北京航空航天大学学报 ›› 2009, Vol. 35 ›› Issue (3): 347-350.

• 论文 • 上一篇    下一篇

基于柔性平面靶标的摄像机现场标定方法

余明浪1, 魏振忠2, 孙军华2   

  1. 1. 成都大学 工业制造学院, 成都 610106;
    2. 北京航空航天大学 仪器科学与光电工程学院, 北京 100191
  • 收稿日期:2008-03-24 出版日期:2009-03-31 发布日期:2010-09-16
  • 作者简介:余明浪(1966-),女,四川成都人,讲师,yminglang2008@163.com.
  • 基金资助:

    教育部新世纪优秀人才支持计划资助项目(NCET-07-0043);国家自然科学基金资助项目(50875014)

On-spot camera calibration method based on flexible planar target

Yu Minglang1, Wei Zhenzhong2, Sun Junhu2   

  1. 1. School of Industrial Manufacturing, Chengdu University, Chengdu 610106, China;
    2. School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2008-03-24 Online:2009-03-31 Published:2010-09-16

摘要: 提出一种摄像机现场柔性平面靶标标定方法.该方法仅需在平面靶标上设置少量空间三维坐标已知特征点.在这些特征点中,任意共线的特征点可以确定一条直线,因此可以确定若干条直线.根据在透视投影变换下,直线和直线的交点均为不变量的性质,可获得除已知特征点之外的大量标定特征点用于摄像机标定.基于误差传播理论,对标定点的不确定度进行了详细分析.采用研制的尺寸为100mm×100mm,加工精度为0.01mm的柔性平面靶标,对摄像机进行了现场标定实验,获得了0.032mm的标定精度.

Abstract: A flexible planar target method was proposed to perform on-spot camera calibration. In this method, only several characteristic points with known 3D coordinates are needed to be preset on the planar target, and among these preset characteristic points, the ones which are collinear could determine a straight line, so a number of straight lines can be determined. Furthermore, under the perspective projecting transformation, striaight line and the intersection point of two straight lines are invariables. So, based on the above mentioned properties, a great amount of points which differ from the preset characteristic points on the planar target can be obtained for on-spot camera calibration. Detailed error analysis of the obtained calibration points was conducted based on error propagation law. A real flexible planar target, which is of the size of 100mm×100mm and the accuracy of 0.01mm, was made to perform the experiments of on-spot camera calibration, and the calibration accuracy is 0.032mm.

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发