王健,燕必希,孙鹏,王君,庄炜

• 1:北京信息科技大学仪器科学与光电工程学院

摘要(Abstract)：

多相机三维数字图像相关（three-dimensional digital image correlation,3D-DIC）系统在测量核燃料包壳管应变的实际应用中，多相机标定环节存在坐标系转换引发的累计误差增加及全局优化能力不足等问题。为此，提出一种基于空间标定靶的多相机全局标定方法。首先，提出为各相机在标定靶每个位姿下提供外方位参数初值的方法，保证空间后方交会正确收敛；其次，提出多相机多位姿光束平差（bundle adjustment, BA）方法，保证多相机标定精度达到全局最优。实验结果表明，该方法的标定精度较直接线性变换（direct linear transformation, DLT）方法提高了55.1%，最大位移误差标准差降低了16.3%。同时，该方法无需对标志点进行手动编号，使标定过程实现了自动化，标定效率更高。

关键词(KeyWords)： 多相机;全局标定;三维数字图像相关;光束平差法;摄影测量;应变测量

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划青年科学家项目（2023YFB3905200）

作者(Author): 王健,燕必希,孙鹏,王君,庄炜

DOI: 10.16508/j.cnki.11-5866/n.2026.01.003

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