Surface Analysis Methods

Authors:
James Beck;Rida Farouki;John Hinds
Affiliations:
General Electric Company;General Electric Company;General Electric Company
Venue:
IEEE Computer Graphics and Applications
Year:
1986

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Abstract

Parametric polynomial surfaces defined to satisfy given interpolatory or boundary constraints often suffer extraneous undesired features because of poor control over their many degrees of freedom. Current techniques for detecting and remedying such unexpected surface characteristics are primitive and inadequate. This article describes several surface analysis tools useful in detecting such anomalous surface features. These include standard techniques such as contouring and high-resolution shaded image displays based on direct ray tracing, and some novel methods such as maps of the principal curvatures, the integration of lines of curvature to show the variation ofthe principal directions, and the determination of geodesic paths on the surface.