亮度偏差对立体显示舒适度影响的ERP研究

ERP Study on the Effect of Brightness Deviations on Stereo Visual Comfort

立体图像的左右视图偏差是影响立体显示舒适度的重要因素,亮度偏差是重要指标之一.本文利用事件相关电位(ERP)技术并采用经典S1-S2实验范式研究了亮度偏差对立体显示舒适度的影响.ERP数据分析以时域数据统计为主,提取了N270成分的特征参量——幅值,并对不同亮度偏差等级刺激诱发的N270的幅值进行分析对比.结果发现,亮度偏差大于10%,时被试会感觉到明显的不协调,偏差等级越大,被试的不协调感越强烈.行为数据分析结果与ERP统计结果一致,建议立体图像左右视图亮度偏差应低于10%,,从而保证观看舒适度.

Differences between two viewpoints of 3D are important factors that affect viewing sense of 3DTV,ofwhich brightness deviation is an important item.Based on event-related potentials(ERP) technology and classic experimentalparadigms S1-S2,the effect of brightness distortion on viewing sense of 3,DTV is studied.Time domainstatistics analysis was carried out for ERP data,extracting the characteristic parameters of N270 component—amplitude,which was induced by different levels of brightness deviations.It is found that the participants would perceiveobvious inconsistency when brightness deviation is greater than 10%, and the inconsistency increases with thedistortion’s level.The results of ERP analysis are highly correlated with those of behavioral data,indicating thatbrightness deviation should be less than 10%, to ensure viewing comfort.