A Novel Multi-Camera Calibration Method based on Flat Refractive Geometry

International Conference on Robotics and Mechantronics

机械制造;无线电电子学;计算机科学

Huang, S.^1 ; Feng, M.C.^1 ; Zheng, T.X.^1 ; Li, F.^2 ; Wang, J.Q.^1 ; Xiao, L.F.^1

School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing

400065, China^1

School of Automation, Chongqing University of Posts and Telecommunications, Chongqing

400065, China^2

关键词: Bundle adjustments;    Calibration error;    Cameras calibration;    Mean values;    Multi-camera calibration;    Reprojection error;    Standard deviation;    Transparent glass;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/320/1/012016/pdf
DOI  :  10.1088/1757-899X/320/1/012016

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Multi-camera calibration plays an important role in many field. In the paper, we present a novel multi-camera calibration method based on flat refractive geometry. All cameras can acquire calibration images of transparent glass calibration board (TGCB) at the same time. The application of TGCB leads to refractive phenomenon which can generate calibration error. The theory of flat refractive geometry is employed to eliminate the error. The new method can solve the refractive phenomenon of TGCB. Moreover, the bundle adjustment method is used to minimize the reprojection error and obtain optimized calibration results. Finally, the four-cameras calibration results of real data show that the mean value and standard deviation of the reprojection error of our method are 4.3411e-05 and 0.4553 pixel, respectively. The experimental results show that the proposed method is accurate and reliable.