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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。
Too large parallax value is one of the main factors that cause stereoscopic viewing fatigue of 3D lenticular 3D display. Based on the physiological mechanism that the pupil diameter of human eye increases with the increase of stereoptic visual fatigue, a pupil diameter measuring device is set up to observe the pupil changes of the observer while viewing the stereoscopic images so as to objectively evaluate The stereoscopic viewing fatigue of the viewer and the stereoscopic viewing fatigue at different parallax sizes are obtained by combining with the viewer’s subjective evaluation. Experimental results show that when the parallax is in the range of -0.2 ° to 0.2 °, the viewer does not have obvious stereoscopic viewing fatigue, and the range can be determined as a comfortable parallax range.