基于嵩山定标场的无人机数据快速成图应用

Application research on UAV data fast mapping technology based on Songshan calibration field

无人机作为一个高效的测绘平台,越来越多地被应用到生产作业中。研究无人机数据快速成图的技术基础,基于GPU加速的同名点匹配技术,并根据嵩山定标场的测绘需求进行试验。采用无人机获取的影像16 179张,结合场内高精度地面控制点,快速处理得到嵩山定标场约50km2的高精度数字正射影像图(DOM),精度为平面点位中误差2.7cm,约0.5个像素。通过试验验证基于无人机数据快速成图的高效率和高精度,同时为后续的国产卫星、大型航测相机、无人机等定标检校提供参考。

As an effective mapping platform, unmanned aerial vehicles（UAV） are increasingly being applied to the real operation and production. This paper studies the technical foundation of UAV data fast mapping, mainly the homologous point matching technology based on GPU, and makes experiments based on the Songshan calibration field mapping needs. Combining with high-precision ground control point, it carries out fast processing on 16179 UAV images and finally gets 50 square kilometers high-precision digital orthophoto map （DOM） over Songshan calibration field. And the plane position error of DOM product is 2.7 centimeters, about 0. 5 pixels. The high efficiency and accuracy of UAV data fast mapping based on GPU acceleration are verified through experiment. Meanwhile, the generated DOM can also be used as reference for further satellites, large aerial cameras and UAVs camera calibration.