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Computer Graphics and Applications, IEEE

Issue 2 • Date March-April 1998

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Displaying Results 1 - 12 of 12
  • Projecting Large-scale Graphics [About the cover]

    Publication Year: 1998 , Page(s): 4 - 5
    Save to Project icon | Request Permissions | PDF file iconPDF (413 KB)  
    Freely Available from IEEE
  • Guest Editors' Introduction Rendering [Special issue introduction]

    Publication Year: 1998 , Page(s): 20 - 21
    Save to Project icon | Request Permissions | PDF file iconPDF (104 KB)  
    Freely Available from IEEE
  • Triangle rendering using adaptive subdivision

    Publication Year: 1998 , Page(s): 95 - 103
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (240 KB)  

    Based on the error analysis of line segment rendering, we propose a new approach to piecewise linear approximation that proves significantly more efficient than previous solutions and allows the maintenance of any degree of accuracy. The major idea uses triangle subdivision versus scanline subdivision, computing the number of subtriangles based on the ratio of homogeneous coordinates. We show that... View full abstract»

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  • Visualization of wildfire simulations

    Publication Year: 1998 , Page(s): 17 - 19
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (468 KB)  

    The paper considers how Los Alamos researchers are partnering with Los Angeles County Fire Department, United States Forest Service, and Kennedy Space Center personnel for wildfire simulation studies. Fire behavior is highly dependent upon winds, temperatures and moisture. It is crucial to predict these weather parameters over the small regions where they directly affect a fire. Weather conditions... View full abstract»

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  • The Truga001: a scalable rendering processor

    Publication Year: 1998 , Page(s): 59 - 79
    Cited by:  Papers (7)  |  Patents (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (684 KB)  

    To support the increasing interest in virtual reality systems, computer graphics must now be extremely powerful to obtain realistic images. VR systems are based on two technical tools: graphics accelerators and pixel renderers. The paper discusses the Truga001 single-chip rendering processor for virtual reality and multimedia systems. It embeds 12 graphics processors and 7 special modules in a sin... View full abstract»

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  • Circular reasoning

    Publication Year: 1998 , Page(s): 104 - 108
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (248 KB)  

    The author discusses two interesting relationships between circles and lines. There should be a computer graphics application that can use the first topic to run faster or better. The second topic is Ptolemy's Theorem, which is a generalization of the triangle inequality. The author shows how it can be used to derive the angle addition formulas. He considers how Ptolemy's Theorem can be used to pr... View full abstract»

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  • The irradiance volume

    Publication Year: 1998 , Page(s): 32 - 43
    Cited by:  Papers (28)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1120 KB)  

    A major goal in computer graphics is realistic image synthesis. To this end, illumination methods have evolved from simple local shading models to physically based global illumination algorithms. Local illumination methods consider only the light energy transfer between an emitter and a surface (direct lighting), while global methods account for light energy interactions between all surfaces in an... View full abstract»

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  • Composite lighting simulations with lighting networks

    Publication Year: 1998 , Page(s): 22 - 31
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (760 KB)  

    Lighting networks combine different global illumination algorithms in a composite lighting simulation and allow for restricting costly lighting effects to important parts of the scene. In the lighting networks approach, each lighting algorithm is considered a lighting operator or LightOp. Each LightOp takes illumination information as input and generates new illumination information as output afte... View full abstract»

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  • Developments in standards for networked virtual reality

    Publication Year: 1998 , Page(s): 6 - 9
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (288 KB)  

    Standards used in virtual reality applications have evolved from a completely custom proprietary system developed for and used by a single government agency to an open technology taking advantage of the latest developments. Today these standards are used by hundreds, if not thousands, of organizations in industries ranging from military to entertainment to transportation. We review the history of ... View full abstract»

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  • Feature recognition from CAD models

    Publication Year: 1998 , Page(s): 80 - 94
    Cited by:  Papers (17)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (284 KB)  

    This article presents a system dubbed IF2 (Integrated Incremental Feature Finder), which functions as a feature recognizer or a feature model converter depending on whether the input CAD data contains design features. IF2 recognizes three types of machining features: holes, slots and pockets. This article discusses recognition algorithms for slots and pockets. Recognition alg... View full abstract»

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  • Fraunhofer Institute: building on a decade of computer graphics research

    Publication Year: 1998 , Page(s): 10 - 16
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (604 KB)  

    The Fraunhofer Institute for Computer Graphics in Darmstadt, Germany has been one of the world's leading centers of applied research in computer graphics. The paper discusses the key technology and application areas of the Institute. Topics discussed include user interfaces, networked computer graphics and virtual reality View full abstract»

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  • On-the-fly texture computation for real-time surface shading

    Publication Year: 1998 , Page(s): 44 - 58
    Cited by:  Papers (1)  |  Patents (13)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1048 KB)  

    Standard texture mapping hardware enables rapid rendering of color mapped surfaces with interpolated surface shading. New algorithms extend this to bump mapping, Phong shading, and reflection mapping. We first introduce the bidirectional reflectance function we wish to optimize, split into diffuse, specular and environment terms. Casting the diffuse term as a table lookup, we introduce lighting ta... 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.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
L. Miguel Encarnação
University of Iowa