Visual Performance in Augmented Reality Systems for Mobile Use
Marino Menozzi, Franziska Hofer, Urs N�pflin, Helmut H. A. Krueger · International Journal of Human-Computer Interaction · 2003
Users of augmented reality (AR) must direct their attention toward real world as well as artificial information. The authors investigated some aspects of interference between the 2 sources of information that affect performance in completing a visual search task. The search task was carried out under 3 different conditions, 2 of them as found in AR in mobile systems. Participants were asked to detect a target that was superimposed on a background. Target and background were presented on a screen subtending a rectangular area of 55� � 43� (horizontal � vertical). The target appeared at 6 different locations on the screen. A video recording of a car drive served as the background. In 1 condition, the recording was replayed continuously. Static images of the record were sampled at 5-sec intervals and replayed as background in another condition. A uniform gray background served as a baseline.