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IEEE Computer Graphics and Applications

Issue 2 • Date Feb. 1986

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Displaying Results 1 - 25 of 28
  • IEEE Computer Graphics and Applications

    Publication Year: 1986, Page(s): c1
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  • The Visual Computer [advertisement]

    Publication Year: 1986, Page(s): c2
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  • Table of contents

    Publication Year: 1986, Page(s): 1
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  • IEEE Computer Society

    Publication Year: 1986, Page(s): 2
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  • Cherries in Needlepoint Texture

    Publication Year: 1986, Page(s):3 - 5
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  • Interactive People Make Designs Work

    Publication Year: 1986, Page(s):6 - 9
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  • Letters to the Editor

    Publication Year: 1986, Page(s): 10
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  • Moving?

    Publication Year: 1986, Page(s): 11
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  • Erratum

    Publication Year: 1986, Page(s): 11
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  • An Implementer's View of PHIGS

    Publication Year: 1986, Page(s):12 - 23
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8249 KB)

    The Programmer's Hierarchical Interactive Graphics System (PHIGS) specifies an interface for programming device-independent computer graphics applications. After a brief review of PHIGS concepts, an experimental environment used to study and evaluate the proposed standard is presented. The basic structure and distribution of function in this PHIGS implementation is discussed. We describe the archi... View full abstract»

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  • The Generation of Color Sequences for Univariate and Bivariate Mapping

    Publication Year: 1986, Page(s):24 - 32
    Cited by:  Papers (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6414 KB)

    Recent technological advances have made it feasible to produce full color statistical maps on computer-controlled display systems. This has caused an appraisal of the use of color to represent statistical variables, and the development of a theoretical structure for the choice of suitable univariate and bivariate map coloring schemes. Realization of such schemes in an intuitive and controlled way ... View full abstract»

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  • Parametric Spline Curves and Surfaces

    Publication Year: 1986, Page(s):33 - 34
    Cited by:  Patents (2)
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  • Rectangular v-Splines

    Publication Year: 1986, Page(s):35 - 40
    Cited by:  Papers (45)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4641 KB)

    This article describes and presents examples of some techniques for the representation and interactive design of surfaces based on a parametric surface representation that user v-spline curves. These v-spline curves, similar in mathematical structure to v-splines, were developed as a more computationally efficient alternative to splines in tension. Although splines in tension can be modified to al... View full abstract»

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  • Ray Tracing Free-Form B-Spline Surfaces

    Publication Year: 1986, Page(s):41 - 49
    Cited by:  Papers (32)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7600 KB)

    We present a method for using ray tracing to render spline surfaces¿one that is suitable for any object generated from control vertices via tensor-product B-splines. The method derives from kajiya's work on ray tracing procedurally defined surfaces1 and makes use of two preprocessing steps. One involves the controlvertex refinement recurrences due to Riesenfeld et. al.2, and the second generates ... View full abstract»

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  • Manipulating Shape and Producing Geometuic Contnuity in ß-Spline Curves

    Publication Year: 1986, Page(s):50 - 56
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1955 KB)

    This article examines some of the desirable features of ß-splines that make them particularly suitable for computer-aided design. First, a theoretical analysis is presented regarding the effects upon the shape of a design curve when the bias and tension parameters are allowed to vary in certain ways. Second, the concept of geometric continuity is discussed, and conditions are derived upon the con... View full abstract»

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  • Urn Models and Beta-Splines

    Publication Year: 1986, Page(s):57 - 64
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6585 KB)

    Splines were originally studied in approximation theory where the focus is on approximating explicit functions of the form y = f(x) or z = f(x,y). These splines were later adopted by mathematicians and computer sicentists for use in computer-aided geometric design (CAGD) where the emphasis was shifted to parametric curves and surfaces. Initially the continuity conditions for splines developed in a... View full abstract»

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  • Selective Update

    Publication Year: 1986, Page(s):65 - 67
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  • Exploring the Art and Science of Computer Aided Engineering [advertisement]

    Publication Year: 1986, Page(s): 66
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  • Erratum

    Publication Year: 1986, Page(s):67 - 69
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  • New products

    Publication Year: 1986, Page(s):70 - 76
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  • Computer Scientist [Employment opportunities]

    Publication Year: 1986, Page(s): 75
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  • Product highlights [index of advertisers and products]

    Publication Year: 1986, Page(s): 77
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  • Professional Calendar

    Publication Year: 1986, Page(s):78 - 79
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  • A Taste of Smalltalk

    Publication Year: 1986, Page(s): 79
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  • Advertiser Index - February 1986

    Publication Year: 1986, Page(s): 80
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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
University of Iowa