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Proceedings Paper

Surface detection with subvoxel accuracy using 3D directional derivatives
Author(s): Xiaogu Wu; William G. Wee
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Paper Abstract

A surface detection method using 3D directional for extracting surface points of a solid object from its cross- sectional slices' CT images is presented. The formulas for calculating 3D directional derivatives are derived using facet model. The subvoxel accuracy is obtained by locating the zeros of the 3D second directional derivative along the estimated gradient. Experiments for applying this method to CT images of real industrial parts are performed and some results are shown.

Paper Details

Date Published: 28 January 1999
PDF: 11 pages
Proc. SPIE 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III, (28 January 1999); doi: 10.1117/12.339907
Show Author Affiliations
Xiaogu Wu, Univ. of Cincinnati (United States)
William G. Wee, Univ. of Cincinnati (United States)


Published in SPIE Proceedings Vol. 3586:
Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III
Ajit K. Mal, Editor(s)

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