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Determination of a convex body from the average of projections and stability results

Published online by Cambridge University Press:  01 May 1998

K. K. SPRIESTERSBACH
Affiliation:
Department of Mathematics, University of Dallas, Irving, Texas 75062 USA; e-mail: [email protected]

Abstract

Analysis of projections of a convex body is a familiar topic in tomography. However, instead of considering standard projection bodies, this work investigates a convex body introduced by Schneider [8] which is a Minkowski average of projections. The question addressed here is similar to that posed by Goodey and Weil [4] with respect to Minkowski averages of sections, as opposed to projections, that is, can the shape of a convex body be determined from random sections? Their main result shows that a body K is determined by the average of its two-dimensional sections, but not by the average of its one-dimensional sections. The goal of this study is to uncover the extent to which a convex body is determined by the average of its projections.

Type
Research Article
Copyright
Cambridge Philosophical Society 1998

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