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Title: Geometry Of Irregular Objects
Author: Daisuke Asahina,Michael A. Taylor
Source: 2010 Measurement Science Conference
Year Published: 2010
Abstract: The geometry of irregular objects (rock particles) were (directly) measured using two devices: a CT scanner and a laser ranging surface scanner. The properties measured include volume, surface area and weight. These permitted the estimation of relative density and some topological quantities. The complex problem of shape measures is discussed. The results are compared with some previous studies in which multiple 2-d projections were used to estimate 3-d geometry. The results were used to evaluate the accuracy of the previous 2-d projections method and then the new results used to extend the characterization of irregular 3-d particles of a wide range of sizes. The results also permit the investigation of some previously inaccessible topological conjectures concerning 3-d particles.

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