Thomas A. DeFanti

Thomas A. DeFanti (Tom DeFanti) is an American computer graphics and virtual reality researcher who co-founded the Electronic Visualization Laboratory (EVL) at the University of Illinois Chicago (UIC) with Daniel J. Sandin in 1973 and co-invented the CAVE, the projection-based, walk-in VR theater that EVL introduced at SIGGRAPH 1992. In 1976 he, Sandin and Richard Sayre also developed the Sayre Glove, which EVL describes as the first wired data glove.

After retiring from UIC in 2004, DeFanti joined the University of California San Diego, where he is a research scientist at the Qualcomm Institute, the UC San Diego division of the California Institute for Telecommunications and Information Technology (Calit2). There he and artist Greg Dawe built the StarCAVE, NexCAVE, WAVE and SunCAVE VR systems. UIC lists him as a distinguished professor emeritus of computer science. He shared the 2007 IEEE VGTC Virtual Reality Technical Achievement Award with Carolina Cruz-Neira and Sandin for the CAVE, and was named to the inaugural class of the IEEE VGTC Virtual Reality Academy in 2022.

Reviewed 4 October 2026. Career, CAVE, Sayre Glove, awards and paper citations checked against EVL, Qualcomm Institute, UIC, SIGGRAPH, IEEE VGTC and UC San Diego sources and Crossref. About review dates.

Education

DeFanti earned a PhD in computer science from Ohio State University in 1973. As a graduate student there he developed GRASS (Graphics Symbiosis System), a computer graphics language written for Ohio State art professor Charles Csuri. According to EVL's 50th anniversary history, GRASS had already shown itself to be an interactive, real-time system that non-technical people could use. Ohio State gave him its Distinguished Alumni Award in 2018.

Career

Electronic Visualization Laboratory

UIC's Chemistry department hired DeFanti in 1973 to develop computer-generated instructional material, and he later joined the Information Engineering department, which became Computer Science. Just before arriving in Chicago he met Daniel Sandin, an artist and physicist on the faculty of UIC's School of Art & Design. The two founded the lab in September 1973 as the Circle Graphics Habitat; it was soon renamed the Electronic Visualization Laboratory. It began as a joint program of the College of Engineering and the School of Art & Design, and EVL calls it the first Science + Art program in the United States, leading to an MFA in electronic visualization or an MS or PhD in computer science. DeFanti described the lab's digital side in a 1976 paper, "The digital component of the circle graphics habitat". The Qualcomm Institute says the lab supported 44 graduate students and 10 staff and faculty members by the 1990s.

EVL's retrospective gives the founders' approach as building visualization hardware and software for "non-computer people, whether artists or astrophysicists", and favoring systems that were easy to learn, low-cost, interactive and real time. Early work connected the Chemistry department's PDP-11 and Vector General display running GRASS to the Sandin Image Processor, so that imagery could be manipulated with knobs and sliders and colorized live for video. GRASS and the Image Processor were used in live Electronic Visualization Events in 1975, 1976 and 1979, and Spiral PTL (1980), a recorded performance by Sandin, DeFanti and Mimi Shevitz, entered the inaugural video art collection of New York's Museum of Modern Art in 1983.

In 1976 artist Larry Cuba used EVL's GRASS system to create the computer animation for the briefing room scene in the 1977 film Star Wars. From 1977 DeFanti consulted for Dave Nutting Associates/Midway, the video game division of Bally, on what became the Z-GRASS language. Z-GRASS shipped with the Datamax UV-1, an early personal computer that output 320 by 204 color graphics to NTSC video; it was marketed for cable television titling but was mostly bought by artists at UIC and the School of the Art Institute of Chicago.

Sayre Glove

The Sayre Glove was a hand-worn controller built by Sandin and DeFanti from an idea by Richard Sayre. It used flexible tubes as angle sensors on the finger joints, each with a light source at one end and a photocell at the other; bending a finger changed the amount of light reaching the photocell, giving a measure of finger flexion. EVL describes it as a lightweight, inexpensive device for multidimensional control, used mainly to manipulate sliders in the GRASS system, and credits it as the first wired data glove. The EVL history notes that the tubes were not fiber optics. EVL's photo captions date the glove's development to 1976, while its project description says it was created in 1977; DeFanti and Sandin's final project report to the National Endowment for the Arts, which funded the work, is dated 10 November 1977. The report argued that digital computer art lacked "fluidity in control" and described the project as an attempt to build "dynamic, flexible, user-programmable input devices".

SIGGRAPH and scientific visualization

DeFanti and Sandin showed films and videos informally at the first SIGGRAPH conference in 1974. By 1977 DeFanti had a budget for the conference's Film and Video Show, which became an official event, and he went on to start the SIGGRAPH Video Review, a video publication of computer graphics work. The Qualcomm Institute says he edited it with UIC's Dana Plepys from 1979 to 2012. He co-chaired the SIGGRAPH 1979 conference with Bruce McCormick, served as secretary of ACM SIGGRAPH, and chaired the organization from 1981 to 1985.

In 1986 the National Science Foundation invited him to its Panel on Graphics, Image Processing and Workstations. The panel's recommendations led to the 1987 report Visualization in Scientific Computing, which DeFanti co-edited with McCormick and Maxine Brown. Also in 1986 he became the first visiting computer science researcher at the National Center for Supercomputing Applications (NCSA), working with its director Larry Smarr, and in the 1990s he was NCSA's associate director for visualization and virtual reality.

The CAVE

The Qualcomm Institute says DeFanti and Sandin conceived the CAVE virtual reality theater in 1991. The first published description, by Cruz-Neira, Sandin, DeFanti, Robert V. Kenyon and John C. Hart, appeared in Communications of the ACM in June 1992, and the design paper by Cruz-Neira, Sandin and DeFanti was presented at SIGGRAPH 1993. A 2008 UC San Diego release credits DeFanti with leading the team that "built and named" the CAVE at UIC in 1991, and a 2019 UC San Diego story says he coined the term.

The CAVE premiered at SIGGRAPH 1992 in Chicago within Showcase, a demonstration of networked visualization research that DeFanti was responsible for, organized with Argonne National Laboratory, NCSA and other partners. The 1992 system was a 10-foot cube with three rear-projected walls and a down-projected floor that held about 10 people. Viewers wore active stereo glasses, and a navigator wore a six-degrees-of-freedom tracker so that the perspective on every surface followed that person's head. From 1984 EVL worked with Chicago's (art)n Laboratory on computer-generated barrier-strip autostereograms, and EVL's history says the off-axis, viewer-centered perspective that Sandin and DeFanti explored in that work was the primary contribution to the later CAVEs. NCSA and Argonne built their own CAVEs by 1993, and Pyramid Systems, later acquired by Fakespace and then Mechdyne Corporation, licensed the design for commercial sale.

Later EVL projects and networking

DeFanti co-authored papers on EVL's follow-on displays, including a 1997 paper on the single-screen ImmersaDesk and the Infinity Wall and a 2005 paper on Varrier, a barrier-strip autostereoscopic VR display. His networking work grew out of the goal of linking CAVEs for remote, shared sessions. He was information architect for the Supercomputing '95 conference, served as one of several US technical advisors to a G7 broadband interoperability effort in 1996, sat on the founding board of Internet2 from 1997 to 2001, and co-founded the StarLight research and education exchange in Chicago with Joe Mambretti and Maxine Brown. EVL's history lists the I-WAY event at Supercomputing 1995, organized by Argonne, NCSA and EVL, and the NSF-funded OptIPuter project (2002-2009), led by Smarr with Calit2 and EVL, among this work.

Calit2 and the Qualcomm Institute

DeFanti retired from UIC in 2004 and became a research scientist at Calit2 at UC San Diego, while continuing to work with EVL. At Calit2 he worked on the StarCAVE, unveiled in 2007 and designed by a team that included DeFanti, Greg Dawe, Ramesh Rao, Larry Smarr and Jurgen Schulze. UC San Diego described it in 2008 as a five-sided room with 15 rear-projected screens and two floor screens, 34 high-definition projectors and more than 68 million pixels, built for less than $1 million. DeFanti was lead author of the 2009 paper on the system, which called it a "third-generation CAVE".

A 2011 paper led by DeFanti, "The future of the CAVE", argued that rear-projected CAVEs, which typically need a room about 10 m on each side, would give way to tiled flat-panel displays, and described early panel-based VR displays that UC San Diego and UIC researchers had built for King Abdullah University of Science and Technology. Calit2's later systems used flat panels: WAVE is a curved array of 35 LCD monitors, and the SunCAVE replaced the StarCAVE in the summer of 2017 with high-resolution LCD screens. The SunCAVE has 70 screens driven by 35 computer nodes and was built with National Science Foundation funds. "It's a beautiful object, a giant gem," DeFanti told UC San Diego in 2019, adding that its 35 PCs and 70 game-class GPUs made it "a computer cluster that also happens to immerse you in realistic 3D pictures".

In 2009 DeFanti, Sandin and Richard Ainsworth developed CAVEcam, an automated spherical stereo photography system that captured 360 by 180 degree panoramas from 72 pictures per eye, each 10 megapixels, stitched into stereo images of about 500 megapixels per eye. EVL says the SunCAVE was built partly to display CAVEcam images, which older CAVEs lacked the resolution to show. In 2016 he was part of a team building "CAVEkiosks" for University of California libraries, intended to let visitors explore archaeological sites such as Petra together in VR, and he was then a co-principal investigator of the Pacific Research Platform network.

As of October 2026 the Qualcomm Institute lists DeFanti as a research scientist. His profile says he is co-leading construction of the Alternate Reality Network Observatory, which it calls a metaverse experiment for managing the institute's global-scale Nautilus supercomputer, and that he is a principal or co-principal investigator on National Research Platform and CHASE-CI awards.

Awards and honors

Year	Honor	Notes
1988	ACM Outstanding Contribution Award
1994	ACM Fellow
2000	ACM SIGGRAPH Outstanding Service Award	Copper Giloth also received the award that year
2007	IEEE VGTC Virtual Reality Technical Achievement Award	With Carolina Cruz-Neira and Daniel Sandin, for the CAVE
2018	Ohio State University Distinguished Alumni Award
2022	IEEE VGTC Virtual Reality Academy	Inaugural class

Selected VR publications

Year	Title	Venue
1977	Sayre Glove Final Project Report (with D. Sandin)	National Endowment for the Arts report R60-34-163
1992	The CAVE: Audio Visual Experience Automatic Virtual Environment	Communications of the ACM
1993	Surround-Screen Projection-Based Virtual Reality: The Design and Implementation of the CAVE	SIGGRAPH '93
1997	The ImmersaDesk and Infinity Wall projection-based virtual reality displays	ACM SIGGRAPH Computer Graphics
2005	The Varrier autostereoscopic virtual reality display	ACM Transactions on Graphics (SIGGRAPH 2005)
2009	The StarCAVE, a third-generation CAVE and virtual reality OptIPortal	Future Generation Computer Systems
2011	The future of the CAVE	Central European Journal of Engineering
2024	Electronic Visualization Laboratory's 50th Anniversary Retrospective	PRESENCE: Virtual and Augmented Reality

See also

• CAVE
• Daniel J. Sandin
• Carolina Cruz-Neira
• Data glove