Foldable shooting and three-dimensional live-action map building unmanned aerial vehicle

The invention discloses a foldable, shooting and three-dimensional live-action map building unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicles, and the unmanned aerial vehicle is structurally composed of a foldable device, a vehicle body upper plate, a vehicle body lower plate, a front wing arm, a rear wing, a camera, a controller, a distribution board and the like. The foldable device of the unmanned aerial vehicle adopts a motion form similar to stretching of a human arm, and the front wing arm of the unmanned aerial vehicle is retracted by 45 degrees or stretched by 180 degrees by adopting a rotation pair, so that the shaft size of the whole unmanned aerial vehicle is greatly shortened, and the problem of inconvenience in carrying and placing can be solved; the depth camera arranged at the top of the unmanned aerial vehicle can realize the functions of three-dimensional map reconstruction, loopback detection and repositioning by adopting an ORB-SLAM2 algorithm, and adop