C.E.B. Reas is an artist who lives and works in Los Angeles. He focuses on defining processes and translating them into images. He is an associate professor and chair of the department of Design | Media Arts at the University of California, Los Angeles.
With Ben Fry, Reas initiated Processing.org in 2001. Processing is an open source programming language and environment for creating images, animation, and interaction. In September 2006, they published Processing: A Programming Handbook for Visual Designers and Artists, a 736 page comprehensive introduction to programming within the context of visual media (MIT Press).