逆向工程中逐层扫描数据的近似蒙面算法

A new skinning method in reverse engineering

论述了逆向工程CAD/CAM系统的概念,逆向工程中重构CAD模型的几个阶段。讨论了断层扫描数据重构中利用普通的蒙面法生成曲面和Piegel提出的关于逐层扫描数据B样条曲面拟合的近似蒙面算法存在的问题,给出了一种新的利用统一的节点矢量进行逐层扫描数据插值的近似蒙面算法。

The conception of CAD/CAM in reverse engineering and some procedures of CAD model reconstruction are illustrated in this paper. In the reconstruction of cloud data, some problems in the traditional skinning method or Piegel's algorithm of B-spline surface fitting are discussed. A new skinning method is given, in which the knot vectors of the spline curves are selected according to a standard knot vector,and the standard knot vector is adjusted adaptively then.