NURBS curve and surface fitting for reverse engineering

被引：0
作者：
W. Ma
J. -P. Kruth
机构：
[1] Katholieke Universiteit Leuven,Division of Production Engineering, Machine Design and Automation
[2] City University of Hong Kong,Department of Manufacturing Engineering and Engineering Management
来源：
The International Journal of Advanced Manufacturing Technology | 1998年 / 14卷
关键词：
B-splines; CAD; NURBS; Reverse engineering;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Reverse engineering is an approach for constructing a computer-aided design (CAD) model from a physical part through dimensional measurement and surface modelling. This paper presents alternatives for reverse engineering of free-form parts using Non-Uniform Rational B-Spline (NURBS) surfaces. A two-step linear approach is employed for fitting NURBS curves and surfaces using the measured points. During the first step, the weights of the control points are identified from a homogeneous system using symmetric eigenvalue decomposition. The control points are further processed in a way similar to B-spline curve and surface fitting. Some examples are presented to illustrate both the steps of reverse engineering and the process of NURBS curve and surface fitting.
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页码：918 / 927
页数：9
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