Factors Affecting the Perception of Luning in Monocular Regions of PartialBinocular Overlap Displays

摘要

Luning is a detrimental visual effect characterized by a subjective darkening ofthe visual field in the monocular regions of partial binocular overlap displays. The effect of a number of factors on the magnitude of luning was investigated. These factors include: (1) The convergent versus the divergent display modes for presenting a partial binocular overlapping field-of-view; (2) The display luminance level; (3) The placement of either black or white contours versus no (null) contours on the binocular overlap border; and (4) The increasing or decreasing of the luminance of the monocular side regions relative to the binocular overlap region. Eighteen Army student aviators served as subjects in a repeated measures design. The percentage of time luning was seen was the measure of the degree of luning. The results indicated that the divergent display mode systematically induced more luning than the convergent display model under the null contour condition. Adding black contours reduced luning in both the convergent and divergent display modes, where the convergent mode retained its relatively lower magnitude of luning. The display luminance level had no effect on luning for the null or black contour conditions.