随动系统自动几何精纠正模型与算法实现

分析了某航空摄影测量设备中相机的类型及其随动系统工作的原理与特点,对拍摄得到的图像几何变形类型和规律做了分析与总结,并提出了该系统几何精纠正和参数矩阵求解模型。在此基础上,为满足系统实时性要求,利用随动系统的特点对所提出的参数矩阵作了进一步简化处理,建立了随动系统参数求解简化模型。根据该航空摄影测量设备应用环境,分析了其他因素对拍摄图像几何变形的影响。所提出的算法解决了航空摄影测量面阵CCD相机随动系统自动几何纠正的原理和方法,提出的求解模型在飞行实验中得到了很好的验证。

Automatic Geometric Rectification Model of Follow-up System

Based on the type of the aerial camera and the principles and the features of its follow-up system, this paper analyses geometric distortion type and its features. Geometric rectification model of the system and its coefficient matrix are built. But the way of getting coefficient matrix for geometric rectification model is simplified ulterior by analyzing the principles of its follow-up system because of the requirement of the real time system. At the same time, other factors are considered based on the application environment of the system. The algorithm in the paper resolves auto geometric rectification of area CCD camera with fellow-up system. The output of the flight test proves the usefulness and availability of the algorithm.