Designed especially for neurobiologists, FluoRender is an interactive tool for multi-channel fluorescence microscopy data visualization and analysis.
Deep brain stimulation
BrainStimulator is a set of networks that are used in SCIRun to perform simulations of brain stimulation such as transcranial direct current stimulation (tDCS) and magnetic transcranial stimulation (TMS).
Developing software tools for science has always been a central vision of the SCI Institute.


Visualization, sometimes referred to as visual data analysis, uses the graphical representation of data as a means of gaining understanding and insight into the data. Visualization research at SCI has focused on applications spanning computational fluid dynamics, medical imaging and analysis, biomedical data analysis, healthcare data analysis, weather data analysis, poetry, network and graph analysis, financial data analysis, etc.

Research involves novel algorithm and technique development to building tools and systems that assist in the comprehension of massive amounts of (scientific) data. We also research the process of creating successful visualizations.

We strongly believe in the role of interactivity in visual data analysis. Therefore, much of our research is concerned with creating visualizations that are intuitive to interact with and also render at interactive rates.

Visualization at SCI includes the academic subfields of Scientific Visualization, Information Visualization and Visual Analytics.


Charles Hansen

Volume Rendering
Ray Tracing

Valerio Pascucci

Topological Methods
Data Streaming
Big Data

Chris Johnson

Scalar, Vector, and
Tensor Field Visualization,
Uncertainty Visualization

Mike Kirby

Uncertainty Visualization

Ross Whitaker

Topological Methods
Uncertainty Visualization
alex lex

Alex Lex

Information Visualization

Bei Wang

Information Visualization
Scientific Visualization
Topological Data Analysis

Centers and Labs:

Funded Research Projects:

Publications in Visualization:

A New Stochastic Approach to Transient Heat Conduction Modeling with Uncertainty
D. Xiu, G.E. Karniadakis. In International Journal of Heat and Mass Transfer, Vol. 46, No. 24, pp. 4681--4693. 2003.
DOI: 10.1016/S0017-9310(03)00299-0

We present a generalized polynomial chaos algorithm for the solution of transient heat conduction subject to uncertain inputs, i.e. random heat conductivity and capacity. The stochastic input and solution are represented spectrally by the orthogonal polynomial functionals from the Askey scheme, as a generalization of the original polynomial chaos idea of Wiener [Am. J. Math. 60 (1938) 897]. A Galerkin projection in random space is applied to derive the equations in the weak form. The resulting set of deterministic equations is subsequently discretized by the spectral/hp element method in physical space and integrated in time. Numerical examples are given and the convergence of the chaos expansion is demonstrated for a model problem.

Keywords: Uncertainty, Stochastic modeling, Polynomial chaos, Transient heat conduction, Random medium

Display of Vector Fields Using a Reaction-Diffusion Model
SCI Institute Technical Report, A.R. Sanderson, C.R. Johnson. No. UUSCI-2003-002, University of Utah, June, 2003.

A Constraint-Based Technique for Haptic Volume Exploration
M. Ikits, J.D. Brederson, C.D. Hansen, C.R. Johnson. In Proceedings IEEE Visualization 2003, Seattle, WA, pp. 263--269. October, 2003.

Graphics Applications for Grid Computing
C.D. Hansen, C.R. Johnson. In IEEE Comp. Graph. & Applic., pp. 20--21. March/April, 2003.

Workshop on Dynamic Data-Driven Application Systems
C.C. Douglas, M. Cole, Y. Efendiev, R. Ewing, V. Ginting, C.R. Johnson, G.M. Jones, R. Lazarov, C. Shannon, J. Simpson. In ICCS 2003, Melbourne, Australia, June 2-3, 2003.

Anisotropic diffusion of surface normals for feature preserving surface reconstruction
T. Tasdizen, R.T. Whitaker. In Proceedings of Fourth International Conferenceon 3-D Imaging and Modeling, pp. 353--360. October, 2003.

A Comprehensive Calibration and Registration Procedure for the Visual Haptic Workbench
M. Ikits, C.D. Hansen, C.R. Johnson. In Proceedings of the Ninth Eurographics Workshop on Virtual Environments, Zurich, Switzerland, pp. 247--254. May, 2003.

Cramer-Rao Bounds for Nonparametric Surface Reconstruction from Range Data
T. Tasdizen, R.T. Whitaker. In Proceedings of Fourth International Conference on 3-D Imaging and Modeling, pp. 70--77. October, 2003.

Particle-Based Simulation of Fluids
S. Premoze, T. Tasdizen, J. Bigler, A.E. Lefohn, R. T. Whitaker. In Eurographics, pp. 401--410. 2003.

Feature preserving variational smoothing of terrain data
T. Tasdizen, R.T. Whitaker. In IEEE Workshop on Variational, Geometric and Level Set Methods in Computer Vision, October, 2003.

Curvature-Based Transfer Functions for Direct Volume Rendering: Methods and Applications
G. Kindlmann, R.T. Whitaker, T. Tasdizen, T. Möller. In Proceedings Visualization 2003, pp. 67. October, 2003.

BioPSE Case Study: Modeling, Simulation, and Visualization of Three Dimensional Mouse Heart Propagation
D.M. Weinstein, J.V. Tranquillo, C.S. Henriquez, C.R. Johnson. In International Journal of Bioelectromagnetism, Vol. 5, No. 1, pp. 314--315. 2003.

Geometric Surface Processing via Normal Maps
T. Tasdizen, R.T. Whitaker, P. Burchard, S. Osher. In ACM Transactions on Graphics, 2003.

A Next Step: Visualizing Errors and Uncertainty
C.R. Johnson, A.R. Sanderson. In IEEE Computer Graphics and Applications, Vol. 23, No. 5, pp. 6--10. September/October, 2003.

A Note on Dynamic Data Driven Application Simulation (DDDAS) Using Virtual Telemetry
C.C. Douglas, C.E. Shannon, Y. Efendiev, R.E. Ewing, V. Ginting, R. Lazanov, M.J. Cole, G.M. Jones, C.R. Johnson, J. Simpson. In International Conference on Parallel Algorithms and Computing Environments, pp. pp.193--198. 2003.

Geometric Surface Smoothing via Anisotropic Diffusion of Normals
T. Tasdizen, R.T. Whitaker, P. Burchard, S. Osher. In Proceeding of IEEE Visualization 2002, pp. 125--132. 2002.

The transfer function bake-off
H. Pfister, B. Lorensen, C. Bajaj, G. Kindlmann, W. Schroeder, L.S. Avila, K.M. Raghu, R. Machiraju, J. Lee. In IEEE Computer Graphics and Applications, Vol. 21, No. 1, IEEE, pp. 16--22. 2001.
DOI: 10.1109/38.920623

Modeling and Simulation in Medicine: Towards an Integrated Framework
G. Higgins, B. Athey, J. Bassingthwaighte, J. Burgess, H. Champion, K. Cleary, P. Dev, J. Duncan, M. Hopmeier, D. Jenkins, C.R. Johnson, H. Kelly, R. Leitch, W. Lorensen, D. Metaxas, V. Spitzer, N. Vaidehi, K. Vosburgh, R. Winslow. In Computer Aided Surgery, Vol. 6, No. 1, Note: Final report of the meeting of the same title held July 20-21, 2000, National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA., 2001.
DOI: 10.1002/igs.1008

Computational Engineering and Science Program at the University of Utah
C. DeTar, A.L. Fogelson, C.R. Johnson, C.A. Sikorski. In Proceedings of the International Conference on Computational Science (ICCS) 2001, San Francisco, Edited by V. Alexandrov and J. Dongarra and B. Juliano and R. Renner and K. Tan, pp. 1176--1185. May, 2001.

A Prototype System For Synergistic Data Display
J.D. Brederson, M. Ikits, C.R. Johnson, C.D. Hansen. In IEEE Virtual Reality 2001, 2001.