I. INTRODUCTION
Recently, vocational training systems, wherein task
prompts are displayed in the form of augmented reality (AR),
have been studied; AR is a technology for a live, direct, or
indirect view of a physical, real-world environment whose
elements are augmented by computer-generated sensory input,
such as sound and graphics [1, 2]. AR functions by enhancing
a person’s current perception of reality. By contrast, virtual
reality (VR) replaces the real world with a simulated one. The
capabilities of AR can be leveraged using a webcam to add
information and meaning to a real object for task prompting
under rehabilitation settings. With AR, the users need not have
to match picture cues with realities, a prompting strategy
employed in numerous studies.