IEEE Computer Graphics and Applications

Issue 3 • May 1996

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Displaying Results 1 - 13 of 13
  • Making Connections

    Publication Year: 1996
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (302 KB)

    First Page of the Article
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  • RF visualization to support airborne collection management

    Publication Year: 1996, Page(s):11 - 13
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (362 KB)

    Visualization of radio frequency (RF) has myriad commercial and military applications, including airborne collection management (CM). In airborne collection, an aircraft is equipped with a receiver that detects radio signals in the high frequency (HF, 3 to 30 MHz), very high frequency (VHF, 30 to 300 MHz), and ultra high frequency (UHF, 300 MHz to 3 GHz) bands of the spectrum. The aircraft must na... View full abstract»

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  • Re-creating a lost village in 3D space [virtual reality]

    Publication Year: 1996, Page(s):15 - 16
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    Robert Benfer, an anthropologist at the University of Missouri, is using 3D virtual reality software to take his students two places: Peru and the pre Columbian past. Benfer is using 3D authoring software developed by MultiGen Inc. of San Jose, California, to reconstruct the ancient fishing village of Paloma, Peru, which he first visited in 1976 and has since made part of his life's work. It is pe... View full abstract»

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  • Superfaces: polygonal mesh simplification with bounded error

    Publication Year: 1996, Page(s):64 - 77
    Cited by:  Papers (98)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1892 KB)

    The algorithm presented simplifies polyhedral meshes within prespecified tolerances based on a bounded approximation criterion. The vertices in the simplified mesh are a proper subset of the original vertices. The algorithm, called Superfaces, makes two major contributions to the research in this area: it uses a bounded approximation approach, which guarantees that a simplified mesh approximates t... View full abstract»

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  • WWW extends “Apprentice's Assistant” to global medical resource

    Publication Year: 1996, Page(s):14 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    An effort to produce a multimedia textbook on diffuse lung disease grew wings the day the authors saw Mosaic run for the first time. Since that day in late 1992, the CD ROM project planned by Jeffrey Galvin, an associate professor and director of chest imaging at the University of Iowa Hospital's radiology department in Iowa City, has grown into the University of Iowa's Virtual Hospital, a World W... View full abstract»

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  • Texram: a smart memory for texturing

    Publication Year: 1996, Page(s):32 - 41
    Cited by:  Papers (28)  |  Patents (56)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB)

    Logic embedded memory is an emerging technology that combines high transfer rates and computing power. Texram implements this technology and a new filtering algorithm to achieve high speed, high quality texture mapping. Integrating arithmetic units and large memory arrays on the same chip and thus exploiting the enormous internal transfer rates provides an elegant solution to the memory access bot... View full abstract»

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  • Antialiasing by Gaussian integration

    Publication Year: 1996, Page(s):58 - 63
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    The antialiasing method presented is based on Gaussian integration rather than Fourier spectrum analysis; it views aliasing as a general integral approximating a sampled function instead of a signal reconstruction problem. In this way, we can use classical numerical analysis to study the problem View full abstract»

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  • Distributed virtual environments

    Publication Year: 1996, Page(s):19 - 31
    Cited by:  Papers (48)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1268 KB)

    Putting the reality into virtual environments requires much more than outstanding 3D computer graphics and effective human computer interaction. To be “real”, elements of the virtual environment must not only look realistic and provide natural interaction, they must move correctly, behave believably, and approximate the complexity of the real world. Individual computer systems cannot p... View full abstract»

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  • Frieze groups

    Publication Year: 1996, Page(s):78 - 83
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    The study of frieze patterns is traditionally associated with group theory, a branch of abstract mathematics. In fact, frieze and wallpaper patterns appear almost universally in books on group theory because they are perfect illustrations of those ideas. Because the pattern is algorithmic, one can synthesize it and generate texture (such as when scan converting) or analyze it to find the texture c... View full abstract»

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  • Distributed computing: new power for scientific visualization

    Publication Year: 1996, Page(s):42 - 51
    Cited by:  Papers (7)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1236 KB)

    Distributed computing provides unique benefits for scientific visualization in this system (Discover) that supports interactive visualization and cooperative work for nonprogrammers. Discover (Distributed Interactive Scientific Computing and Visualization Environment), is suitable for many areas, but we have concentrated on medical image analysis and generation-one of the the most rapidly growing ... View full abstract»

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  • Calculating screen coverage

    Publication Year: 1996, Page(s):84 - 88
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    When drawing a 3D object it is sometimes useful to find a rectangle on the screen that completely encloses the object. This can be used to minimize screen-update and z-buffer-clear regions. If the entire object is visible within the screen boundaries, this calculation is easy, you just find the minimum and maximum x and y screen coordinates. If the object extends outside the screen boundaries in o... View full abstract»

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  • Using hypermedia in computer-aided instruction

    Publication Year: 1996, Page(s):52 - 57
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    The previous article in this issue (see ibid., 1996) described the Discover distributed interactive visualization system, which has been running at National Cheng-Kung University Hospital since 1993. Shortly after Discover was implemented, we observed that physicians were having trouble understanding and navigating through Discover processes for image analysis and generation. To address this probl... View full abstract»

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  • VRMosaic: Web access from within a virtual environment

    Publication Year: 1996, Page(s):6 - 10
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    For the foreseeable future, users of virtual reality systems will likely spend more time in the “real” environment than in a virtual environment. In the “real” environment, users access much of their data using flat screen applications, which include tools such as authoring and analysis programs and even hyperlinked browsers. We believe that users will find VEs more appeali... 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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L. Miguel Encarnação
The QED Group