利用无人机航摄影像实现特种目标的定位

Using unmanned aerial photography images to realize the localization of special targets

为了提高野外荒芜地区特种目标定位的效率和安全性,本文提出了一种利用无人机航摄影像进行特种目标定位的方法。首先利用GNSS RTK技术在作业区域布设像控点,然后由无人机搭载正射相机获取特种目标区域的正射影像,最后通过边缘提取和椭圆中心拟合从影像上获取的目标中心点坐标,并进行精度评定。将该方法应用于某飞行器的落点测量任务中,实现了落点坐标的准确测量,精度达6 cm。

In order to improve the efficiency and safety of special target positioning in wilderness areas,a method of using unmanned aerial photography images for special target positioning is proposed.Firstly,GNSS RTK technology is used to set up image control points in the work area.Then,the drone is equipped with an orthophoto camera to obtain orthophoto images of the special target area.Finally,the coordinates of the target center point are obtained from the image through edge extraction and elliptical center fitting,and accuracy evaluation is carried out.This method was applied to the landing point measurement task of a certain aircraft,achieving accurate measurement of landing point coordinates with an accuracy of 6 cm.