Face data-set is one the popular database, mostly used in validating non parametric as well as parametric models for computer vision applications. See more on Face recognition algorithms via the following Links:
A classic face detection method was proposed by Viola and Jones, it is basically a boosted cascade simple detectors. The use of integral images improves speed. The point is, such detector works best for the faces in frontal view, there were examples of the method being trained to side view. Your drone would have an aerial view, from above, wouldn't it?
Thanks for your answer. Obviously yes. It has an aerial view. It is better to have the detectability in aerial view since the task is to search a person and capture that particular person in a given specific area.