Effectiveness of Peripheral Level of Detail Degradation When Used with Head-Mounted Displays
Watson, Benjamin A. (Benjamin Allen)
Hodges, Larry F.
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Two user studies were performed to evaluate the effectiveness of level of detail (LOD) degradation in the periphery of head-mounted displays. In the first study, spatial detail was degraded by reducing resolution. In the second study, detail was degraded in the color domain by using grayscale in the periphery. In each study, ten subjects were given a complex search task that required users to indicate whether or not a target object was present among distractors. Subjects used several different displays varying in the amount of detail presented. Frame rate, object location, subject input method, and order of display use were all controlled. Primary dependent measures were search time on correctly performed trials, and the percentage of all trials correctly performed. Results indicated that peripheral LOD degradation can be used to reduce visual complexity by almost half without hurting performance. Users were more sensitive to decreases in LOD than increases in degraded display area.