NDLI: Finding Approximate Shape Regularities for Reverse Engineering

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Langbein, F. C. Mills, B. I. Marshall, A. D. Martin, R. R.
Copyright Year	2001
Abstract	Current reverse engineering systems can generate boundary representation (B-rep) models from 3D range data. Such models suffer from inaccuracies caused by noise in the input data and algorithms. The quality of reverse engineered geometric models can be improved by finding candidate shape regularities in such a model, and constraining the model to meet a suitable subset of them, in a post-processing step called . This paper discusses algorithms to detect such approximate regularities in terms of similarities between describing properties of faces, edges and vertices, and small groups of these elements in a B-rep model with only planar, spherical, cylindrical, conical and toroidal faces. For each group of similar feature objects they also seek special feature objects which may represent the group, e.g. an integer value which approximates the radius of similar cylinders. Experiments show that the regularities found by the algorithms include the desired regularities as well as spurious regularities, which can be limited by an appropriate choice of tolerances.
Starting Page	282
Ending Page	290
Page Count	9
File Format	PDF
ISSN	15309827
e-ISSN	19447078
Journal	Journal of Computing and Information Science in Engineering
Volume Number	1
Issue Number	4
DOI	10.1115/1.1430232
Language	English
Publisher	The American Society of Mechanical Engineers
Publisher Date	2001-10-01
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Algorithms Reverse engineering Shapes
Content Type	Text
Resource Type	Article
Subject	Computer Science Applications Computer Graphics and Computer-Aided Design Software Industrial and Manufacturing Engineering

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