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IEEE Computer Graphics and Applications

Issue 1 • Jan 1995

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Displaying Results 1 - 11 of 11
  • Elimination and resultants. 1. Elimination and bivariate resultants

    Publication Year: 1995, Page(s):69 - 77
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    We discuss the relevance of elimination theory and resultants in computing, especially in computer graphics and CAGD. We list resultant properties to enhance overall understanding of resultants. For bivariate resultants, we present two explicit expressions: the Sylvester and the Bezout determinants. The Sylvester matrix is easier to construct, but the symmetrical Bezout matrix is structurally rich... View full abstract»

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  • How to draw a sphere. 1

    Publication Year: 1995, Page(s):78 - 83
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    I have written a special-purpose program that is highly optimized for drawing spheres. This program involves quite a variety of interesting tricks, but when I started to write about them, I realized that lot of matrix mathematics background is necessary to understand the sphere-rendering algorithm. I consider the matrix mathematics necessary to manipulate (and ultimately render) second-order surfa... View full abstract»

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  • Keeping an electronic eye on the road

    Publication Year: 1995, Page(s):16 - 17
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    To accurately study traffic patterns and incidents, researchers need a data set that encompasses day and night lighting, various weather conditions, and different road configurations. Therefore, the VME-MS team needed an all-weather, self-illuminating, mobile sensor station. ERIM is combining three Perceptron 3D Lasar datacameras with ERIM custom software, which extracts vehicle positions and head... View full abstract»

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  • Concurrent engineering with delta files

    Publication Year: 1995, Page(s):62 - 68
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    We describe a test system in which we used a data management system and delta files to communicate engineering changes between two modeling systems: an ACIS-based solid modeling system running on a Sun Sparc workstation to create a part, and a CATIA system running on an IBM RS/6000 to design a fixture for it. The test system communicates the first version of the MBB part between the two engineers ... View full abstract»

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  • Simulating dust accumulation

    Publication Year: 1995, Page(s):18 - 22
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Dust accumulation is a common natural phenomenon. Modeling of dust accumulation, however, has not been well studied. We present a technique to model the amount of dust that settles on object surfaces based on the properties of surfaces and the geometry of objects. Since many researchers have studied the scattering of light by air-borne dust, we do not consider it here. We illustrate our techniques... View full abstract»

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  • SeaMaster: an ROV-manipulator system simulator

    Publication Year: 1995, Page(s):24 - 31
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    In the absence of fully autonomous robots, manipulators operated by a person at a distance are used to carry out tasks in remote and/or hostile environments. SeaMaster software upgrades the human-machine interface of telemanipulators by letting operators control the actual and simulated manipulators either separately or simultaneously. It includes a data-driven control mode. In contrast to direct ... View full abstract»

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  • Automating virtual reality

    Publication Year: 1995, Page(s):9 - 11
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    The author discusses some applications of virtual reality and the limitations of interactivity. He considers how automatic simulated behavior minus the application judgment of direct human participation is already evolving in computer animation. In traditional animation, the animator explicitly controls every action of the characters, provides every cause, and determines every effect. While we thi... View full abstract»

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  • Rendering algorithms for deterministic fractals

    Publication Year: 1995, Page(s):32 - 41
    Cited by:  Papers (23)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB)

    Heavy computation requirements have inhibited the application of fractal technology, but new algorithms for coding and displaying iterated function system fractals are achieving real-time performance in software. We discuss the standard rendering algorithms and introduce a variation that performs a minimal number of arithmetic operations when constructing an approximate fractal. In addition, we de... View full abstract»

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  • Reconstruction of human fossils

    Publication Year: 1995, Page(s):12 - 15
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    Paleoanthropologists rarely discover complete and undamaged vertebrate fossils. The original bones may have been torn apart by carnivores, and the fossils further broken down and scattered by geological processes and weathering. A thorough study of specimens generally requires reassembling the original fossil shape as accurately as possible from the broken pieces. Furthermore, since very few fossi... View full abstract»

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  • Nonmanifold topology based on coupling entities

    Publication Year: 1995, Page(s):42 - 50
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    A nonmanifold topology model can surmount the limitations of traditional solid models. We propose a data structure and two classes of operations, focusing on neighborhood relationships and boundary information. The domain of our study is cell decomposition in a 3D Euclidean space. The study concentrated on representing and manipulating ordering information with compact representation View full abstract»

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  • Pixel processing in a memory controller

    Publication Year: 1995, Page(s):51 - 61
    Cited by:  Papers (1)  |  Patents (56)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (860 KB)

    The SX-a programmable pixel processor implemented in a workstation memory controller chip-aims to perform as well as low-end 2D and 3D graphics processors and to surpass low-end imaging accelerators. The following features help accomplish this goal: large internal register set; vectorized RISC-like instruction set; fast access to both main and video memory; fast pixel operations; free operations; ... 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
The QED Group