Computer Arts Society February Meeting: Alan Sutcliffe, London, 19 February 2008

Non-members are welcome to attend so please pass this notice on to anyone who may be interested. Like most CAS meetings there is no charge for admission.

The CAS is pleased to announce it’s first meeting of the New Year which will be given by the CAS founder and editor of PAGE:

Alan Sutcliffe – Recent Graphics and Animations using some Maths

Tuesday, 19 February 2008 (note 3rd Tuesday)
7:00; System Simulation Ltd, Bedford Chambers, The Piazza Covent Garden, London WC2E 8HA, England

A simple method to generate irregular but smooth curves will be described, together with shading to give 3-d forms. The method uses the repeated addition of differences of differences of differences in one co-ordinate for unit change in the other co-ordinate. Drawing in the XOR mode gives unexpected benefits in this context. The anatomy of the XOR operator applied to grey-scales and colours will be illustrated. This is an extended version of the talk given at the Bridges Conference at Donostia in July 2007, updated with some more recent animations based on these and other mathematical methods.

In 1967 Alan Sutcliffe wrote a program, to compose electronic music, which ran on an ICL 1900 computer. The music was realised, from a paper tape of the score, in the electronic music studio of Peter Zinovieff. When this won second prize in the International
Computer Music Competition at IFIP 68 in Edinburgh he was prompted to propose the formation of a Computer Arts Society that he chaired until 1979. During 2007 he has exhibited in Bremen, Graz, Donostia and Karlsruhe. An early graphic, thought lost, turned up in the CAS Collection during its hand-over to the Victoria & Albert Museum. Alan now edits PAGE – the bulletin of the CAS.

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