Eye movement on stereoscipic space : development of the apparatus and experiments.

立体空间上的眼球运动：设备和实验的开发。

• 批准号: 10551004
• 负责人: SHIDOJI Kazunori
• 金额: $ 3.26万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10551004/
• 关键词: Virtual Reality; Eve Movement Measurement; Fixation Point; Stereoscopic image space; Convergence; Fatigue; 眼球運動; 眼球運動測定装置

1) The development of the head mounted eye movement measurement device : The device that both eyes' movements could be measured was developed to make the fatigue problem on the virtual reality environment clear. This device was attatched on the head mounted display. Both eyes' movements can be measured with this device when an actual space environment, a virtual reality environment, and a compound reality environment are being observed. In this device the measurement of fixation point was based on the center location of the pupil by the video image. Two kinds of algorithm were developed about the central location of measuring it of the pupil. The method of Haslwanter (1995) was used for the way of calculating an eye position from the pupil center position. And we developed a new calibration method to improve space accuracy.2) Experiments : The eye movements on the actual space observation and the stereoscopic image observation were measured and compared. Regardless of the actual space observation and the stereoscopic image observation, the results showed that non-dominant eye did not point to the object in some cases. The object was moved to the right and left of the horizontal, there were few differences between both observations. However, it was moved to the front and back, there were a larger differences. The convergence - divergence movement did not found in the stereoscopic image observation. This result can be interpreted that observer did not use ample depth cues on the stereoscopic image observation and this causes the fatigue on the virtual reality.

1）头戴式眼动测量装置的开发：为了明确虚拟现实环境下的疲劳问题，开发了可测量双眼运动的装置。该设备安装在头戴式显示器上。当观察实际空间环境、虚拟现实环境和复合现实环境时，可以使用该装置测量双眼的运动。在该设备中，注视点的测量是基于视频图像的瞳孔中心位置。针对测量瞳孔中心位置，开发了两种算法。根据瞳孔中心位置计算眼睛位置的方式采用Haslwanter(1995)的方法。并且我们开发了一种新的标定方法来提高空间精度。2）实验：对实际空间观察和立体图像观察时的眼球运动进行了测量和比较。无论是实际空间观察还是立体图像观察，结果都表明在某些情况下非主视眼没有指向物体。将物体移动到水平线的右侧和左侧，两次观察之间几乎没有差异。不过移到了正面和背面，差别就更大了。立体图像观察中未发现收敛-发散运动。这一结果可以解释为观察者在立体图像观察时没有使用足够的深度线索，从而导致了虚拟现实的疲劳。