A Case Study of Usability in Virtual Controls

摘要

This paper presents the results of a spatial augmented reality (SAR) feasibility study that compares interactions with seven different physical to virtual projected buttons. The virtual 3-D projected buttons in this case act like a touch screen; they are flat, provide no depth feedback when pressed, and activate on touch regardless of how much pressure is used. The study investigated whether these properties impacted on how users interacted with the buttons, and if they influenced the performance of button operation. In the experiment, 13 participants pressed physical and virtual buttons while their movements were recorded with a VICON MX20 motion tracking system. Two types of physical and virtual buttons showed similar performance results, such as how quickly the subjects reacted, or how the hand accelerated to press the button. Physical and virtual buttons were equally rated by the subjects. The study supports usage of SAR technology in Product Development.