  Human drone interaction in autonomous navigation incorporates spatial
interaction tasks, including reconstructed 3D map from the drone and human
desired target position. Augmented Reality (AR) devices can be powerful
interactive tools for handling these spatial interactions. In this work, we
build an AR interface that displays the reconstructed 3D map from the drone on
physical surfaces in front of the operator. Spatial target positions can be
further set on the 3D map by intuitive head gaze and hand gesture. The AR
interface is deployed to interact with an autonomous drone to explore an
unknown environment. A user study is further conducted to evaluate the overall
interaction performance.
