The University of Edinburgh -
Division of Informatics
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Research Paper #495

Title:Determining Back-Facing Curved Model Surfaces by Analysis at the Boundary
Date:Dec 1990
Presented:To be presented at the 3rd International Conference on Compute Vision, Osaka, Japan, December 1990
Abstract:This paper examines the problem of predicting when a model surface patch on a three-dimensional object is totally back-facing, and hence need not be searched for during object recognition. Examining every point on the surface patch is inelegant and impractical, yet difficulties arise with curved surface patches. The paper concludes that visibility can be determined from an analysis of the surface orientation at the patch boundary for a wide class of model surface patch types (i.e. those having constant principal curvature signs), under orthographic projection.

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