Tom DeFanti is a computer graphics researcher and pioneer. His work has ranged from early computer animation, to scientific visualization, virtual reality, and grid computing. He is a distinguished professor of Computer Science at the University of Illinois at Chicago, and a research scientist at the California Institute for Telecommunications and Information Technology.
DeFanti did his PhD work in the early 1970s at Ohio State University, under Charles Csuri in the Computer Graphics Research Group. For his dissertation, he created the GRASS programming language, a three-dimensional, real-time animation system usable by computer novices.
In 1973, he joined the faculty of the University of Illinois at Chicago. With Dan Sandin, he founded the Circle Graphics Habitat, now known as the Electronic Visualization Laboratory (EVL). At UIC, DeFanti further developed the GRASS language, and later created an improved version, ZGRASS, implemented on the low-cost Datamax UV-1. The GRASS and ZGRASS languages have been used by a number of computer artists, including Larry Cuba, in his film 3/78 and the animated Death Star sequence for Star Wars. Later significant work done at EVL includes development of the graphics system for the Bally home computer, invention of the first data glove, co-editing the 1987 NSF-sponsored report Visualization in Scientific Computing that outlined the emerging discipline of scientific visualization, invention of PHSColograms, and invention of the CAVE Automatic Virtual Environment. DeFanti's current work includes heading the TransLight/StarLight international multi-gigabit networking project and co-directing the OptIPuter optical networking and visualization project.