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

作　　者：孙贵磊 杨雨昕 冉令华[2] 张少君 刘倩 SUN Gui-lei;YANG Yu-xin;RAN Ling-hua;ZHANG Shao-jun;LIU Qian(School of Safety Engineering,China University of Labor Relation;China National Institute of Standardization;China Standard Certification Co.,Ltd.;Beijing Academy of Emergency Management Science and Technology)

机构地区：[1]中国劳动关系学院安全工程学院,北京100048 [2]中国标准化研究院,北京100191 [3]中标能效科技(北京)有限公司,北京100088 [4]北京市应急管理科学技术研究院,北京101101

出　　处：《安全与环境学报》2022年第3期1399-1405,共7页Journal of Safety and Environment

基　　金：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)。

摘　　要：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。To study the effect of 3 D display mode on visual fatigue under different luminance,the values of 58.24 cd/m^(2),101.15 cd/m^(2),and 119.17 cd/m^(2) were used as low,medium,and high luminance for the experiment at fixed sight distance.30 testees were invited to watch 3 D science fiction videos for 90 minutes in a dark environment under different experimental luminance.Subjective visual fatigue was tested by questionnaire survey and proofreading work every 15 minutes.Besides,a flicker frequency fusion meter and Tobii glasses were used to measure the testees’critical flicker fusion(CFF)and pupil diameter to characterize the objective parameters of subjects’fatigue state.SPSS 25.0 was used to analyze the differences of the visual fatigue under three luminance and the rule of visual fatigue changes with the increase of viewing time.The results indicate that under the significance level of 0.05,there is no significant difference among the baseline data.When the viewing time is less than 45 min,the best luminance among the three kinds of luminance is 101.15 cd/m^(2) which can result in the least visual fatigue;while the fatigue degree caused by medium brightness increases gradually,and the fatigue degree caused by low brightness decreases gradually.At 60 min,the cumulative fatigue degree of subjects under low brightness is the lowest.The brightness and the visual fatigue degree increase over time.The subjective perception of visual fatigue lags the objective test data of CFF value.The binary logistic algorithm based on the K-Means clustering algorithm was used to predict the fatigue of the testees.The prediction results show that the pupil diameter and CFF value can be used to quickly assess the testees’visual fatigue with an accuracy rate of 94.0%.Therefore,subjective visual fatigue can be avoided before it appears through objective parameters.

关 键 词：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 

分 类 号：X914[环境科学与工程—安全科学]