  Current motion capture (MoCap) systems generally require markers and multiple
calibrated cameras, which can be used only in constrained environments. In this
work we introduce a drone-based system for 3D human MoCap. The system only
needs an autonomously flying drone with an on-board RGB camera and is usable in
various indoor and outdoor environments. A reconstruction algorithm is
developed to recover full-body motion from the video recorded by the drone. We
argue that, besides the capability of tracking a moving subject, a flying drone
also provides fast varying viewpoints, which is beneficial for motion
reconstruction. We evaluate the accuracy of the proposed system using our new
DroCap dataset and also demonstrate its applicability for MoCap in the wild
using a consumer drone.
