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Now showing 1 - 10 of 155
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    GRAPHIC DISPLAYS IN THE COMPUTER AIDED DESIGN OF LIFT SYSTEMS
    (The Eurographics Association, 1982) Barney, G.C.; D.S. Greenaway and E.A. Warman
    The sizing of lift systems to meet passenger demands is normally carried out in a quantitative way by calculation. Nothing is done to determine the quality of service provided. This paper describes how a computer aided design suite using discrete simulation techniques coupled to extensive graphic displays overcomes these deficiencies.
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    TOWN PLANNING AIDED BY AN INTEGRATED MUNICIPAL LAND INFORMATION SYSTEM
    (The Eurographics Association, 1981) Eloranta, Kirsi; J. L. Encarnacao
    The purpose of this paper is to describe the results of our recent land information systems research in The Institute of Geodesy at Helsinki University of Technology. Our goal is to make research on municipal systems by building pilot systems and also by studying technical implementation problems on theoretic basis. In this paper one of our pilot systems is described, the one that is designed for town planning applications. Generally the research project could be characterized by the following keywords: use of minicomputers, problem oriented approach, evolutive approach in systems design, applications oriented data base management and integration of urban land information systems.
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    A FAST ALGORITHM FOR COLOUR REGION SEGMENTATION
    (The Eurographics Association, 1982) Stark, J.P.W.; Mahdavieh, Y.; Tjahjardi, T.; D.S. Greenaway and E.A. Warman
    An algorithm is described which analyses colour scenes in terms of regions. These regions are defined to have the same 'colour'. In this context the colour of a region is determined by its position in the CIE chromaticity diagram. The procedure outlined reduces the three-dimensional colour cube to a one-dimensional colour grey-scale. This approach significantly reduces the amount of data and also the amount of processing required in colour scene analysis.
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    SOME USEFUL BUT RATHER UNUSUAL GRAPHICAL PRIMITIVES
    (The Eurographics Association, 1981) Magnenat-Thalmann, Nadia; Thalmann, Daniel; Bergeron, Philippe; J. L. Encarnacao
    The MIRALIB library is a powerful graphical library which may be used with MIRA-2D, a graphical PASCAL extension as well as with the standard PASCAL language. MIRALIB includes figure algebra routines, figure measure functions, figure recognition predicates, image transformations as fitting or clearing and animation primitives. The most unusual primitives are presented with the help of a few examples.
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    ON CONSTRUCTING INTERACTIVE GRAPHICS SYSTEMS
    (The Eurographics Association, 1982) Hanusa, Henning; Kuhlmann, Herbert W.; Pfaff, Günther E.; D.S. Greenaway and E.A. Warman
    Abstract: A framework for generating a graphics dialogue system dedicated to special application, user, and graphics hardware characteristics is presented. A prerequisite is the design of common dialogue methods and the establishing of a dialogue library. Due to environment dependent parameters a prototype dialogue-subsystem is configured. The evaluation of data being monitored during interactive sessions leads to subsequent re-configuration steps.
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    An Approach for CAD-System Simulation
    (Blackwell Publishing Ltd and the Eurographics Association, 1982) EncarnacaTo, J.
    The paper describes an approach for the technical evaluation and economic justification of CAD systems based on a CAD system simulation. The underlying model, the tools needed and the simulation concept used are discussed in detail. An extensive bibliography complements the concepts presented in the paper.
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    ABSTRACT DATA TYPE BASED PROGRAMMING STYLE AND COMPUTER GRAPHICS
    (The Eurographics Association, 1981) Giloi, W. K.; J. L. Encarnacao
    The next generation of "intelligent" industrial robots will necessitate off-line programming systems in which generative graphics (picture generation) and cognitive graphics (picture understanding) is combined. This will require programming languages that comprise graphical data types. The classical implementation of a graphical programming system in the form of a procedure package deals with representations of graphical objects and thus does not provide graphical data types. However, modern abstract data type based languages allow graphical data types to be introduced as user-defined abstract data types. The features of such a language, CLU, is discussed, and the implementation of a graphical data type in CLU is illustrated by a simple example.
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    News
    (Blackwell Publishing Ltd and the Eurographics Association, 1982) ten Hagen, P.
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    A COMPUTER GRAPHICS PACKAGE FOR TEACHING CRYSTAL MORPHOLOGY
    (The Eurographics Association, 1982) Angell, Ian O.; Moore, Moreton; D.S. Greenaway and E.A. Warman
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    COMPUTER AIDED DESIGN LANGUAGE 'CADLAN'
    (The Eurographics Association, 1981) Bigelmaier, Anton; Brunner, Helmut; Strack, Helmut; J. L. Encarnacao