Issue 4
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Item Artificial Intelligence in Three-Dimensional Computer Animation(Blackwell Publishing Ltd and the Eurographics Association, 1986) Thalmann, D.; Magnenat-Thalmann, N.Recent developments in hardware and software have led to the production of complex computer-generated images and films. Sophisticated algorithms like ray-tracing, fractals or particle systems allow the generation of very realistic natural scenes. However, the design of images and films is still a painful task for designers, because of the inadequacy of person-machine interfaces. A large number of parameters is necessary to build objects (curves, surfaces) to define their properties (orientation, size, colour, transparency, texture, reflectance), to specify the viewing angle, to control the lights and shadows, to define and synchronize motions.The technology of artificial intelligence and more specially knowledge engineering makes possible the development of intelligent human-machine interfaces for image synthesis and animation. Designers may communicate with design and animation systems using natural language. Basic geometric rules may be given to the computer, making it an expert in 3D geometric modeling. Languages based on the concept of frame simplify the intelligent description of complex objects. Expert systems allow the designer to specify the conditions of an image using goal-directed specifications for cameras and lights. Scripts and actors are particularly appropriate for the description of motions- the impact of these concepts on 3D computer animation is considerable. Finally, the complex problem of animation of articulated bodies may be solved using knowledge-based animation. Examples are presented using our new language EXPERTMIRA. This language is based on MIRA and PROLOG and incorporates concepts of artificial intelligence, image synthesis and animation.Item The Association for Computing in Art and Design Education (ACADE)(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item Ausgraph -86(Blackwell Publishing Ltd and the Eurographics Association, 1986) Hopgood, F.R.A.; Duce, D.A.Item Beyond Hershey: A Representation of Fonts for Computer Graphics(Blackwell Publishing Ltd and the Eurographics Association, 1986) Gossling, T.H.Hershey-s "Repertory of Occidental Fonts" is well known in the field of computer graphics, as a set of character-forms which is superior to the cruder representations used when space was at a premium. This paper gives a method of extending Hershey-s format to include true curves, thus giving near typographical quality.Item Biom orphs: Computer Displays of Biological Forms Generated from Mathematical Feedback Loops(Blackwell Publishing Ltd and the Eurographics Association, 1986) Pickover, C.A.A computer graphics algorithm is used to create complicated forms resembling invertebrate organisms. These natural morphologies are generated through the iteration of mathematical transformations. Several illustrations are chosen as examples of the diversity of biological structures which result from this technique.Item Calendar of Events 1987(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item CALL FOR PAPERS(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EDITORIAL(Blackwell Publishing Ltd and the Eurographics Association, 1986) Arnold, David; Enderle, GuenterItem Errata(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EUROGRAPHICS -86 - A Personal View(Blackwell Publishing Ltd and the Eurographics Association, 1986) Morrow, T. M.Item EUROGRAPHICS -87 Welcome to Amsterdam(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EUROGRAPHICS Association, Geneva BALANCE SHEET AS AT JUNE 30th, 1986(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EUROGRAPHICS General Assembly(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EUROGRAPHICS Individual Membership Application(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EUROGRAPHICS Institutional Membership Form(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EUROGRAPHICS UK Chapter - Auditors Report(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item A Functional Approach to Animation(Blackwell Publishing Ltd and the Eurographics Association, 1986) Arya, KaviWe investigate the benefits of using a functional language to reason about and to implement animation. Since animation concerns pictures changing over time, we consider the manipulation of movies or picture sequences. A compact set of primitive operations over movies is introduced and its use as the basis for an animation system is illustrated. The notion of the behaviour of an animated character is formalised and we show how simple behaviours may be combined to create more complex behaviours. We then show how higher-order functions allow us to construct a variety of useful tools which lead to a highly concise functional script.Item Institutional Membership Column(Blackwell Publishing Ltd and the Eurographics Association, 1986) Encarnacao, Prof J. L.Item International Cooperation for Computer Graphics(Blackwell Publishing Ltd and the Eurographics Association, 1986) Sneddon, MarkItem Offers to EUROGRAPHICS Members(Blackwell Publishing Ltd and the Eurographics Association, 1986)