has been a professor of Graphic Data Processing at the University of Bremen
since 1972. His Ph.D. is in mathematics (Stuttgart).
He was a postdoctoral fellow at the University of Toronto (1968/69), and became an assistant professor in computer science at the University of British Columbia, Vancouver, in 1970. His research interests are in computer graphics, digital media, computer art, computers in education, computational semiotics, and theory of computing science.
He began working in computer graphics and art in 1963, and is recognized as a pioneer in computer art. He contributed to a large number of art exhibitions during the years 1966 through 1972. Among these were Cybernetic Serendipity, London 1968, Proposal for an Experimental Exhibition at Venice Biannual 1970, and Tendencies, Zagreb 1969-72.
In November, 2004, he had a retrospective exhibition at Kunsthalle Bremen and ZKM Karlruhe, with the early graphic works and new interactive installations.