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Indexed by:期刊论文

Date of Publication:2011-07-01

Journal:JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE C-COMPUTERS & ELECTRONICS

Included Journals:SCIE、EI

Volume:12

Issue:7

Page Number:523-532

ISSN No.:1869-1951

Key Words:Reverse engineering; Strip-shaped points; Curve reconstruction; Anisotropic adaptive sampling

Abstract:We present a novel algorithm to reconstruct curves with self-intersections and multiple parts from unorganized strip-shaped points, which may have different local shape scales and sampling densities. We first extract an initial curve, a graph composed of polylines, to model the different structures of the points. Then a least-squares optimization is used to improve the geometric approximation. The initial curve is extracted in three steps: anisotropic farthest point sampling with an adaptable sphere, graph construction followed by non-linear region identification, and edge refinement. Our algorithm produces faithful results for points sampled from non-simple curves without pre-segmenting them. Experiments on many simulated and real data demonstrate the efficiency of our method, and more faithful curves are reconstructed compared to other existing methods.