EVALUATION ON 3 DIMENSSIONAL IMAGE SYSTEM FROM VISUAL FUNCTION

从视觉功能的角度出发，研究了利用双目视差评价双目立体图像系统的方法。在使用视差障碍型立体视觉系统时，我们测量了调节反应和会聚眼球运动。我们还测量了观看LED真实目标时的调节反应和会聚眼球运动。这两个实验的结果是：(1)立体显示和真实目标的调节和收敛是同时发生的，两者之间存在着密切的关系。在立体图像显示中，调节表现出暂时性超调和不稳定的特点。(3)立体显示的收敛与真实目标的收敛无差异。(4)立体显示与LED真实目标的调节和收敛程度没有太大差异。(5)在双眼视差较小的情况下，调节反应和收敛反应与重建图像的位置对应。从这些结果中，我们发现了用调节反应、其瞬时反应和不稳定性作为评价立体像的标尺的可能性。但收敛并不是因为立体目标与真实目标的差异很小，准确地说，我们不能区分显示类型对图像分辨率、视角等质量的影响。今后，有必要研究形象状况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.