PT Unknown AU Müller, K Trommer, GF TI Real-Time Image Matching and Tracking for Autonomous Quadrotor Helicopters SE 26th Saint Petersburg International Conference on Integrated Navigation Systems (ICINS): Proceedings, 27-29 May 2019, Saint Petersburg, Russia PY 2019 DI 10.23919/ICINS.2019.8769431 LA english PI Sankt Petersburg, Russland ER