摘要
给出用双圆弧样条逼近带误差空间点列的方法。先在误差范围内用三次B样条曲线逼近带误差的点列,接着把点列投影到B样条曲线上求得切向,最后采用最长步长算法,生成双圆弧样条逼近该点列。该方法能在给定误差限内以尽量少的双圆弧段数逼近带误差点列,对大挠度的点列逼近也适用。
A method for approximating space data with biarcs is presented. The main idea is to approximate the error data with 3rd-order B-spline curve, and to project the data to the B-spline curve for the tangent. The longest step algorithm is used to build biarc spline to approximate the data. The method can approximate error data by only a few biarc segments in the given error bound, and is ap- plicable to large deflection data.
出处
《福建工程学院学报》
CAS
2008年第6期742-744,共3页
Journal of Fujian University of Technology
关键词
双圆弧
空间点列
逼近
biarc
space data
approximation
