一种基于CMOS图像传感器的大视场角度测量装置的误差校正方法

基于CMOS图像传感器的大视场角度测量装置的设计方案,重点研究了装配误差和图像畸变对角度测量精度的影响,得到了系统的综合误差模型。介绍了利用经纬仪校正自准直光路中装配误差和图像畸变误差的步骤,即通过抽取量程内若干控制点,再根据综合误差模型拟合得到整个量程的校正数据。仿真实验验证了此方法的适用性,并将此方法和常见的分段线性插值法以及多项式拟合法进行了性能对比。

Calibration of a wide field range angulometer based on CMOS image sensor

The principle of a wide field range angulometer based on CMOS image sensor is introduced. The assembly errors and the imaging aberration are analyzed, and then a simplified error model is given out. According to this model, the calibration method and steps are indicated. The simulating experiment proves the feasibility of this method, and the performance is better than other universal methods.