Rowan has developed an autonomous aerial surveying platform, Osprey, in collaboration with ESP and the Dynamic Robot Systems (DRS) group at ORI. Osprey can perform multimission autonomous surveys of completely unknown 3D structures and is a great example of the research done in both ESP and DRS. You can watch a video of it in action on YouTube and read the paper submitted to Field Robotics on arXiv. This work was in collaboration with Nived Chebrolu, Yifu (Ethan) Tao, and Maurice Fallon.
- Osprey: Multi-session autonomous aerial mapping with lidar-based slam and next best view planning
- Field Robotics
- Submitted, Manuscript #FR-23-0016
Aerial mapping systems are important for many surveying applications (e.g., industrial inspection or agricultural monitoring). Semi-autonomous mapping with GPS-guided aerial platforms that fly preplanned missions is already widely available but fully autonomous systems can significantly improve efficiency. Autonomously mapping complex 3D structures requires a system that performs online mapping and mission planning. This paper presents Osprey, an autonomous aerial mapping system with state-of-the-art multi-session mapping capabilities. It enables a non-expert operator to specify a bounded target area that the aerial platform can then map autonomously, over multiple flights if necessary. Field experiments with Osprey demonstrate that this system can achieve greater map coverage of large industrial sites than manual surveys with a pilot-flown aerial platform or a terrestrial laser scanner (TLS). Three sites, with a total ground coverage of 7085 m2 and a maximum height of 27 m, were mapped in separate missions using 112 minutes of autonomous flight time. True colour maps were created from images captured by Osprey using pointcloud and NeRF reconstruction methods. These maps provide useful data for structural inspection tasks.