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Display of Surfaces from Volume Data

Published: 01 May 1988 Publication History
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  • Abstract

    The application of volume-rendering techniques to the display of surfaces from sampled scalar functions of three spatial dimensions is discussed. It is not necessary to fit geometric primitives to the sampled data; images are formed by directly shading each sample and projecting it onto the picture plane. Surface-shading calculations are performed at every voxel with local gradient vectors serving as surface normals. In a separate step, surface classification operators are applied to compute a partial opacity of every voxel. Operators that detect isovalue contour surfaces and region boundary surfaces are examined. The technique is simple and fast, yet displays surfaces exhibiting smooth silhouettes and few other aliasing artifacts. The use of selective blurring and supersampling to further improve image quality is described. Examples from molecular graphics and medical imaging are given.

    References

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    Published In

    cover image IEEE Computer Graphics and Applications
    IEEE Computer Graphics and Applications  Volume 8, Issue 3
    May 1988
    67 pages
    ISSN:0272-1716
    Issue’s Table of Contents

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    IEEE Computer Society Press

    Washington, DC, United States

    Publication History

    Published: 01 May 1988

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