采用无人机影像生成高原山区高精度DEM的一种方法

One Method of Using UAV Image to Generate High Resolution DEM in Mountain Plateau

无人机低空遥感作为一种新兴的航空摄影手段,近年来应用越来越广泛。在高原山区测绘大比例尺DEM往往难度较大,本文通过研究,提出利用无人机低空摄影获取数码影像,外业采用GPS测量少量控制点,内业采用多视影像匹配技术自动构建空中三角测量网,然后通过光束法平差实现快速解算,最后生成大比例尺DEM成果,实践证明是可行的。

UAV low - altitude remote sensing as a new aerial photography means is used more and more widely in recent years. As we all known, it is usually difficult to obtain large - scale DEM in the mountain plateau. In this paper, we propose a new way that uses UAV to obtain high resolution digital images and uses GPS to get a small amount of control points in the field, indoors builds aerial tri- angulation network automatically with the multi - image matching techniques, then through the bundle adjustment to realize a fast solu- tion, finally edits and generates large -scale DEM. It is proved feasible in the practice.