Title:	APPROXIMATION OF 3D DATA WITH PIECEWISE SERIES EXPANSIONS FOR SURFACE INSPECTION
Author(s):	Sebastian von Enzberg, Bernd Michaelis
ISBN:	978-972-8939-48-9
Editors:	Yingcai Xiao
Year:	2011
Edition:	Single
Keywords:	Optical 3d measurement, surface quality inspection, 3d data approximation
Type:	Short Paper
First Page:	319
Last Page:	324
Language:	English
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Paper Abstract:	Optical 3D measurement with active photogrammetric systems allows for precise measurement with high lateral and depth accuracy. Measured 3D data can thus be used for surface quality inspection. The detection of surface defects is a non-trivial task especially for deformable plastics or sheet metal parts and can be solved by 3D surface approximation with series expansion. In this paper we show that splitting of complex parts into smaller patches with piecewise series expansions yields better part approximation. A method is proposed which retains smooth transitions between these patches, thus allowing continuous measurement along patch boundaries.
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