1. A system for acquiring and following a subject with at least one unmanned aerial vehicle (UAV) the UAV having at least one rotor configured to rotate at a rotor speed, the system comprising: at least one camera fixed to the UAV, the at least one camera configured to capture at least one image; at least one attitude control system configured to adjust a rotor speed of the at least one rotor; at least one data storage unit fixed to the UAV; a plurality of databases stored in the data storage unit, including at least a first database of at least one first image element corresponding to the subject and a second database of at least one second image element not corresponding to the subject; at least one visual recognition module coupled to the at least one camera and to the plurality of databases, the at least one visual recognition module configured to: extract at least one current image element from the at least one image; determine whether the at least one current image element is a first current image element or a second current image element; store the at least one first current image element in the first database; and store the at least one second current image element in the second database; and at least one subject tracking module coupled to the at least one visual recognition module and to the at least one attitude control system, the at least one subject tracking module configured to: define the subject by analyzing at least one reference image captured by the at least one camera; determine at least one attribute of the subject by performing at least one comparison of at least one current image element with at least one of a first image element and a second image element; and direct the attitude control system of the UAV to adjust at least one rotor speed of the UAV based on the at least one attribute; and at least one transmitter configured to transmit the at least one image via wireless link.