柱透镜光栅3D显示器的视差范围与立体观看视疲劳的关系

过大的视差取值是产生柱透镜光栅3D显示器立体观看视疲劳的主要因素之一。基于人眼瞳孔直径随着立体观看视疲劳程度的增加而递增这一生理机理,本文建立了一个瞳孔直径的测量装置,可在观看者观看立体图像的同时记录观看者的瞳孔变化,从而客观评价观看者的立体观看视疲劳程度,并通过与观看者的主观评价相结合,得出不同视差大小下的立体观看视疲劳程度。实验结果表明,当视差在-0.2°～0.2°范围内时,观看者没有明显的立体观看视疲劳,可将该范围确定为观看舒适的视差范围。

Research on relation between the range of binocular parallax and visual fatigue in 3D display based on lenticulation lens

In the three-dimensional(3D) display based on lenticular lens,large binocular parallax is one of the major factors of visual fatigue caused by viewing stereoscopic images.As the degree of visual fatigue increases with the pupil diameter,a pupil diameter measuring device is set up to record the viewer′s pupil diameter which can be used to evaluate visual fatigue objectively when the viewers view stereoscopic images.Through the combination of subjective evaluation and objective evaluation,the visual fatigue degrees in different ranges of binocular parallax are measured.The experimental results show that the observers do not have obvious visual fatigue when the range of binocular parallax is from-0.2° to 0.2°.This range can be considered as a critical range of visual comfort.