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IEEE Computer Graphics and Applications

Issue 3 • May 1991

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Displaying Results 1 - 8 of 8
  • An interpersonal multimedia visualization system

    Publication Year: 1991, Page(s):20 - 27
    Cited by:  Papers (1)  |  Patents (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    Media View, a system that can be used to produce an electronic document containing mathematics, data sets, and associated visualizations, is discussed. Animations and other substructures persist through electronic mailing and can be awakened by the recipient. The features of Media View documents are described. Analysis and visualization with Media View are examined, including linking to Mathematic... View full abstract»

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  • Visualizing multivariate functions, data, and distributions

    Publication Year: 1991, Page(s):28 - 35
    Cited by:  Papers (20)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    The problem of visualizing a scalar-dependent variable that is a function of many independent variables is addressed, focusing on cases with three or more independent variables. A hierarchical axis using different metrics for each independent variable is used, as are hierarchical data symbols. The technique is described for the case in which each independent variable is sampled in a regular grid o... View full abstract»

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  • Visualizing vector field topology in fluid flows

    Publication Year: 1991, Page(s):36 - 46
    Cited by:  Papers (194)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (717 KB)

    Methods for automating the analysis and display of vector field topology in general, and flow topology in particular, are described. By using techniques to extract and visualize topological information, it is possible to combine the simplicity of schematic depictions with the quantitative accuracy of curves and surfaces computed directly from the data. Two-dimensional vector field topology is disc... View full abstract»

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  • Visualizing and modeling scattered multivariate data

    Publication Year: 1991, Page(s):47 - 55
    Cited by:  Papers (42)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6173 KB)

    Visualizing two types of scattered data-volumetric data sampled in a three-dimensional volume and surface-on-surface data sampled on a three-dimensional surface-is addressed. Since measurements are often sampled at discrete scattered locations, mathematical models that are defined over the entire domain and that interpolate or approximate the given scattered data are used. The modeling function ca... View full abstract»

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  • A methodology for choosing data representations

    Publication Year: 1991, Page(s):56 - 67
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1144 KB)

    The process of matching the type of information of interest with the ability of the different representation properties to convey this information is formalized in a generic framework. Visualization approaches are discussed, and the natural scene paradigm on which the methodology for choosing a representation is based is described. Data types and interpretation aims are explored. The use of the pa... View full abstract»

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  • Efficient bounds in constructive solid geometry

    Publication Year: 1991, Page(s):68 - 74
    Cited by:  Papers (17)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (567 KB)

    Testing for intersection between geometric entities in ray casting is normally performed by intersecting a ray (a semi-infinite line) against the surface elements of a geometric model. Simple reasoning about the extent of each geometric entity significantly reduces the time required by such algorithms. If the ray and the geometric entities are boxed, one first tests to see whether the box around t... View full abstract»

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  • Window clipping methods in graphics accelerators

    Publication Year: 1991, Page(s):75 - 84
    Cited by:  Papers (1)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (618 KB)

    How some recently introduced graphics accelerators address window clipping is discussed. Some graphics accelerators can download the window-clip rectangle data structures used to represent the visible areas of a window to specialized RAM or hardware registers. These accelerators have special hardware and/or software to hold the clipping information and to properly clip graphics primitives. Others ... View full abstract»

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  • Jim Blinn's Corner-WYSBOAVRTWYG

    Publication Year: 1991, Page(s):85 - 92
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (652 KB)

    It is noted that when one previews pictures on a screen before printing them, what is seen usually bears only a vague resemblance to what is produced. In this context, four output devices which are often called in at successive stages of refinement of an image are discussed: (1) cathode-ray tube; (2) laser printer; (3) Linotronic typesetter output on special high-contrast slick paper, (sometimes t... View full abstract»

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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