期刊文献+

一种基于小波的三维扫描线数据处理算法 被引量:2

A NEW 3D SCANNING DATA PROCEEDING METHOD BASED ON WAVELET
下载PDF
导出
摘要 从三维点云数据中提取实物的边界特征点,在以计算机视觉为基础的数字化曲面重建过程中有非常重要的意义。为提高精度,重建之前,必须对通过各种方法获得的大量原始散乱数据进行除噪及精简处理。基于此,提出了一种基于小波变换的激光测量扫描边界特征点提取算法,我们通过严格的理论推导,构造了一种类似mexh小波的小波基来对两种边界特征点进行检测。多次实验结果显示:该算法有效地避免了噪声和冗余数据的干扰,较精确地定位到了边界特征点,通过重建原始数据,准确地提取了三维实体的外型轮廓,同时也为实现冗余数据的精简提供了一种新的思想。 It is meaningful to abstract edge feature point from a large amount of 3D point cloud in the reconstruction of curved surface. But the 3D data we get must be proceeded firstly in order to avoid the distortion and deviation during the course of reconstruction. According to this, a new approach based on wavelet edge detection is presented. We select a kind of wavelet similar to mexh as a tool exclusively to detect these two kinds of edge feature points ,the following experiments show that:the edge feature points are located accurately ignoring the disturbance of noise and redundancy. Comparing with former data proceeding methods, this method is more accurate and overcomes the influence of noise simultaneously.
作者 张慧 刘伟军
出处 《计算机应用与软件》 CSCD 北大核心 2006年第9期8-10,42,共4页 Computer Applications and Software
基金 国家863高技术研究发展计划基金资助(编号:2001AA421160)
关键词 小波 点云 边界特征点 mexh小波 Wavelet 3D point cloud Edge feature point Mexh
  • 相关文献

参考文献7

  • 1Ching-Chih Tai and Ming-Chih Huang.The processing of data points basing on design internt I reverse engineering.International of Machine Tools & Manufacturing,40,pp.1913~1927,2000.
  • 2Abdalla Alrashdan,saeid Motavalli,Behrooz Falahi.Automatic segmentation of digitized data for reverse engineering applications.IIE Transaction,32,pp.59~69,2000.
  • 3Jian Ming HU,Hong Yan,Polygonal approximation of digital curves based on the principles of conceptual organization.Pattern Recognition,1997,30(5):314~319.
  • 4孙玉文."面向快速原形制造的反求工程关键技术研究"[J].大连理工大学学报,2000,4:13-35.
  • 5S.Mallat,et al.,Singularity detection and processing with wavelets,IEEE Trans.IT-38(2),pp.617~643,1992.
  • 6S.Mallat,et al.Characterization of signals from multiscale edges.IEEE Trans.PAMI-14(7),710~732,1992.
  • 7Stephane Mallat.A Wavelet Tour of Signal Processing(Second Edition).Academic Press.1999.

同被引文献14

引证文献2

二级引证文献6

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部