Motion capture, motion tracking, or mocap are terms used to describe the process of recording movement of one or more objects or persons. It is used in military, entertainment, sports, and medical applications, and for validation of computer vision and robotics. In filmmaking, and games, it refers to recording actions of human actors, and using that information to animate digital character models in 2D or 3D computer animation. When it includes face and fingers or captures subtle expressions, it is often referred to as performance capture.