Wrap-around B-spline Surface Fitting to Digitized Data With Applications to Reverse Engineering

[+] Author and Article Information
D. J. Weir, M. J. Milroy, C. Bradley, G. W. Vickers

Department of Mechanical Engineering, University of Victoria, P.O. Box 3055 Victoria, B.C., V8W 3P6, Canada

J. Manuf. Sci. Eng 122(2), 323-330 (Oct 01, 1997) (8 pages) doi:10.1115/1.538922 History: Received February 01, 1995; Revised October 01, 1997
Copyright © 2000 by ASME
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Photograph of the laser scanner mounted on the CMM
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(a) Chordal deviation analysis, points b and c are flagged as points of high curvature on the scan line ad; (b) Allocation of data points to voxel bins
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Raw laser scanned data, connected by line segments, on seat model
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Thinned data after chordal deviation analysis and voxel binning
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Boundary and interior curves, isometric view
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Components of the error vector given by Eq. (9)
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(a) Surface control net after 1 iteration; (b) Surface control net after 20 iteration
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Reduction of total RMS error per iteration
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Error vectors, short lines, from the approximated surface to each data point
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Shaded image of the final surface approximation
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Shaded image of surface defining telephone receiver handset




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