In recent years,as UAV technology becomes more and more mature,UAV-based tilt photogrammetry technology is widely used in constructing digital three-dimensional maps of digital cities,digital campuses,digital parks,etc.In this study,a quadcopter UAV with RTK real-time differential positioning technology,equipped with a D-OP3000 high-precision five-lens camera,was used to collect tilted image data of a university campus.RTK-GNSS static control measurement technology was utilized to collect coordinate data of the checkpoints and image-control points in the study area.The Smart3D modeling software was used to carry out two independent real-life 3D modeling:one without image control points and one with added image control points,and the accuracy analysis was conducted based on the checkpoint data.The 3D plane and elevation inaccuracies of the image-control-free point models were 0.0645m and 0.0856m,respectively;and those of the image-control-added point models were 0.0630m and 0.0751m.The study showed that the model still has a high level of accuracy under image-control-free conditions,and it can greatly save labor and time costs.
关键词
倾斜摄影测量/免像控实景三维/实时差分定位/精度对比分析
Key words
Tilt photogrammetry/3D modeling without image control points of live-action/Real-time differential positioning/Comparative accuracy analysis
维普
万方数据