公开(公告)号：US10896512B1

公开(公告)日：2021-01-19

申请号：US16114876

申请日：2018-08-28

申请人： Amazon Technologies, Inc.

发明人： Joseph Rutland ,  Demian Shaft Raven

IPC分类号： F01D1/00 ,  G05D1/00 ,  B64D47/08 ,  G10K11/178 ,  B64F5/60 ,  G06T7/246 ,  B64D31/06 ,  B64C39/02 ,  G08G5/00 ,  G06T7/73

摘要： An aerial vehicle outfitted with one or more cameras captures a sequence of images of a rotating propeller. The images are processed according to one or more techniques to recognize a position of the propeller, or an angle of orientation of the propeller, in each of the images. The positions or angles of the rotating propeller are used to calculate a rotational speed of the propeller, or a direction of rotation of the propeller. The cameras used to capture the images are also available for use in other applications such as navigation, monitoring or collision avoidance. The propeller may include one or more stripes, colors, characters, symbols or other markings to enhance its visibility and facilitate the determination of positions or angles of the propeller within images.