IEEE Computer Graphics and Applications

Issue 2 • March 1992

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Displaying Results 1 - 7 of 7
  • Tutorial: time-multiplexed stereoscopic computer graphics

    Publication Year: 1992, Page(s):20 - 30
    Cited by:  Papers (12)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1269 KB)

    Time-multiplexed stereoscopic systems, which present the stereoscopic image by alternating right- and left-eye views of a scene on a CRT, are considered. The current technology for stereoscopic computer graphics is introduced, and an overview of factors important to the proper construction and display of computer images in a time-multiplexed environment is provided. The discussion covers the compu... View full abstract»

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  • Extensions of the linear and area lighting models

    Publication Year: 1992, Page(s):31 - 38
    Cited by:  Papers (5)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1010 KB)

    Techniques that aid the realistic rendering of lighting effects achieved from linear (1-D) and area (2-D) light sources are presented. They are based on a radiosity model that can be inserted into any traditional ray tracer. The approach is applied to both a 1-D light, analogous to a fluorescent tube, and to a 2-D light, analogous to a light set into the ceiling.<> View full abstract»

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  • Volume visualization of sparse irregular meshes

    Publication Year: 1992, Page(s):40 - 48
    Cited by:  Papers (34)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (846 KB)

    An algorithm that was designed for the data typically found in reservoir simulation and structural analysis is presented. Designed for general applicability and high efficiency, it can be used to visualize scalar volumes of irregular computational meshes. The algorithm accepts as input virtually any 3-D mesh used in computer simulations. Pictures of practical value can be drawn interactively.< View full abstract»

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  • Performance anomalies in boundary data structures

    Publication Year: 1992, Page(s):49 - 58
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (735 KB)

    A Delta -shaped data structure that is more compact and efficient under certain conditions than existing ones is proposed. The method has excellent storage efficiency (6E, with E being the total number of edges) and provides improved access time in a virtual memory environment. The discussion covers previous work, virtual memory and databases, determining record access costs, constant-time data sc... View full abstract»

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  • An intersection algorithm based on Delaunay triangulation

    Publication Year: 1992, Page(s):59 - 67
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (772 KB)

    A robust method for finding points of intersection of line segments in a 2-D plane is presented. The plane is subdivided by Delaunay triangulation to localize areas where points of intersection exist and to guarantee the topological consistency of the resulting arrangement. The subdivision is refined by inserting midpoints recursively until the areas containing points of intersection are sufficien... View full abstract»

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  • Using tangent balls to find plane sections of natural quadrics

    Publication Year: 1992, Page(s):68 - 82
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1148 KB)

    Geometric constructions for computing plane sections of the natural quadric surfaces that operate on planes and natural quadrics in general position and orientation are developed. The procedures separate geometric descriptions of the resulting conic sections. The algorithms are extremely fast, numerically robust, and do not employ coordinate system transformations of any sort.<> View full abstract»

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  • Jim Blinn's corner-uppers and downers

    Publication Year: 1992, Page(s):85 - 91
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    Notational schemes for vectors and matrices are addressed. Previous notation is reviewed and its deficiencies exposed. A new notation, borrowed from tensor analysis, is introduced. Using this notation, almost all of geometry is reduced to tensor multiplication 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