Augmented reality (AR) technology overlays
computer-generated objects such as 2D and 3D models, texts,
pictures, and video images with physical objects, such as
specific markers, on images captured successively by a video
camera in real time [1]. Composite images with AR objects
are viewed through many kinds of computer devices such as a
head mounted display (HMD), a projector, or a computer
screen. AR applications afford a novel experience in which
the real world is enhanced through projected virtual objects
that are perceived by users as being present in the real world.
Learning applications can be made more interactive and
engaging through AR technology [2].