Issue 4
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Item EUROGRAPHICS Individual Membership Application(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item Offers to EUROGRAPHICS Members(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item Teaching Workshop - December 1985(Blackwell Publishing Ltd and the Eurographics Association, 1986) Duce, D.A.Item Proposed Revisions to the EUROGRAPHICS UK Chapter Constitution(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 A Survey of Contouring Methods(Blackwell Publishing Ltd and the Eurographics Association, 1986) Sabin, MalcolmItem CALL FOR PAPERS(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EUROGRAPHICS Institutional Membership Form(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 International Cooperation for Computer Graphics(Blackwell Publishing Ltd and the Eurographics Association, 1986) Sneddon, MarkItem 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 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 EUROGRAPHICS -87 Welcome to Amsterdam(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item The Association for Computing in Art and Design Education (ACADE)(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 Reconstruction of 3D Objects from Orthographic Projections(Blackwell Publishing Ltd and the Eurographics Association, 1986) Gu, Kaining; Tang, Zesheng; Sun, JiaguangAn algorithm for automatic reconstruction of 3D objects from their orthographic projections is presented in this paper. It makes some improvements to, and complements the, Wesley-Markowsky algorithm, which is a typical hierarchical reconstruction algorithm limited to polyhedral objects, and extracts the idea of pattern recognition expressed in the Aldefeld algorithm. It is shown in theory by analysis and in practice by implementation that the proposed algorithm successfully rejected pathological cases and found all solutions with the same set of orthographic views. Compared with the existing algorithms presented in references, this algorithm covers some more complex cases of objects incorporating cylinders.Item Institutional Membership Column(Blackwell Publishing Ltd and the Eurographics Association, 1986) Encarnacao, Prof J. L.Item EUROGRAPHICS General Assembly(Blackwell Publishing Ltd and the Eurographics Association, 1986)Item EDITORIAL(Blackwell Publishing Ltd and the Eurographics Association, 1986) Arnold, David; Enderle, GuenterItem UK Chapter of the EUROGRAPHICS Association CONSTITUTION(Blackwell Publishing Ltd and the Eurographics Association, 1986)