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26 September 2007 Smooth 3D edge detection in scarfed composite surfaces
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We describe a new algorithm for 3D edge detection on composite part surfaces based upon phase shift analysis. Current phase shift based algorithms generate 3D surface profiles, they do not directly compute 3D edge information. The proposed algorithm has been developed in this context for 3D edge detection. One advantage of this method is its ability to measure smooth 3D edges that cannot be accurately measured using traditional contact techniques. A dense 3D point cloud representing part edges are computed, all such edges in view may be computed simultaneously. The inherent accuracy available with phase shift analysis is leveraged for detecting the smooth edges with minimal error. Experimental results with some test parts are presented.
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Rajesh Ramamurthy, Megha Navalgund, Qingying Hu, and Kevin G. Harding "Smooth 3D edge detection in scarfed composite surfaces", Proc. SPIE 6762, Two- and Three-Dimensional Methods for Inspection and Metrology V, 676202 (26 September 2007);

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