"Talent does what it can; genius does what it must."

Greg Humphreys
Assistant Professor of Computer Science

Department of Computer Science
School of Engineering and Applied Science
University of Virginia
151 Engineer's Way, P.O. Box 400740
Charlottesville, Virginia 22904-4740

Phone: (434) 982-2220
Fax: (434) 982-2214
Email: humper@cs.virginia.edu
Office: 216 Olsson Hall, UVa

Home page of Greg Humphreys

Areas of Interest

Computer graphics, scalable rendering with commodity components, and real time rendering techniques

Biographical Sketch

reg Humpreys received his Ph.D. in Computer Science from Stanford University in 2002. He joined the University of Virginia in 2002 as an Assistant Professor of Computer Science. His textbook on physically based rendering and its associated software are currently used in courses around the world, and also support multiple active research projects in rendering. He co-founded the company Ahpah Software Inc., which focuses on reverse engineering technology for the Java Virtual Machine. He co-authored about twenty refereed conference and journal articles.

Research

umphrey's primary research interests lie in algorithms and systems for managing complexity in computer graphics. His Chromium system for manipulating streams of graphics API commands runs on clusters of commodity workstations. Chromium's highly-scalable general stream processing capability can support any cluster-parallel rendering algorithm, and this system became the basis of several commercial tools. Greg also investigated multidimensional adaptive sampling, ultra-fast blue noise generation, multigrid GPU numerical techniques, gaming player behavior analysis, non-invasive 3D architechtural exploded view generation, scalable robust visualization of large trees, interactive time-dependent GPU-based tone mapping, secure interactive rendering, and hardware/software symbiosis.

Selected Publications

Visualizing Competitive Behaviors in Multi-User Virtual Environments, N. Hoobler, G. Humphreys, and M. Agrawala, IEEE Visualization, 2004, pp 163-170.

Non-Invasive Interactive Visualization of Dynamic Architectural Environments, C. Niederauer, M. Houston, M. Agrawala, and G. Humphreys, Proceedings of ACM Symposium on Interactive 3D Graphics, 2003, pp. 55-58.

A Multigrid Solver for Boundary Value Problems Using Programmable Graphics Hardware Goodnight, N., Woolley, J., Lewin, G., Luebke, D., and Humphreys, G., Proceedings of Graphics Hardware 2003, pp. 102-111.

Interactive Time-Dependent Tone Mapping Using Programmable Graphics Hardware, N. Goodnight, R. Wang, J. Woolley, and G. Humphreys, Proceedings of Eurographics Symposium on Rendering 2003, pp. 1-13.

A Distributed Graphics System for Large Tiled Displays, G. Humphreys, and P. Hanrahan, Proceedings of IEEE Visualization 1999, pp. 215-224.

[Home Page] [Vitae] [Computer Graphics Group] [Chromium] [Tortola Project] [Ahpah]