摘要
为获取三维超声扫查的点云数据截面线,提出一种获取该点云截面线的方法。使用切片技术提取点云的截面数据,使用谱聚类算法将截面数据点划分成多个不相交的群集,将点云集分割成若干可单独绘制成封闭曲线的点云子集;分别将点云子集插值成闭合的NURBS曲线,通过合并各曲线得到完整的截面曲线。实验结果表明,绘制的截面线具有较好的逼近效果,验证了该方法有效可靠。
To obtain the section line of point cloud generated by three-dimensional ultrasound scanning,a method of gaining point cloud section line by interpolation was proposed.The slicing technology was used to extract the data of cross section,and the spectral clustering algorithm was applied to this method to divide the cross section into several disjoint clusters,so the point cloud set was segmented into several subsets that could be interpolated to closed curves.Point cloud subsets were interpolated to NURBS curve respectively through curve interpolation.Complete section curve was obtained with all curves＇ combination.Experimental results indicate that the section line has good approximation effects,and it is effective and reliable.
出处
《计算机工程与设计》
北大核心
2016年第8期2116-2119,2217,共5页
Computer Engineering and Design
基金
"高档数控机床与基础制造装备"国家科技重大专项基金项目(2014ZX04012015)
关键词
点云
谱聚类算法
曲线插值
NURBS曲线
超声检测
point cloud
spectral clustering algorithm
curve interpolation
NURBS curve
ultrasonic testing
