By Topic

IEEE Computer Graphics and Applications

Issue 2 • Date March 1994

Filter Results

Displaying Results 1 - 17 of 17
  • Photorealistic terrain imaging and flight simulation

    Publication Year: 1994, Page(s):10 - 12
    Cited by:  Papers (6)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (370 KB)

    Photorealistic terrain visualization results from combining two data sets. The first contains information about terrain color (texture), usually from a vertical view angle, such as an aerial or satellite image. The second data set contains information about terrain topography, in the form of elevation samples. This data set is also known as a digital terrain model, or DTM. We can reconstruct the 3... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Solid modeling

    Publication Year: 1994
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (108 KB)

    Solid modeling deals with the representation, design, visualization. and analysis of models of 3D parts. While the embodiment of solid modeling technology in contemporary commercial CAD systems is finally beginning to fulfil the old promise of providing major improvements in the productivity of the manufacturing industry, solid modeling research remains in its infancy. Recent developments focus on... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Rasterizing algebraic curves and surfaces

    Publication Year: 1994, Page(s):14 - 23
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (827 KB)

    A new, recursive, space-subdivision algorithm for rasterizing algebraic curves and surfaces gets its accuracy from a newly devised, computationally efficient, and asymptotically correct test. The approach followed is essentially the interval arithmetic method for rendering implicit curves. The author's contribution is a particularly efficient way to construct inclusion functions for polynomials. A... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Constructive shell representations for freeform surfaces and solids

    Publication Year: 1994, Page(s):24 - 36
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1214 KB)

    We usually model freeform surfaces (mathematically, 2D r-sets embedded in 3D Euclidean space E/sup 3/) as a finite union of patches represented in the traditional parametric or the recently developed algebraic forms. The article introduces a new representation scheme for freeform surfaces called constructive shell representation (CSR), that draws on recent research on algebraic patches. CSRs of su... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Generative geometric design

    Publication Year: 1994, Page(s):37 - 45
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (801 KB)

    Boundary solid grammars use design rules that express complex geometric conditions and operations using a logical reasoning mechanism, allowing one to construct powerful rules and describe appropriate grammars for the generation of solid models for a variety of design domains. The formalism I present in this article is not sufficient for all engineering and architectural domains (e.g., polyhedral ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Solving systems of polynomial equations

    Publication Year: 1994, Page(s):46 - 55
    Cited by:  Papers (20)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1199 KB)

    Geometric and solid modelling deal with the representation and manipulation of physical objects. Currently most geometric objects are formulated in terms of polynomial equations, thereby reducing many application problems to manipulating polynomial systems. Solving systems of polynomial equations is a fundamental problem in these geometric computations. The author presents an algorithm for solving... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modeling with triangular B-splines

    Publication Year: 1994, Page(s):56 - 60
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (427 KB)

    Triangular B-splines are a new tool for modeling complex objects with nonrectangular topology. The scheme is based on blending functions and control points, and lets us model piecewise polynomial surfaces of degree n that are C/sup n-1/-continuous throughout. Triangular B-splines permit the construction of smooth surfaces with the lowest degree possible. Because they can represent any piecewise po... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Research issues in scientific visualization

    Publication Year: 1994, Page(s):61 - 63
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (354 KB)

    As an emerging research discipline, scientific visualization is developing those trappings that demonstrate growth. New algorithms are just beginning to effectively handle the recurring scientific problem of data collected at nonuniform intervals. Volume visualization today is being extended from examining scientific data to reconstructing scattered data and representing geometrical objects withou... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Research issues in volume visualization

    Publication Year: 1994, Page(s):63 - 67
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (609 KB)

    Volume visualization is a method of extracting meaningful information from volumetric data sets through the use of interactive graphics and imaging. It addresses the representation, manipulation, and rendering of volumetric data sets, providing mechanisms for peering into structures and understanding their complexity and dynamics. Typically, the data set is represented as a 3D regular grid of volu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Research issues in perception and user interfaces

    Publication Year: 1994, Page(s):67 - 69
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (397 KB)

    Current visualization tools are capable but still require too much visualization knowledge on the user's part. This requirement restricts the user in what is possible. Nor do the tools take account of what is known regarding cognition and perception. The authors focus at on three things: presentation of information to best match human cognitive and perceptual capabilities, interactive tools and sy... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Research issues in data modeling for scientific visualization

    Publication Year: 1994, Page(s):70 - 73
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (494 KB)

    This article summarizes some topics of modeling as they impinge on the future development of scientific data visualization. The benefits from visualization techniques in analyzing data are well established, but to build on these pioneering efforts, one must recognize modeling as a distinct structural component in the larger context of visualization and problem-solving systems. Volume modeling is t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Research issues in the foundations of visualization

    Publication Year: 1994, Page(s):73 - 76
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (503 KB)

    We focus on the research required to establish a foundation for the evolving needs of visualization systems. Three main topics underpin these needs: models, the need for abstractions to describe the core components of the visualization process and the interfaces between them, including users and their behavior; validation, the problem of determining whether visualizations meet consistency and effe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Research issues in vector and tensor field visualization

    Publication Year: 1994, Page(s):76 - 79
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (451 KB)

    Today, computational fluid dynamics (CFD) research is almost impossible without computer-generated visualizations of the very large amounts of data resulting from numerical simulations. Although good techniques now exist for analysis of scalar data, most existing techniques for the visualization of vector fields-the predominant data type in CFD-meet only part of what is required. Common techniques... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Research issues in modeling complex object shapes

    Publication Year: 1994, Page(s):80 - 83
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (593 KB)

    The methods for high-level abstraction of complex objects described can support mechanisms that process abstracted information directly. Accordingly, the visual computer architecture, multimedia database systems, and multimedia operating systems are attractive areas for future research. The methods discussed are: the singular points approach; decomposition using Morse theory; modeling by the manif... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Research issues in model-based visualization of complex data sets

    Publication Year: 1994, Page(s):83 - 85
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (406 KB)

    At the most abstract level, data visualization maps discrete values computed over an n-dimensional domain onto pixel colors. It is largely a dimension-reducing process justified by its leverage on human perceptual capacities for extracting information from visual stimuli. The difficulty is to implement a mapping that reveals the data characteristics relevant to the application at hand. Effective v... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Farewell to Fortran

    Publication Year: 1994, Page(s):86 - 89
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (393 KB)

    The author discusses his experience in converting to C++ programming from Fortran programming. He considers the two advantages of the C language over Fortran: pointers and recursion, and then goes on to review the many advantages of C++ over Fortran.<> View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New realities in aircraft design and manufacture

    Publication Year: 1994
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

    Considers how Boeing Computer Services in Seattle is developing two real-time applications-one in virtual reality, the other in what the company calls augmented reality, aimed at putting more information directly in front of the engineers designing aircraft and the manufacturing workers who build them. Boeing's virtual reality project plans to import aircraft CAD data to a VR environment where eng... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

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