Steinicke Frank, Bruder Gerd, Hinrichs Klaus, Willemsen Pete
IEEE Trans Vis Comput Graph. 2011 Sep;17(9):1223-33. doi: 10.1109/TVCG.2011.41. Epub 2011 Feb 10.
In visual perception, change blindness describes the phenomenon that persons viewing a visual scene may apparently fail to detect significant changes in that scene. These phenomena have been observed in both computer-generated imagery and real-world scenes. Several studies have demonstrated that change blindness effects occur primarily during visual disruptions such as blinks or saccadic eye movements. However, until now the influence of stereoscopic vision on change blindness has not been studied thoroughly in the context of visual perception research. In this paper, we introduce change blindness techniques for stereoscopic virtual reality (VR) systems, providing the ability to substantially modify a virtual scene in a manner that is difficult for observers to perceive. We evaluate techniques for semiimmersive VR systems, i.e., a passive and active stereoscopic projection system as well as an immersive VR system, i.e., a head-mounted display, and compare the results to those of monoscopic viewing conditions. For stereoscopic viewing conditions, we found that change blindness phenomena occur with the same magnitude as in monoscopic viewing conditions. Furthermore, we have evaluated the potential of the presented techniques for allowing abrupt, and yet significant, changes of a stereoscopically displayed virtual reality environment.
在视觉感知中，变化盲视描述了这样一种现象：观看视觉场景的人可能明显无法察觉到该场景中的显著变化。这些现象在计算机生成的图像和现实世界场景中均有观察到。多项研究表明，变化盲视效应主要发生在视觉干扰期间，如眨眼或眼球的扫视运动。然而，到目前为止，在视觉感知研究的背景下，立体视觉对变化盲视的影响尚未得到充分研究。在本文中，我们介绍了用于立体虚拟现实（VR）系统的变化盲视技术，它能够以观察者难以察觉的方式对虚拟场景进行实质性修改。我们评估了半沉浸式VR系统的技术，即被动和主动立体投影系统，以及沉浸式VR系统，即头戴式显示器，并将结果与单目观看条件下的结果进行比较。对于立体观看条件，我们发现变化盲视现象的发生程度与单目观看条件相同。此外，我们还评估了所提出的技术在允许立体显示的虚拟现实环境发生突然但显著变化方面的潜力。
