Planning of diverse trajectories for UAV control displays

Unmanned aerial vehicles (UAVs) are more and more often used to solve different tasks in both the private and the public sector. Some of these tasks, can be often performed completely autonomously, while the others are still dependent on the remote pilots. They control an UAV using a command display where they can control it manually using joysticks, or give it a simple task. The command display allow for the planning of the UAV trajectory through the waypoints while avoiding the no-fly zones. Nevertheless, the operator can be aware of other preferences, or soft restrictions, for which it's not feasible to be inserted into the system especially during the time critical tasks. We propose to provide the operator with several alternative trajectories which are different from the operator's point of view. So he can choose the best one for the current situation. In this contribution we evaluate previously presented techniques for diverse planning. We focus on an evaluation made by a group of human operators and show how it can be deployed in an UAV control display.