Chapter 5: University research labs evolve

5.4 Illinois-Chicago and University of Pennsylvania

University of Illinois – Chicago Circle

Dan Sandin

Dan Sandin came to the University of Illinois at Chicago Circle from the University of Wisconsin in 1971 and developed the Sandin Image Processor, which could be thought of as the visual counterpart to the MOOG synthesizer. He was joined the next year by Tom DeFanti, who had developed the Graphics Symbiosis System (GRASS) as part of his PhD work with Chuck Csuri at the CGRG at Ohio State. Together, they organized the Circle Graphics Habitat, which became an environment for experimental computer graphics, video production, and educational materials development. Later in 1987, they were joined by Maxine D. Brown as Associate Director.

Some of the most important early work at the Habitat revolved around the Z Box (Z-50 processor) project, which resulted in the development of ZGRASS, which was an early PC-based graphics system for the Bally computer (1981). In the words of Jane Veeder, it provided

“…real time animation and real time sound synthesis accessed by a custom language optimized for interactive artmaking, all wrapped up together like a hot little sports car.”

Tom DeFanti

The box had an NTSC video output port, which provided video recording and display capabilities for artists. DeFanti et al attempted to commercialize the product through their company, Real Time Design, Inc. Artist Larry Cuba produced an animated sequence for the movie Star Wars on the system at Chicago in 1977.

Later contributions were in mathematics visualization and virtual reality, including the CAVE environment and the Immersadesk. DeFanti also contributed immensely to the SIGGRAPH organization, as its President and with contributions to their annual conference. DeFanti and the group at Chicago began a project to archive all of the films and videos shown at the SIGGRAPH conference, resulting in the SIGGRAPH Video Review (SVR). The Circle Graphics Habitat later became the Electronic Visualization Lab (EVL).


Research work at EVL over the years has included[1]:

  • 1977: The Sayre Glove, the first dataglove.
  • 1981: The Z Box hardware and ZGRASS software (based on DeFanti’s prior GRASS programming language), an early graphics system for the Bally home computer. This system featured NTSC video output and was used by a number of computer graphics artists of the time.
  • 1988: Computer generated PHSColograms, an autostereoscopic 3D technique, with (art)n.
  • 1992: The CAVE Automatic Virtual Environment, a projection-based virtual reality system.
  • 1995: The I-WAY event at Supercomputing ’95, a prototype of grid computing.
  • 1997: The STAR TAP project, a linking up of several international high-performance networks. Followed by the StarLight optical networking facility.

Highlights of the electronic art work done at EVL include:

  • Electronic Visualization Events (EVE) in the mid 1970s – live, real-time performances featuring computer graphics, video processing, and music.
  • Early computer graphics art videos, created by combining DeFanti’s GRASS system on a PDP-11 and the Sandin Image Processor. The video Spiral PTL (1980) was included in the inaugural collection of video art at the Museum of Modern Art.
  • Computer artist Larry Cuba spent time at EVL, using the tools there for his films 3/78 and Calculated Movements, as well as a short special effects sequence for Star Wars.
  • In 1996, EVL installed the first publicly accessible CAVE at the Ars Electronica Center in Austria, and presented a number of virtual reality artworks.


University of Pennsylvania

Norman Badler received his PhD at the University of Toronto. He joined the faculty of the University of Pennsylvania in 1974, and started the Computer Graphics Research Laboratory in the Computer and Information Science Department (in 1994 the lab became the Center for Human Modeling and Simulation). Research focused on his research emphasis on human figure animation, including human figure modeling, manipulation, and animation control, embodied agents, intuitive user interfaces, and computational connections between language and action. An early contribution with Maxine Brown and Steve Smoliar was in the area of Laban Notation scripting for animation. The lab achieved international recognition for its research and specifically for the Jack software (later marketed as a commercial product by Engineering Animation, Inc.).

Scene from the Jack software display

Jack provided a 3-D interactive environment for controlling articulated figures. With his human-like ability to reach and grasp as well as detect and avoid “collisions” with objects in his virtual environment, Jack could be animated to perform a variety of tasks that engineers could observe and evaluate. Jack featured a detailed human model who behaved realistically in various virtual environments. Designers could test the reach, range of motion, and other features of any size human, as he or she would fit within a designed space. For example, engineers would use Jack to determine whether crucial instruments within an aircraft cockpit fall within comfortable reach of the pilot, thus saving time and expense in building prototypes.

L. Weber, S. Smoliar, and N. Badler. “An architecture for the simulation of human movement.” Proc. ACM National Conf., Washington, DC, Dec. 1978

C. Phillips and N. Badler. ” Jack: A toolkit for manipulating articulated figures.” ACM SIGGRAPH Symposium on User Interface Software, Banff, Canada, October 1988, pp. 221-229.

Simulating Humans: Computer Graphics Animation and Control, by Norman I. Badler, Cary B. Phillips, and Bonnie Lynn Webber, Oxford University Press, Jun 17, 1993 – 270 pages

Gallery 5.4 Circle Graphics Habitat

  1. From the EVL Wikipedia page at