IEEE Computer Graphics and Applications

Issue 4 • July 1993

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Displaying Results 1 - 9 of 9
  • Visualization blackboard-visualizing bioelectric fields

    Publication Year: 1993, Page(s):10 - 12
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (334 KB)

    A toolkit developed to visualize cardiac electrophysiology is discussed. The geometric models that play a crucial role in the analysis, manipulation, and visualization of cardiac bioelectric data and the two separate data visualization systems developed for quick, flexible viewing of spatially distributed data and for displaying selected frames of data or preparing presentation-quality images are ... View full abstract»

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  • Visualizing second-order tensor fields with hyperstreamlines

    Publication Year: 1993, Page(s):25 - 33
    Cited by:  Papers (92)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5574 KB)

    A method developed to help scientists visualize 3D tensor data is presented. The method is based on the concept of a hyperstreamline, the simplest continuous tensor structure that can be extracted from a tensor field. Hyperstreamlines for a particular case of symmetric tensor fields are introduced, and a structural depiction of symmetric tensor fields is derived from the representation of many hyp... View full abstract»

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  • Visualization for climate modeling

    Publication Year: 1993, Page(s):34 - 40
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (649 KB)

    Techniques for visualizing several climate variables, particularly clouds and wind velocities, are discussed. The techniques are volume rendering, textured contour surfaces, and vector field rendering. The application of these techniques is discussed in the context of a high-definition television (HDTV) animation produced to show global cloud motion during ten simulated days in January. The comput... View full abstract»

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  • Flow visualization with surface particles

    Publication Year: 1993, Page(s):18 - 24
    Cited by:  Papers (35)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (594 KB)

    A technique for rendering particles in general, and surface particles in particular, is presented. This technique incorporates an improved shading model, the use of Gaussian filters to prevent spatial and temporal artifacts, and an efficient scan-conversion algorithm. The steps of the rendering are described: shading, filtering, scan conversion, and occlusion. Ways in which the process may be vari... View full abstract»

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  • AutoVisual: rule-based design of interactive multivariate visualizations

    Publication Year: 1993, Page(s):41 - 49
    Cited by:  Papers (33)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    An extension to the n-Vision visualization system, which provides users with a 3D virtual world within which they can visualize and manipulate representations of multivariate relations is discussed. The extension, AutoVisual, is rule based system that eliminates the difficulty in choosing among the many alternative when designing visualizations. AutoVisual designs interactive virtual worlds for vi... View full abstract»

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  • Volume data and wavelet transforms

    Publication Year: 1993, Page(s):50 - 56
    Cited by:  Papers (91)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (527 KB)

    The application of 3D orthogonal wavelet transforms to real volume data is discussed. Examples of the wavelet transform and the reconstruction of 1D functions are presented. The application of the 3D wavelet transform to real volume data generated from a series of 115 slices of magnetic resonance (MR) images is described.<> View full abstract»

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  • Direct volume display devices

    Publication Year: 1993, Page(s):57 - 65
    Cited by:  Papers (17)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (742 KB)

    Direct volume display devices (DVDDs), which display 3D volumes and surfaces in a volume by providing depth rather than depth cues, are discussed. The transport theory model is used to illustrate why DVDDs are best able to support fast presentation from arbitrary directions. The technology underlying various DVDDs is described. Specifically, the design and operation of the OmniView rotating-screen... View full abstract»

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  • Automated product concept design: unifying aesthetics and engineering

    Publication Year: 1993, Page(s):66 - 75
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (757 KB)

    An experimental computer-aided design tool that actively assists in conceptual industrial design of consumer electronics products with injection-molded housings is discussed. This concept phase design tool uses manufacturing, ergonomic, aesthetic, and styling considerations to improve the entire product development process. The model's organization level performs spatial partitioning of components... View full abstract»

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  • What's that deal with the DCT?

    Publication Year: 1993, Page(s):78 - 83
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (437 KB)

    Discrete cosine transforms (DCTs) and discrete Fourier transforms (DFTs) are reviewed in order to determine why DCTs are more popular for image compression than the easier-to-compute DFTs. DCT-based image compression takes advantage of the fact that most images do not have much energy in the high-frequency coefficients. It is suggested that DCTs are more popular because fewer DCT coefficients than... 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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Editor-in-Chief
L. Miguel Encarnação
The QED Group