Fast Ray Traversal of Tetrahedral and Hexahedral Meshes for Direct Volume Rendering Abstract (2009)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Gerd Marmitt
The importance of high-performance rendering of unstructured or curvilinear data sets has increased significantly, mainly due to its use in scientific simulations such as computational fluid dynamics...
A Case Study: Visualizing Material Point Method Data (2009)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, James Bigler, James Guilkey, Christiaan Gribble, ...
The Material Point Method is used for complex simulation of solid materials represented using many individual particles. Visualizing such data using existing polygonal or volumetric methods does not...
Visualizing the Phonon Map (2009)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, E. Deines, F. Michel, M. Bertram, ...
In this work we present several visualization approaches for analyzing acoustic behavior inside a room. Our methods are based on the results of the phonon tracing algorithm. For a simulated phonon...
Three-Dimensional Visualization Techniques for Crystallographic Information (2009)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Andrew Kaufman, Pin Ren, Bruce Gooch, ...
Northwestern University, Evanston
Evaluating the Effectiveness of Tree Visualization Systems for Knowledge Discovery (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Yue Wang, Soon Tee Teoh, Kwan-liu Ma
User studies, evaluations, and comparisons of tree visualization systems have so far focused on questions that can readily be answered by simple, automated queries without needing visualization....
Structure-accentuating Dense Flow Visualization (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Sung W. Park, Hongfeng Yu, Ingrid Hotz, ...
Vector field visualization approaches can broadly be categorized into approaches that directly visualize local or integrated flow and approaches that analyze the topological structure and visualize...
GPU-Accelerated Volume Splatting With Elliptical RBFs (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Neophytos Neophytou, Klaus Mueller, Kevin T. Mcdonnell, ...
The α-histogram: Using Spatial Coherence to Enhance Histograms and Transfer Function Design (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Claes Lundström, Anders Ynnerman, Patric Ljung, ...
The high complexity of Transfer Function (TF) design is a major obstacle to widespread routine use of Direct Volume Rendering, particularly in the case of medical imaging. Both manual and automatic...
GPUFLIC: Interactive and Accurate Dense Visualization of Unsteady Flows (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Guo-shi Li, Xavier Tricoche, Charles Hansen
The paper presents an efficient and accurate implementation of Unsteady Flow LIC (UFLIC) on the Graphics Processing Unit (GPU). We obtain the same, high quality texture representation of unsteady...
Structure-accentuating Dense Flow Visualization (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Sung W. Park, Hongfeng Yu, Ingrid Hotz, ...
Vector field visualization approaches can broadly be categorized into approaches that directly visualize local or integrated flow and approaches that analyze the topological structure and visualize...
Thomas Ertl, Ken Joy, Beatriz Santos (editors, S. Seipel, A-k. Forsberg, D. Wesslén
In this paper, we describe an improved method for visualization of thermographic data in the paper and pulp process industry. We present an application that allows process operators to freely choose...
GPU-Accelerated Volume Splatting With Elliptical RBFs (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Neophytos Neophytou, Klaus Mueller, Kevin T. Mcdonnell, ...
Radial Basis Functions (RBFs) have become a popular rendering primitive, both in surface and in volume rendering. This paper focuses on volume visualization, giving rise to 3D kernels. RBFs are...
SciDAC Visualization and Analytics Center for Enabling Technologies (2008)
Bethel, E. Wes, Johnson, Chris, Joy, Ken, Ahern, Sean, Pascucci, Valerio, Childs, Hank, ...
The Visualization and Analytics Center for Enabling Technologies (VACET) focuses on leveraging scientific visualization and analytics software technology as an enabling technology for increasing...
Bethel, E. Wes, Johnson, Chris, Aragon, Cecilia, Prabhat, ???, Rubel, Oliver, Weber, Gunther, ...
The focus of this article is on how one group of researchers the DOE SciDAC Visualization and Analytics Center for Enabling Technologies (VACET) is tackling the daunting task of enabling knowledge...
VACET: Proposed SciDAC2 Visualization and Analytics Center for Enabling Technologies (2008)
Bethel, W., Johnson, Chris, Hansen, Charles, Parker, Steve, Sanderson, Allen, Silva, Claudio, ...
This paper accompanies a poster that is being presented at the SciDAC 2006 meeting in Denver, CO. This project focuses on leveraging scientific visualization and analytics software technology as an...
Thomas Ertl, Ken Joy, Beatriz Santos (editors, O. Rübel, G. H. Weber, ...
To allow a more rigorous understanding of animal gene regulatory networks, the Berkeley Drosophila Transcription Network Project (BDTNP) has developed a suite of methods that support quantitative,...
Abstract Multiresolution Interblock Interpolation in Direct Volume Rendering (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Patric Ljung, Claes Lundström, Anders Ynnerman, ...
We present a direct interblock interpolation technique that enables direct volume rendering of blocked, multiresolution volumes. The proposed method smoothly interpolates between blocks of arbitrary...
Path Line Oriented Topology for Periodic 2D Time-Dependent Vector Fields (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, K. Shi, H. Theisel, T. Weinkauf, ...
This paper presents an approach to extracting a path line oriented topological segmentation for periodic 2D timedependent vector fields. Topological methods aiming in capturing the asymptotic...
2007 Visualization and Analytics Center for Enabling Technologies (VACET) www.vacet.org (2008)
E. Wes Bethel, Chris Johnson, Ken Joy, Sean Ahern, Valerio Pascucci, Jonathan Cohen, ...
Abstract. The Visualization and Analytics Center for Enabling Technologies (VACET) focuses on leveraging scientific visualization and analytics software technology as an enabling technology for...
GPUFLIC: Interactive and Accurate Dense Visualization of Unsteady Flows (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Guo-shi Li, Xavier Tricoche, Charles Hansen
The paper presents an efficient and accurate implementation of Unsteady Flow LIC (UFLIC) on the Graphics Processing Unit (GPU). We obtain the same, high quality texture representation of unsteady...
Thomas Ertl, Ken Joy, Beatriz Santos (editors, K. J. Kruszyński, R. Van Liere, J. A. Ka
Determining the shape of coral structures is an essential step for coral biologists to classify and compare corals. Currently, coral biologists analyze shape by performing manual measurements on...
Abstract Knowledge-Based Out-of-Core Algorithms for Data Management in Visualization (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, David Chisnall, Min Chen, Charles Hansen
Data management is the very first issue in handling very large datasets. Many existing out-of-core algorithms used in visualization are closely coupled with application-specific logic. This paper...
2007 Visualization and Analytics Center for Enabling Technologies (VACET) www.vacet.org (2008)
Ctwatch Quarterly, E. Wes Bethel, Chris Johnson, Cecilia Aragon, Oliver Rübel, Gunther Weber, ...
improvements to early telescope designs that resulted in the first practically usable instrument for observing the heavens. With his “invention, ” Galileo went on to many notable astronomical...
Improving the Quality of Multi-resolution Volume Rendering (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, H. Younesy, T. Möller, H. Carr
We propose a novel method to improve the quality of multi-resolution visualizations. We reduce aliasing artifacts by approximating the data distribution with a Gaussian basis function at each level...
Integrating Dynamic Deformations into Interactive Volume (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Tom Brunet, K. Evan, Nowak Michael Gleicher
Non-linear geometric deformation (or warping) is a useful tool for working with volumes. Unfortunately, the computational expense of performing the resampling needed to implement volume deformation...
CVSgrab: Mining the History of Large Software Projects (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, S. L. Voinea, A. Telea
Many software projects use Software Configuration Management systems to support their development process. Such systems accumulate in time large amounts of information useful for process accounting...
Combining Extended Table Lens and Treemap Techniques for Visualizing Tabular Data (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Alexandru Telea
We present a framework for visualizing large tabular data that combines two views: the table view and the treemap view. The table view extends the known table lens as follows: We cluster related...
Evaluating the Effectiveness of Tree Visualization Systems for Knowledge Discovery (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Yue Wang, Soon Tee Teoh, Kwan-liu Ma
User studies, evaluations, and comparisons of tree visualization systems have so far focused on questions that can readily be answered by simple, automated queries without needing visualization....
Karim Abdel-malek, Jingzhou Yang, Denis Blackmore, Ken Joy
A survey of swept volume concepts and methods is presented. It consolidates and relates seemingly different terminology and methods. The methods are divided into five major categories: method with...
Hardware-accelerated Extraction and Rendering of Point Set Surfaces (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, E. Tejada, J. P. Gois, L. G. Nonato, ...
Point-based models are gaining lately considerable attention as an alternative to traditional surface meshes. In this context, Point Set Surfaces (PSS) were proposed as a modeling and rendering...
Volume Composition Using Eye Tracking Data (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Aidong Lu, Ross Maciejewski, David S. Ebert
This paper presents a method to automate rendering parameter selection, simplifying tedious user interaction and improving the usability of visualization systems. Our approach acquires...
A Granular Three Dimensional Multiresolution Transform (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Alireza Entezari, Tai Meng, Steven Bergner, ...
We propose a three dimensional multi-resolution scheme to represent volumetric data in resolutions which are powers of two, resolving the rigidity of the commonly used separable Cartesian...
Visualizing the Phonon Map (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, E. Deines, F. Michel, M. Bertram, ...
In this work we present several visualization approaches for analyzing acoustic behavior inside a room. Our methods are based on the results of the phonon tracing algorithm. For a simulated phonon...
A Case Study: Visualizing Material Point Method Data (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, James Bigler, James Guilkey, Christiaan Gribble, ...
The Material Point Method is used for complex simulation of solid materials represented using many individual particles. Visualizing such data using existing polygonal or volumetric methods does not...
Application-Oriented Extensions of Profile Flags (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Matej Mlejnek, Pierre Ermes, Anna Vilanova, ...
This paper discusses two applications of probing dense volumetric data for MR orthopedics and dynamic contrast enhanced MRI mammography. In order not to reduce the context information and to extract...
Structure-accentuating Dense Flow Visualization (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Sung W. Park, Hongfeng Yu, Ingrid Hotz, ...
Vector field visualization approaches can broadly be categorized into approaches that directly visualize local or integrated flow and approaches that analyze the topological structure and visualize...
Direct Isosurface Extraction from Scattered Volume Data Abstract (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Paul Rosenthal, Lars Linsen
Isosurface extraction is a standard visualization method for scalar volume data and has been subject to research for decades. Nevertheless, to our knowledge, no isosurface extraction method exists...
Robust Surface Detection for Variance Comparison and Dimensional Measurement (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, C. Heinzl, R. Klingesberger, J. Kastner, ...
Figure 1: Homogeneous industrial work piece segmentation based on 3D watershed and constrained elastic-surface nets This paper describes a robust method for creating surface models from volume...
GPU-Based Hyperstreamlines for Diffusion Tensor Imaging (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, G. Reina, K. Bidmon, F. Enders, ...
We propose a new approach for the visualization of hyperstreamlines, which offers potential for better scalability than the conventional polygon-based approach. Our method circumvents the bandwidth...
Segmentation of Flow Fields using Pattern Matching Abstract (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, J. Ebling, G. Scheuermann
Due to the amount of data nowadays, automatic detection, classification and visualization of features is necessary for a thorough inspection of flow data sets. Pattern matching using vector valued...
Abstract Data Reconstruction and Visualization Techniques for Forensic Pathology (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Er Ehlert, Zein Salah, Dirk Bartz
Forensic pathology is largely concerned with the determination of the cause and manner of deaths after accidents, or other circumstances in criminal investigations. A major task in that process is...
Affiliation Dynamics with an Application to Movie-Actor Biographies (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Ulrik Br, Martin Hoefer, Christian Pich
We propose a visualization approach for dynamic affiliation networks in which events are characterized by a set of descriptors. It uses a radial ripple metaphor to display the passing of time and...
Thomas Ertl, Ken Joy, Beatriz Santos (editors, K. J. Kruszyński, R. Van Liere, J. A. Ka
Determining the shape of coral structures is an essential step for coral biologists to classify and compare corals. Currently, coral biologists analyze shape by performing manual measurements on...
GPU-Accelerated Volume Splatting With Elliptical RBFs (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Neophytos Neophytou, Klaus Mueller, Kevin T. Mcdonnell, ...
Radial Basis Functions (RBFs) have become a popular rendering primitive, both in surface and in volume rendering. This paper focuses on volume visualization, giving rise to 3D kernels. RBFs are...
Efficient Surface Reconstruction from Noisy Data using Regularized Membrane Potentials (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, A. C. Jalba
We present a novel, physically-motivated method for surface reconstruction that can recover smooth surfaces from noisy and sparse data sets, without using orientation information. A new volumetric...
Lossless Geometry Compression for Steady-State and Time-Varying Irregular Grids † (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Dan Chen, Yi-jen Chiang, Nasir Memon, ...
In this paper we investigate the problem of lossless geometry compression of irregular-grid volume data represented as a tetrahedral mesh. We propose a novel lossless compression technique that...
Eurographics / IEEE-VGTC Symposium on Visualization (2006) (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors
Many have tried to define or explain what properties make for an effective visualization [Sea95][Shn96][Tuf90]. Elements such as aspect ratio, density, color usage, and typeface variation have been...
Thomas Ertl, Ken Joy, Beatriz Santos (editors, K. J. Kruszyński, R. Van Liere, J. A. Ka
Determining the shape of coral structures is an essential step for coral biologists to classify and compare corals. Currently, coral biologists analyze shape by performing manual measurements on...
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Robert S. Laramee, Christoph Garth, Jürgen Schneider, ...
Stream surfaces are a classic flow visualization technique used to portray the characteristics of vector fields, and texture advection research has made rapid advances in recent years. We present a...
A Spectral Visualization System for Analyzing Financial Time Series Data (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Daniel A. Keim, Tilo Nietzschmann, Norman Schelwies, ...
Visual data analysis of time related data sets has attracted much research interest recently, and a number of sophisticated visualization methods have been proposed in the past. In financial...
Real-Time Super Resolution Contextual Close-up of Clinical Volumetric Data (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, T. Taerum, M. C. Sousa, F. Samavati, ...
We present an illustrative visualization system for real-time and high quality rendering of clinical volumetric medical data. Our technique is inspired by a medical illustration technique for...
Enhancing Slice-based Visualizations of Medical Volume Data (2008)
Thomas Ertl, Ken Joy, Beatriz Santos (editors, Christian Tietjen, Björn Meyer, Stefan Schlechtweg, ...
Slice-based visualizations of CT and MRI data are frequently used for diagnosis, intervention planning and intraoperative navigation since they allow a precise analysis and localization. We present...
Eurographics/ IEEE-VGTC Symposium on Visualization (2006) (2008)
Thomas Ertl Ken, Ken Joy, Beatriz Santos (editors, Malte Clasen, Hans-christian Hege
We describe a terrain rendering algorithm for spherical terrains based on clipmaps. It leverages the high geometry throughput of current GPU to render large static triangle sets. The vertices are...
On the Role of Domain-specific Knowledge in the Visualization of Technical Flows. (2008)
Garth, Christoph, Tricoche, Xavier, Wiebel, Alexander, Joy, Ken
Lagrangian Visualization of Flow-Embedded Surface Structures. (2008)
Garth, Christoph, Wiebel, Alexander, Tricoche, Xavier, Joy, Ken, Scheuermann, Gerik
SciDAC Visualization and Analytics Center for Enabling Technology (2006)
Bethel, E. Wes, Johnson, Chris, Joy, Ken, Ahern, Sean, Pascucci, Valerio, Childs, Hank, ...
The SciDAC2 Visualization and Analytics Center for Enabling Technologies (VACET) began operation on 10/1/2006. This document, dated 11/27/2006, is the first version of the VACET project management...
Thomas Ertl, Ken Joy, Beatriz Santos (editors, S. Oeltze, A. Ku, F. Grothues, ...
We present static and dynamic techniques to visualize perfusion data and to relate perfusion data to morphologic image data. In particular, we describe the integrated analysis of MRI myocardial...
Bethel, Wes, Frank, Randy, Fulcomer, Sam, Hansen, Chuck, Joy, Ken, Kohl, Jim, ...
This article describes the role of scientific visualization in computational and experimental sciences with emphasis upon future research challenges.
Bethel, E. Wes, Frank, Randall, Fulcomer, Samuel, Hansen, Chuck, Joy, Ken, Kohl, Jim, ...
This document is the report from the Visualization breakout session at the SCaLeS (Science Case for Large-scale Simulation) workshop held in 2003 in Bethesda, MD. The document presents current...