Title: An automatic modelling strategy for the reverse engineering of wrap-around freeform surfaces

Authors: Y.W. Sun, D.M. Guo, Z.Y. Jia

Addresses: Key Laboratory for Precision and Non-traditional Machining of Ministry of Education, Dalian University of Technology, Dalian, PR China. ' Key Laboratory for Precision and Non-traditional Machining of Ministry of Education, Dalian University of Technology, Dalian, PR China. ' Key Laboratory for Precision and Non-traditional Machining of Ministry of Education, Dalian University of Technology, Dalian, PR China

Abstract: In this paper, a modelling strategy is proposed for the reverse engineering of wrap-around freeform surfaces. The method only needs to manually select four boundary corner points from sampled points. Then sampled points are converted into 2D data points based on the viewpoint principle. Four boundaries of the planar point set are automatically extracted by using a boundary-tracing algorithm. A bilinear coons surface is subsequently established with the given curved boundaries. As a result, the parameterisation of sampled points is gained after thinning data points. Experimental results are finally given to testify the feasibility of the proposed approach.

Keywords: parameterisation; surface reconstruction; reverse engineering; freeform surfaces; point cloud; modelling strategy.

DOI: 10.1504/IJMPT.2008.019772

International Journal of Materials and Product Technology, 2008 Vol.33 No.1/2, pp.50 - 64

Published online: 30 Jul 2008 *

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