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基于球几何特征的摄像机内参分步标定方法

赵云涛 孙军华 陈勖 宫政

赵云涛, 孙军华, 陈勖, 等 . 基于球几何特征的摄像机内参分步标定方法[J]. 北京航空航天大学学报, 2014, 40(4): 558-563. doi: 10.13700/j.bh.1001-5965.2013.0293
引用本文: 赵云涛, 孙军华, 陈勖, 等 . 基于球几何特征的摄像机内参分步标定方法[J]. 北京航空航天大学学报, 2014, 40(4): 558-563. doi: 10.13700/j.bh.1001-5965.2013.0293
Zhao Yuntao, Sun Junhua, Chen Xu, et al. Camera calibration from geometric feature of spheres[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(4): 558-563. doi: 10.13700/j.bh.1001-5965.2013.0293(in Chinese)
Citation: Zhao Yuntao, Sun Junhua, Chen Xu, et al. Camera calibration from geometric feature of spheres[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(4): 558-563. doi: 10.13700/j.bh.1001-5965.2013.0293(in Chinese)

基于球几何特征的摄像机内参分步标定方法

doi: 10.13700/j.bh.1001-5965.2013.0293
基金项目: 

国家自然科学基金资助项目 (61275162,61127009)

详细信息
    作者简介:

    赵云涛(1989- ),男,天津人,硕士生,roojieryun@sina.com.

  • 中图分类号: TP391.4

Camera calibration from geometric feature of spheres

  • 摘要: 在摄像机标定过程中,球形靶标对图像数量、拍摄角度要求小,能够适应遮挡环境,在使用中具有明显优势.在分析球投影模型几何性质的基础上,提出一种利用球靶标分步标定摄像机内部参数的方法.该方法通过拍摄一幅包含空间中2个不同位置球体的图像,得到图像中的2条投影二次曲线;利用2条投影二次曲线的对称轴和公切线计算球心投影点,通过投影二次曲线的对称轴确定图像主点坐标,根据球心投影点和图像主点的位置关系求解归一化焦距;利用整体优化算法得到内参标定结果.仿真数据实验分析了引入测量误差的主要因素,实物标定结果与平面方格靶标方法相比误差在5%之内,重复测量结果稳定.

     

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出版历程
  • 收稿日期:  2013-05-27
  • 刊出日期:  2014-04-20

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