首页 | 本学科首页   官方微博 | 高级检索  
     

半径约束最小二乘圆拟合方法及其误差分析
引用本文:刘珂,周富强,张广军.半径约束最小二乘圆拟合方法及其误差分析[J].光电子.激光,2006,17(5):604-607.
作者姓名:刘珂  周富强  张广军
作者单位:北京航空航天大学仪器科学与光电工程学院,北京,100083
摘    要:针对基于线结构光视觉检测类圆工件三维测量中的光条圆弧特征数据所占整圆比例偏小,提出了基于半径约束最小二乘圆拟合方法。详细地分析了样本特征数据噪声对圆心定位精度的影响,并进行了仿真实验。实验结果表明,在光条圆弧特征数据所占整圆比例偏小的条件下,半径约束最小二乘圆拟合方法可以有效地提高圆中心定位精度。

关 键 词:最小二乘法  半径约束  圆拟合  线结构光  误差分析
文章编号:1005-0086(2006)05-0604-04
收稿时间:2005-08-09
修稿时间:2005-08-092005-12-03

Radius Constraint Least-square Circle Fitting Method and Error Analysis
LIU Ke,ZHOU Fu-qiang,ZHANG Guang-jun.Radius Constraint Least-square Circle Fitting Method and Error Analysis[J].Journal of Optoelectronics·laser,2006,17(5):604-607.
Authors:LIU Ke  ZHOU Fu-qiang  ZHANG Guang-jun
Abstract:In the process of 3-D measurement tured light vision sensor, feature data of the of the workpiece in shape of arc with strucstructured light arc is inadequate compared with the whole circle, which results in the location of the circle centre being of low precision. Least-squares method based on radius constraint is proposed in the paper to solve the problem. Influence of the noise in sample data the on the locating of circle centre is analyzed in detail, and simulated experiments are implemented. Results of experiments show that under the circumstances that feature data of the structured light arc is inadequate compared with the whole circle, the method proposed above can improve the accuracy of circle fitting efficiently.
Keywords:least-squares method  radius constrained  line structured light  analysis of error
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《光电子.激光》浏览原始摘要信息
点击此处可从《光电子.激光》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号