相机靶面安装误差标定方法

Calibration Method of Installation Error of Camera Sensor Plane

由于工艺水平的限制,相机靶面不可避免地存在位置安装误差和指向安装误差,为了消除靶面安装误差的影响,定性分析了靶面安装误差;理论推导出显式包含指向安装误差的误差模型及成像模型;得到综合考虑靶面指向安装误差和镜头畸变的全像差模型;利用标定结果对实际像点进行修正。仿真和半实物实验验证了模型和标定方法的正确性,比较得知全像差模型相对于传统像差模型对实际像点有更好的修正效果。

Camera sensor plane unavoidably contains position installation error and pointing installation error because of the limitation of technologic level. In order to eliminate the influence of installation error, the installation error of target is analyzed qualitatively. It is found that the installation error model and imaging model which explicitly contain pointing installation error of the camera sensor plane. The full aberration model which includes pointing installation error and lens distortion is obtained through a series of transformation. The real image points are corrected based on the calibration results. Numerical simulation and experimental results of half practicality show the correctness and feasibility of the model, and corrected real image points based on calibration results proves that the full aberration model works more effectively than traditional aberration model.