Hoffman David M, Karasev Vasiliy I, Banks Martin S
University of California, Berkeley, Vision Science Program, Rm. 360 Minor, Berkeley, CA 94720 USA; telephone 510/205-3709.
J Soc Inf Disp. 2011 Mar 1;19(3):271-297. doi: 10.1889/JSID19.3.271.
Most stereoscopic displays rely on field-sequential presentation to present different images to the left and right eyes. With sequential presentation, images are delivered to each eye in alternation with dark intervals, and each eye receives its images in counter phase with the other eye. This type of presentation can exacerbate image artifacts including flicker, and the appearance of unsmooth motion. To address the flicker problem, some methods repeat images multiple times before updating to new ones. This greatly reduces flicker visibility, but makes motion appear less smooth. This paper describes an investigation of how different presentation methods affect the visibility of flicker, motion artifacts, and distortions in perceived depth. It begins with an examination of these methods in the spatio-temporal frequency domain. From this examination, it describes a series of predictions for how presentation rate, object speed, simultaneity of image delivery to the two eyes, and other properties ought to affect flicker, motion artifacts, and depth distortions, and reports a series of experiments that tested these predictions. The results confirmed essentially all of the predictions. The paper concludes with a summary and series of recommendations for the best approach to minimize these undesirable effects.
大多数立体显示器依靠场序显示向左右眼呈现不同的图像。通过顺序显示，图像在暗间隔的交替中传送到每只眼睛，并且每只眼睛与另一只眼睛以反相接收其图像。这种类型的显示会加剧包括闪烁和不平稳运动外观在内的图像伪像。为了解决闪烁问题，一些方法在更新为新图像之前多次重复图像。这大大降低了闪烁的可见性，但使运动看起来不那么平滑。本文描述了一项关于不同显示方法如何影响闪烁、运动伪像和感知深度失真的可见性的研究。它首先在时空频域中研究这些方法。通过这项研究，它描述了一系列关于显示速率、物体速度、图像同时传送到双眼以及其他属性应该如何影响闪烁、运动伪像和深度失真的预测，并报告了一系列测试这些预测的实验。结果基本上证实了所有预测。本文最后总结并给出了一系列建议，以采用最佳方法来最小化这些不良影响。
