IEEE Computer Graphics and Applications

Issue 6 • Nov.-Dec. 1997

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Displaying Results 1 - 14 of 14
  • VRAIS 97 Highlights the Maturing of a Discipline

    Publication Year: 1997, Page(s):21 - 22
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    Freely Available from IEEE
  • Inside Moire patterns

    Publication Year: 1997, Page(s):97 - 101
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1220 KB)

    Moire patterns are produced by the interaction of two overlaid patterns. With a little geometry, it is easy to understand where they come from and how to create and control them. To demonstrate Moire effects the author uses a very simple set of patterns: sheets of parallel lines, called gratings View full abstract»

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  • The curvature of characteristic curves on surfaces

    Publication Year: 1997, Page(s):88 - 96
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (968 KB)

    Analyzing and interrogating designed surfaces remains an important and widely researched issue in computer-aided geometric design (CAGD). Treating families of characteristic curves on the surface proves a popular method of doing this. We show how to compute the curvature and geodesic curvature of characteristic curves on surfaces, such as contour lines, lines of curvature, asymptotic lines, isopho... View full abstract»

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  • Seamless interaction in virtual reality

    Publication Year: 1997, Page(s):6 - 9
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    Jot is a novel research interface for virtual reality modeling. This system seamlessly integrates and applies a variety of virtual and physical tools, each customized for specific tasks. The Jot interface not only moves smoothly from one tool to another but also physically and cognitively matches individual tools to the tasks they perform. In particular, we exploit the notion that gestural interac... View full abstract»

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  • 3D line voxelization and connectivity control

    Publication Year: 1997, Page(s):80 - 87
    Cited by:  Papers (41)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    Voxelization algorithms that convert a 3D continuous line representation into a discrete line representation have a dual role in graphics. First, these algorithms synthesize voxel-based objects in volume graphics. The 3D line itself is a fundamental primitive, also used as a building block for voxelizing more complex objects. For example, sweeping a 3D voxelized line along a 3D voxelized circle ge... View full abstract»

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  • Visualizing the dynamical behavior of Wonderland

    Publication Year: 1997, Page(s):71 - 79
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    The article concentrates on the visualization of a four dimensional continuous dynamical system, the Wonderland model. This system poses some interesting analysis challenges. Its temporal evolution, for example, is characterized by slow-fast dynamics. This means that some of the system variables vary much faster than others. The velocity varies by two magnitudes and thus makes visualization diffic... View full abstract»

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  • Enhanced illustration using Magic Lens filters

    Publication Year: 1997, Page(s):62 - 70
    Cited by:  Papers (9)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    In computerized 2.5D illustration systems such as Adobe Illustrator or CorelDraw, users construct pictures by layering geometrical shapes and specifying graphical properties such as line width, fill color, and transparency. In these systems, the act of applying a graphical property is closely tied to the way the individual objects in the design are constructed. For example, filled regions must be ... View full abstract»

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  • Interpolation synthesis of articulated figure motion

    Publication Year: 1997, Page(s):39 - 45
    Cited by:  Papers (70)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Most conventional media depend on engaging and appealing characters. Empty spaces and buildings would not fare well as television or movie programming, yet virtual reality usually offers up such spaces. The problem lies in the difficulty of creating computer generated characters that display real time, engaging interaction and realistic motion. Articulated figure motion for real time computer grap... View full abstract»

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  • Vibratory tactile display of image-based textures

    Publication Year: 1997, Page(s):53 - 61
    Cited by:  Papers (51)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1148 KB)

    Virtual worlds must integrate tactile and force sensations to create a sense of presence. Our tactile display conveys the textural sensation of object surfaces to a user's fingertip. This vibratory tactile display contains a contact pin array that transmits vibrations to the human skin. This type of device has been investigated as a reading aid for the blind since the 1960s. A device called the Op... View full abstract»

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  • The Virtual Reality Gorilla Exhibit

    Publication Year: 1997, Page(s):30 - 38
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The Virtual Reality Gorilla Exhibit is an immersive virtual environment which lets students assume the persona of an adolescent gorilla, enter into one of the gorilla habitats at Zoo Atlanta in Atlanta, Georgia, and interact as part of a gorilla family unit. The exhibit combines a model of Zoo Atlanta's Gorilla Habitat 3-home of Willie B, a 439 pound male silverback gorilla and his family group-wi... View full abstract»

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  • Faster, better, cheaper-NASA visualizes the solar system

    Publication Year: 1997, Page(s):10 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    Pathfinder is the first of many planned “Discovery Program” missions by NASA. The Discovery program is based on the concept of using “industry spacecraft” comprised of near commodity components built from generic parts that cost orders of magnitude less than the custom built equipment of earlier phases of space exploration. Daniel Goldin, administrator of NASA, has given hi... View full abstract»

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  • Integrating vestibular displays for VE and airborne applications

    Publication Year: 1997, Page(s):46 - 52
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Designing effective human machine interfaces is one of the more challenging and exciting issues facing engineers today. Many virtual environment (VE) designers approach this problem by examining the way humans interact with their natural environment. In essence, they have attempted to mimic the various ways humans use their senses to gather information. This approach seeks to present task relevant... View full abstract»

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  • Worm plots

    Publication Year: 1997, Page(s):17 - 20
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    Scientists sometimes spend hours conducting experiments only to find that the resulting data proves difficult to analyze with traditional visualization techniques. A typical laboratory experiment, for example, will setup several systems in each of two or more groups-a control group and various treatment groups. The investigator will then measure various parameters for each system over time (someti... View full abstract»

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  • Using virtual environments to train firefighters

    Publication Year: 1997, Page(s):23 - 29
    Cited by:  Papers (31)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    Using virtual environments for training and mission rehearsal gives US Navy firefighters an edge in fighting real fires. A test run on the ex-USS Shadwell measured the improvement. The results suggest that virtual environments serve effectively for training and mission rehearsal for shipboard firefighting. VE training provides a flexible environment where a firefighter can not only learn an unfami... 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
The QED Group