DroNet: Learning to Fly by Driving (2018, methodology): “A UAV operating outdoor is usually provided with GPS, range, and visual sensors to estimate the system state, infer the presence of obstacles, and perform path planning [1], [4].”
LOAM: Lidar Odometry and Mapping in Real-time (2014, methodology): “For example, the lidar cloud can be registered by state estimation from visual odometry integrated with an IMU [15].”
Low-drift and real-time lidar odometry and mapping (2017, methodology): “For example, the lidar cloud can be registered by state estimation from visual odometry integrated with an IMU (Scherer et al. 2012).”