Visual Discomfort with Stereo 3D Displays when the Head is Not Upright.
Visual Discomfort with Stereo 3D Displays when the Head is Not Upright.
复制标题
DOI：
10.1117/12.912204
复制
发表时间：
2012-02-09
期刊：
影响因子：
--
通讯作者：
Banks MS
中科院分区：
文献类型：
--
作者：
Kane D;Held RT;Banks MS
正确构造的立体图像在显示屏上垂直对齐，因此屏幕上的双眼视差是严格水平的。如果观看者的眼间轴也是水平的，则他/她进行水平聚散眼球运动以融合立体图像。然而，如果观看者的头部侧转，屏幕上的视差现在在眼睛处具有水平和垂直分量。因此，观看者必须进行水平和垂直聚散运动以双眼融合两个图像。垂直的聚散运动自然发生，但它们通常很小。当头部旋转到侧面观看立体图像时，需要更大的运动。我们问是否垂直聚散眼睛运动所需的融合立体图像时，头部滚动引起视觉不适。我们还询问了头部滚动是否会损害看到立体深度的能力。为了回答这些问题，我们进行了行为实验，在实验中，我们通过顺时针或逆时针旋转立体显示器来模拟头部滚动，同时观看者的头部相对于重力保持直立。在观看刺激物的同时，受试者执行心理物理任务。视觉不适显着增加的刺激卷的数量和屏幕上的水平视差的大小。感知立体深度的能力也随着滚动和屏幕上的视差的增加而下降。这两种效应的大小与诱导的垂直视差的大小成比例。我们的结论是，头部滚动是一个显着的原因，观众的不适，它也会对立体显示器的深度感知产生不利影响。
Properly constructed stereoscopic images are aligned vertically on the display screen, so on-screen binocular disparities are strictly horizontal. If the viewer’s inter-ocular axis is also horizontal, he/she makes horizontal vergence eye movements to fuse the stereoscopic image. However, if the viewer’s head is rolled to the side, the on-screen disparities now have horizontal and vertical components at the eyes. Thus, the viewer must make horizontal and vertical vergence movements to binocularly fuse the two images. Vertical vergence movements occur naturally, but they are usually quite small. Much larger movements are required when viewing stereoscopic images with the head rotated to the side. We asked whether the vertical vergence eye movements required to fuse stereoscopic images when the head is rolled cause visual discomfort. We also asked whether the ability to see stereoscopic depth is compromised with head roll. To answer these questions, we conducted behavioral experiments in which we simulated head roll by rotating the stereo display clockwise or counter-clockwise while the viewer’s head remained upright relative to gravity. While viewing the stimulus, subjects performed a psychophysical task. Visual discomfort increased significantly with the amount of stimulus roll and with the magnitude of on-screen horizontal disparity. The ability to perceive stereoscopic depth also declined with increasing roll and on-screen disparity. The magnitude of both effects was proportional to the magnitude of the induced vertical disparity. We conclude that head roll is a significant cause of viewer discomfort and that it also adversely affects the perception of depth from stereoscopic displays.
登录
查看更多内容
影响因子：
1.8
作者：
KRISHNAN, VV;PHILLIPS, S;STARK, L
通讯作者：
STARK, L
影响因子：
--
作者：
Pelli, DG
通讯作者：
Pelli, DG
影响因子：
2
作者：
Howard, IP;Allison, RS;Zacher, JE
通讯作者：
Zacher, JE
影响因子：
1.4
作者：
HOUTMAN, WA;ROZE, JH;SCHEPER, W
通讯作者：
SCHEPER, W
影响因子：
1.7
作者：
Palmisano, S
通讯作者：
Palmisano, S