List of Participants

Organizing Committee

Other Participants

Ernie Warman did not attend the Workshop.

A few words on each participant have been added:

Peter Bono

Peter Bono was working at the Naval Underwater Systems Center (NUSC), New London, Connecticut. He had been involved with a major procurement of graphics systems, including interactive ones, for the US Navy in the period 1974-75. He went on to chair the ANSI Computer Graphics Standards activities.

Herb Bown

Herb had been working on computer graphics systems in Canada since the late 1960s. In 1976 he was working at the Canadian Communications Research Centre in Ottawa. He was one of the team that developed the Picture Description Instruction (PDI) format to encode vector graphics information. Norpak developed an interactive color display terminal based on the alpha-numeric encoding of PDI around the time of Seillac I. He later became involved in many of the video-based precursors to the web in Canada sending text and colour graphics and images over the telephone system. He currently owns Stages and Stores Inc in Newfoundland.

Geoff Butlin

Geoff Butlin was a civil engineer who had gained his PhD at Cambridge in 1966. He was a strong advocate of Computer Aided Engineering in the UK running a large Department at Leicester University involved with interactive computer graphics. After his time at Cambridge he had spent time at MIT and SINTEF in Norway. He later went on to form FEGS Ltd that marketed CAD modelling and Data Exchange software.

Jean-Pierre Crestin

Jean-Pierre was a pioneer of CAD in France with an interest in graphics related to Numerical Control machines.

Robert Dunn

Bob Dunn was the Chairman of SIGGRAPH from 1973 to 1975 and Conference Chair for the first SIGGRAPH Conference in Boulder, Colorado in 1974. He worked at the US Army Electronics Command, Fort Monmouth, New Jersey.

Jim Foley

Jim Foley got his PhD at the University of Michigan in 1969 and then moved to the University of North Carolina. He had been active in the computer graphics area in the years leading up to the Workshop with a special interest in satellite graphics systems (a dedicated computer and display attached to a mainframe). He worked with Bert Herzog on the ConComp (Conversation with Computers) project. This consisted of a DEC 338 display attached to a PDP8 and connected to an IBM 360/67 running MTS. Later with Andy van Dam Jim wrote four major publications in the computer graphics area.

Bert Herzog

Bert was a computer graphics pioneer getting involved as early as 1963. He became Professor of Industrial Engineering at the University of Michigan in 1968 and moved to the University of Colorado in 1976. He introduced computer graphics courses at the University of Michigan where Jim Foley was one of his early students. His major interests were computer graphics and networking. In 1976, he chaired the SIGGRAPH Graphics Standards Planning Committee (GSPC). Richard Guedj had known Bert since 1967 when Bert gave him a copy of his computer graphics lecture notes. They were good friends and between them organised most of the plenary sessions at Seillac I.

Lars Kjelldahl

Lars had started working in computer graphics in 1970 using an IBM 2250 display. He rewrote the basic software to make it easier to use. He developed a drawing system for nomograms and the area of diagram drawing systems was the topic of his thesis. After Seillac, he was the Swedish member of the ISO activities with respect to graphics standards.

Barbara Liskov

Barbara's 1968 thesis at Stanford was a computer program to play chess end games. She then joined MIT. By 1976, she was famous for her work on abstract data types and specification techniques. She was invited to the workshop in the hope that her knowledge would help to formalise any methodology that came out of Seillac I. Barbara received the ACM Turing Award in 2008 for contributions to practical and theoretical foundations of programming language and system design, especially related to data abstraction, fault tolerance, and distributed computing.

George Nees

George had been interested in structures and methodology of computer graphics since the early 1970s. He worked for Siemens in Erlangen. In April 1976 just before the Workshop, he gave lectures at the ACM German Chapter on Toward a unified approach to the specification of computer graphics software.

Martin Newell

Martin worked with his brother Dick and Tom Sancha at the CAD Centre before emigrating to the USA. He created the Newell teapot while completing his doctorate at the University of Utah in 1975. He then moved to Xeox PARC working on a predecessor to PostScript.

William Newman

William took his degree at the Cambridge Engineering Department and gained his PhD from Imperial College in 1968 (A System for Interactive Graphical Programming). His Reaction Handler (1966-67) provided direct manipulation of graphics, and introduced light handles, a form of graphical potentiometer, that was probably the first widget. He worked in the area of computer graphics at the University of Utah before coming back to the UK to work with George Coulouris at QMC in the period 1971 to 1972. There he developed a single-user interactive operating system (called MIFS). At the time of the Workshop, William was working at Xeroc PARC (1973-1979). He contributed to the development of raster graphics techniques, page description languages, laser printing software, illustration tools, integrated office systems and user interface design methodology. His Markup (1975) system was the first drawing program for Xerox PARC's Alto. In 1973, he had published with Bob Sproull the book: Principles of Interactive Computer Graphics which became an immediate best seller.

William Newman is a Principal Scientist at the Cambridge laboratory of Xerox Research Centre Europe. He is also currently an Acting Director of the laboratory. He gained a PhD in Computer Science from Imperial College London in 1968. Between 1973 and 1979 he was a member of research staff at the Xerox Palo Alto Research Center, where he contributed to the development of raster graphics techniques, page description languages, laser printing software, illustration tools, integrated office systems and user interface design methodology. He joined XRCE (then Rank Xerox EuroPARC) in 1988. His current interests are in technologies for integrating paper and electronic documents, and in methods for designing systems so as to achieve performance improvements for the user. He is co-author, with Mik Lamming, of the recent textbook Interactive System Design; previously he co-authored a pioneering graphics text, Principles of Interactive Computer Graphics, with Robert Sproull. He was recently Papers Co-chair of the CHI 99 Conference, and is a member of the recently formed ACM SIGCHI Publications Board. Since 1980 he has been a Visiting Professor in the Computer Science Department, Queen Mary Westfield College, London.

Malcolm Sabin

Malcolm spent the late 1960s and early 1970's developing a CAD system called Numerical Master Geometry (NMG) at the British Aircraft Corporation. His work covered patch continuity conditions, parametric surface interrogation, non-rectangular patches, offset surfaces, B-spline interpolation over triangular lattices, the use of potential surfaces for numerical geometry, and convolution of regions. He moved to the CAD Centre in Cambridge in the early 1970s and worked on GINO-F. He was the 2010 Pierre Bezier Award Recipient and awarded the 2012 Institute of Mathematics Gold Medal.

Alan C. Shaw

Alan was from the University of Washington with probably a greater interest in operating systems than graphics

Andries van Dam

Andy had got interested in computer graphics while visiting the Cambridge CAD Centre, developers of GINO, in the 1960s. He started a strong group working in the computer graphics area at Brown University in 1965. He was one of the early developers of SIGGRAPH, the ACM Special Interest Group in Computer Graphics in 1967. In 1971 he had a sabbatical in the Netherlands where he was involved with the development of GPGS. Later, he wrote one of the major computer graphics books, Fundamentals of Interactive Computer Graphics with Jim Foley.

Jacques Sakarovitch

Jacques was a young researcher at CNRS with an interest in theoretical computer science. After Seillac, his area of research was automata theory, from deterministic pushdown automata to star height of regular languages, from combinatorics of words to non standard numeration systems.

Ketil Bo

Ketil was from RUNIT in Trondheim with an interest in CAD and computer graphics. Interests included feature extraction and knowledge management for process planning.

Jose Encarnacao

Jose was from Estoril in Portugal but started working on computer graphics at the University of Berlin in 1967. He moved to the Technical University in Darmstadt in 1975 and was the driving force behind the DIN standardisation activities in computer graphics. He was a founder member of Eurographics and its first Chairman.

Richard Guedj

Richard graduated from the Nationale Superieure de l'Aeronautique in 1958 and continued his studies at Stanford University. He spent his early career working at Bull before doing research in voice recognition at ETL in Tokyo. He joined the Central Research Lab of Thomson-CSF in 1971 as Head of their Human Machine Communication Laboratory. After the two Seillac Workshops, Richard worked at SiGRID on VLSI design before moving to the Institut National des Telecommunications, (INT) as Dean for Research in 1989.

Giulius Hermann

Giulius was a member of IFIP WG 5.2 that organised the Workshop. Other members were Jose Encarnacao, Richard Guedj, Ernie Warman, Ketil Bo and Malcolm Sabin.

Bob Hopgood

Bob started developing computer graphics systems as early as 1960 while at Harwell. From 1968 he developed two graphics systems, GROATS and SPROGS for generating computer graphics particularly computer animation using microfilm recorders while at the Atlas Computer Laboratory. He taught computer graphics at Brunel University and was involved in the organisation of the two international computer graphics conferences at Brunel, CG68 and CG70.

Alain Lemaire

Michel Lucas

Michel came to computer graphics from an interest in CAD while at IRIA in Grenoble. In 1979 he became a Professor at the University of Nantes and in 1987 moved to Ecole Centrale de Nantes to continue his research in geometric modelling and computer image synthesis of complex 3D scenes.

Thomas Sancha

Tom together with Dick and Martin Newell worked at the Cambridge CAD Centre early on (1972) developing solutions to the hidden surface problem.

Hugh Tucker

Hugh graduated from the University of British Columbia in 1971 and then moved to Copenhagen to work for InfoMenta. He acted as Technical Secretary for both Seillac Conferences. Later he organised the very successful Eurographics Conference in Copenhagen in 1984.