EVALUATION ON 3 DIMENSSIONAL IMAGE SYSTEM FROM VISUAL FUNCTION

从视觉功能的角度出发，研究了利用双眼视差对双目立体视觉系统进行评价的方法。我们测量了使用视差屏障类型的立体系统观看时的反射反应和聚散眼运动。并测量了被试在观看LED真实的靶标时的分辨反应和聚散度眼动。结果表明：（1）在立体显示和真实的目标中，调节和聚散是同时发生的，且关系密切，即调节和聚散不存在不平衡反应。(2)在立体图像显示中，调节表现出短暂的过冲和不稳定的特性。在真实的对象中，我们没有发现这些现象。(3)立体显示与真实的目标的聚散度无差异。(4)立体显示与LED真实的靶在调节量和聚散度上差异不大。(5)在双眼视差较小的情况下，重建图像的位置对应于视差和聚散度响应。从这些结果中，我们发现，我们可以用反射响应，其瞬态响应和不稳定性作为衡量立体图像的标尺。但聚散度并不是因为立体目标与真实的目标的差异很小，确切地说，我们不能从显示器的质量，如图像分辨率、视角等方面来区分显示器类型的影响。今后有必要进一步探讨形象条件和人格因素对大学生心理健康的影响。

We investigated the method to evaluate the binocular stereoscopic image systems using binocular disparity from the view point of visual function. We measured the accommodative response and vergence eye movement while viewing the stereoscopic system using parallax barrier type. And We also measured the accommodative response and vergence eye movement while viewing LED real target. The results obtained from those two experiments are :(1) The accommodation and vergence occured simultaneously with mutually closed relationship in stereoscopic display and real targets.i.e. there were no unbalance response in accommodation and vergence.(2) In stereoscopic image display, accommodation showed transient overshoot and unstable characteristics. In real target, we did not find those phenomenon.(3) There was no difference between vergence in stereoscopic display and in real target.(4) There were not large difference in amount of accommodation and vergence in the stereoscopic display and LED real target.(5) The accommodative response and vergence response were correspond to the position of reconstructed image in case of small binocular disparity. From these reults, we found the possibility that we can use accommodative response, its transient response and instability as the ruler to evaluate stereoscopic image. But vergence is not because the difference in stereoscopic and real target is small.To say exactly, we can not distinguish the influence of display type from its qualities, for example image resolution, viewing angle. In future, it is nessesary to investigate the influence of image condition and personality.