The information provided to a person's visual system by extended reality (XR) displays is not a veridical match to the information provided by the real world. Due in part to graphical limitations in XR head-mounted displays (HMDs), which vary by device, our perception of space may be altered. However, we do not yet know which properties of virtual objects rendered by HMDs -- particularly augmented reality displays -- influence our ability to understand space. In the current research, we evaluate how immersive graphics affect spatial perception across three unique XR displays: virtual reality (VR), video see-through augmented reality (VST AR), and optical see-through augmented reality (OST AR). We manipulated the geometry of the presented objects as well as the shading techniques for objects' cast shadows. Shape and shadow were selected for evaluation as they play an important role in determining where an object is in space by providing points of contact between an object and its environment -- be it real or virtual. Our results suggest that a non-photorealistic (NPR) shading technique, in this case for cast shadows, may be used to improve depth perception by enhancing perceived surface contact in XR. Further, the benefit of NPR graphics is more pronounced in AR than in VR displays. One's perception of ground contact is influenced by an object's shape, as well. However, the relationship between shape and surface contact perception is more complicated.
翻译:通过扩展现实( XR) 显示向一个人的视觉系统提供的信息,通过扩展现实( XR) 显示提供给一个人的视觉系统的信息,并不是与真实世界提供的信息相匹配的。部分由于 XR 头挂显示(HMD) 的图形限制,这些限制因设备而异,我们对空间的看法可能会被改变。然而,我们尚不知道由 HMDs 提供的虚拟物体的哪些属性 -- -- 特别是增强的现实显示 -- -- 影响我们理解空间的能力。在目前的研究中,我们评估暗淡的图形如何影响三个独特的 XR 显示的空间感知:虚拟现实(VR)、视频透视透透视现实(VST AR) 和光透透透显示增强现实(OST AR) 。我们操纵了所显示对象的几何测量以及物体投影的阴影技术。 Shape和影子被选中用于评估,因为它们通过提供对象与其环境之间的接触点,无论是真实的还是虚拟的。我们的研究结果表明, 一个非现实的图像( NPR) 阴影(NPR) 阴影(VR) 和图像(R) 接触的更深层) 的图象(VR) 可能的图像(VP) 的图像(VP) 的形状(VR) 改善。