAST 2012 Mini Challenge 1 award: Outstanding integrated analysis and visualization
Found in: 2012 IEEE Conference on Visual Analytics Science and Technology (VAST)
By Victor Yingjie Chen,Ahmad M Razip,Sungahn Ko,Cheryl Zhenyu Qian,David S. Ebert
Issue Date:October 2012
pp. 259-260
We present a visual analytics system SemanticPrism, which aims to analyze large-scale high-dimensional datasets containing logs of a million computers. SemanticPrism visualizes the data from three different perspectives: geo-temporal, time series curve, an...
 
Development of a mobile user interface for image-based dietary assessment
Found in: Proceedings of the 9th International Conference on Mobile and Ubiquitous Multimedia (MUM '10)
By Carol J. Boushey, David S. Ebert, Edward J. Delp, Marc Bosch, Ross Maciejewski, SungYe Kim, TusaRebecca Schap
Issue Date:December 2010
pp. 1-7
In this paper, we present a mobile user interface for image-based dietary assessment. The mobile user interface provides a front end to a client-server image recognition and portion estimation software. In the client-server configuration, the user interact...
     
Evaluating the effectiveness of visualization techniques for schematic diagrams in maintenance tasks
Found in: Proceedings of the 7th Symposium on Applied Perception in Graphics and Visualization (APGV '10)
By David S. Ebert, Insoo Woo, Krystal Thomas, Ross Maciejewski, Sungye Kim, Timothy D. Ropp
Issue Date:July 2010
pp. 33-40
In order to perform daily maintenance and repair tasks in complex electrical and mechanical systems, technicians commonly utilize a large number of diagrams and documents detailing system properties in both electronic and print formats. In electronic docum...
     
Volume composition and evaluation using eye-tracking data
Found in: ACM Transactions on Applied Perception (TAP)
By Aidong Lu, David S. Ebert, Ross Maciejewski
Issue Date:January 2010
pp. 1-20
This article presents a method for automating rendering parameter selection to simplify tedious user interaction and improve the usability of visualization systems. Our approach acquires the important/interesting regions of a dataset through simple user in...
     
Stippling by example
Found in: Proceedings of the 7th International Symposium on Non-Photorealistic Animation and Rendering (NPAR '09)
By David S. Ebert, Mario Costa Sousa, Ross Maciejewski, Sung Ye Kim, Tobias Isenberg, Wei Chen, William M. Andrews
Issue Date:August 2009
pp. 85-91
In this work, we focus on stippling as an artistic style and discuss our technique for capturing and reproducing stipple features unique to an individual artist. We employ a texture synthesis algorithm based on the gray-level co-occurrence matrix (GLCM) of...
     
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