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Computer Graphics and Applications, IEEE

Issue 1 • Date Jan. 1989

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Displaying Results 1 - 8 of 8
  • US Air Force relies on computer graphics to evaluate combat aircraft performance

    Publication Year: 1989, Page(s):10 - 11
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (215 KB)

    The use of computer graphics analysis and other powerful tools to evaluate jet aircraft performance at the US Air Force Flight Test Center, Edwards Air Force Base in California, is described. As many as 14 test versions of the same aircraft model are instrumented with sophisticated sensors to allow flight-test data to be recorded on tape. The tape-recorded data points are used by flight-test engin... View full abstract»

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  • Simulation of cameras in robot applications

    Publication Year: 1989, Page(s):16 - 25
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1086 KB)

    A method for simulating a camera for use in robot applications is described. The approach shows the physical modelling, based on a geometric model, of the camera, the light sources and the objects within the scene. Many parameters of the physical model can be adjusted to obtain simulation results close to reality. An example shows the simulation of a CCD (charge-coupled device) camera and a scene ... View full abstract»

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  • Methods for detecting errors in numerically controlled machining of sculptured surfaces

    Publication Year: 1989, Page(s):26 - 39
    Cited by:  Papers (7)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1290 KB)

    The numerically controlled (NC) machining of sculptured surfaces is an error-prone process often requiring several attempts before an error-free NC program is produced. A technique designed to move the NC proof process into software is described. The system outputs a color-coded graphics display of the machined surface that shows out-of-tolerance areas. To gain efficiency, surface curvature and cu... View full abstract»

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  • CASDA: synthesized graphic design of real-time systems

    Publication Year: 1989, Page(s):40 - 46
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (550 KB)

    The possibilities of enhancing synthesized graphic design approaches so one can design progressively step by step: the initial state diagram, the dataflow analysis, then the task decomposition, the precise real-time control flow description, and finally the design of the dedicated operating system are discussed. The enhancements added are: the diagrams are simple but allow a precise definition of ... View full abstract»

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  • Shape averaging and its applications to industrial design

    Publication Year: 1989, Page(s):47 - 54
    Cited by:  Papers (20)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (734 KB)

    A computer-assisted technique called shape averaging is presented. Shape averaging produces an abstraction of the typical representation from a set of shapes. Since the averaging is assumed to preserve the characteristics of the original shapes, the result is useful in predicting trends in form or extracting stereotypes from a group of related shapes. The technique can be used to create new forms ... View full abstract»

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  • A solid modelling system for robot action planning

    Publication Year: 1989, Page(s):55 - 69
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1183 KB)

    The characteristics of several solid representation schemes are discussed with respect to their possible use in robot action planning systems. The World Modeler (WM), a solid modeler developed by combining the generalized cylinder approach with constructive solid geometry, is presented. An efficient algorithm for computing collision among convex polyhedrons, that utilizes the internal geometric da... View full abstract»

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  • Collision-free motion of an articulated kinematic chain in a dynamic environment

    Publication Year: 1989, Page(s):70 - 74
    Cited by:  Papers (5)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (419 KB)

    A method for the collision avoidance of an articulated kinematic chain in a dynamic environment is presented. The inverse kinematic solution is used to get the configuration of the chain for a given position of any part of the chain. The calculation of collision-free motion is based on the local information about the motion. Intermediate positions are used to get the new motion path of the chain. ... View full abstract»

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  • What we need around here is more aliasing (computer graphics)

    Publication Year: 1989, Page(s):75 - 79
    Cited by:  Papers (5)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (389 KB)

    A brief tutorial is given on what aliasing means. Plots of some relevant functions are shown. Some of the conventional wisdom about aliasing is described, and why that wisdom may not be so wise is explained. Aliasing is actually an image processing phenomenon involving the Fourier transform, convolution and the convolution theorem.<> View full abstract»

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Aims & Scope

IEEE CG&A bridges the theory and practice of computer graphics. From specific algorithms to full system implementations, CG&A offers a unique combination of peer-reviewed feature articles and informal departments, including product announcements.

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Meet Our Editors

Editor-in-Chief
L. Miguel Encarnação
University of Iowa