Department of Optometry and Vision Science, Faculty of Physics, Mathematics and Optometry, University of Latvia, Riga, Latvia.
Laboratory of Statistical Research and Data Analysis, Faculty of Physics, Mathematics and Optometry, University of Latvia, Riga, Latvia.
J Vis. 2021 Aug 2;21(8):17. doi: 10.1167/jov.21.8.17.
New visualization approaches are being actively developed aiming to mitigate the effect of vergence-accommodation conflict in stereoscopic augmented reality; however, high interindividual variability in spatial performance makes it difficult to predict user gain. To address this issue, we investigated the effects of consistent and inconsistent binocular and focus cues on perceptual matching in the stereoscopic environment of augmented reality using a head-mounted display that was driven in multifocal and single focal plane modes. Participants matched the distance of a real object with images projected at three viewing distances, concordant with the display focal planes when driven in the multifocal mode. As a result, consistency of depth cues facilitated faster perceptual judgments on spatial relations. Moreover, the individuals with mild binocular and accommodative disorders benefited from the visualization of information on the focal planes corresponding to image planes more than individuals with normal vision, which was reflected in performance accuracy. Because symptoms and complaints may be absent when the functionality of the sensorimotor system is reduced, the results indicate the need for a detailed assessment of visual functions in research on spatial performance. This study highlights that the development of a visualization system that reduces visual stress and improves user performance should be a priority for the successful implementation of augmented reality displays.
新的可视化方法正在积极开发中，旨在减轻立体增强现实中聚散冲突的影响；然而，个体间空间表现的高度可变性使得很难预测用户的收益。为了解决这个问题，我们使用头显研究了在多焦点和单焦点平面模式下，一致和不一致的双眼和焦点线索对增强现实立体环境中感知匹配的影响。参与者将真实物体的距离与在三个观看距离处投影的图像进行匹配，当以多焦点模式驱动时，与显示焦点平面一致。结果表明，深度线索的一致性有助于更快地进行空间关系的感知判断。此外，与正常视力的个体相比，患有轻度双眼和调节障碍的个体从与图像平面对应的焦点平面上的信息可视化中受益更多，这反映在性能准确性上。由于当感觉运动系统的功能降低时，可能没有症状和抱怨，因此这些结果表明需要在空间表现研究中对视觉功能进行详细评估。这项研究强调，开发一种减轻视觉压力和提高用户性能的可视化系统应该是成功实施增强现实显示器的优先事项。
