暗环境下3D显示亮度对视觉疲劳的影响研究Research on the effect of luminance on visual fatigue in 3D display mode under a dark background
孙贵磊,杨雨昕,冉令华,张少君,刘倩
摘要(Abstract):
为研究不同亮度下3D显示方式对视觉疲劳的影响规律,在固定视距下,以58.24 cd/m~2、101.15 cd/m~2和119.17 cd/m~2作为低、中、高3种试验亮度,邀请30名被试者在暗环境下观看3D视频90 min,每15 min采用问卷调查及校对作业对被试者进行主观疲劳测试,同时,采用闪光融合频率计及Tobii Glasses眼动仪分别测量被试人员的闪光融合临界频率(CFF)与瞳孔直径两个指标,对被试者疲劳状态进行表征,通过SPSS 25.0分析不同亮度下视觉疲劳之间的差异性及随时间增长视觉疲劳的变化规律。结果表明:在0.05的显著性水平下,被试人员的基线数据之间没有显著差异,而当观看时间在45 min以内时,101.15 cd/m~2的中亮度所致疲劳程度最低,为3种亮度中的最适亮度;若观看时间超过45 min,中亮度所致的疲劳程度逐渐上升,低亮度所致的疲劳程度会逐渐下降,60 min时,被试者在低亮度下的累积疲劳程度最低,而且随时间延长,亮度越高,视觉疲劳程度越严重;视觉疲劳的主观感受滞后于CFF的客观测试数据。Logistic分析结果显示,瞳孔直径和CFF可用于快速评估受试者的视觉疲劳,准确率为94.0%,由此可以通过客观指标测试对视觉疲劳进行预防。
关键词(KeyWords): 安全人体学;3D显示;视觉疲劳;亮度差异;闪光融合临界频率;瞳孔直径
基金项目(Foundation): 中国劳动关系学院一般项目(22XYJS006);; 国家重点研发计划项目(2017YFF0206604);; 立体显示工效学测试项目(307-2018-06)
作者(Author): 孙贵磊,杨雨昕,冉令华,张少君,刘倩
DOI: 10.13637/j.issn.1009-6094.2021.0846
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