Hand-Eye Coordination Using a Video See-Through Augmented Reality System
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The Ergonomics Open Journal (2008)

The paper describes two experiments for investigating the influence of different levels of camera displacement on hand-eye coordination while using a video see-through head-mounted display. During the first experiment 15 camera positions with five levels of height displacement and three levels of depth displacement were compared in four different tasks. Using a two-way ANOVA the comparison of the calculated performance characteristic values showed significant influence of height displacement on hand-eye coordination. In conclusion cameras should be placed above or below eye level, but by no more than 35 mm, in order to preserve hand-eye coordination. In the second experiment, a mirror system was used to check hand-eye coordination in an exemplary medical task allowing the cameras to be placed virtually at eye level. A significant decrease in accuracy was found while using the head-mounted display compared to direct view. Finally, the mirror system was compared to the 15 camera positions using the data from the same tasks. Significant differences in performance were found between the mirror system and eye level position as well as the position slightly below eye level. The results of the experiment provide design recommendations for developers and users of video see-through systems.
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