3D电视图片视差引发的EEG和VEP变化的研究

发布时间：2018-01-08 06:35

  本文关键词：3D电视图片视差引发的EEG和VEP变化的研究　出处：《中国生物医学工程学报》2015年06期 　论文类型：期刊论文

  更多相关文章： D电视 视差 视觉诱发电位 疲劳因子R值

【摘要】：采集志愿者观看3D电视不同视差图片时的脑电信号,分析其在观看过程中产生的视觉诱发电位,计算各波段功率得到视觉疲劳因子R值,以此来探究3D影片中视差因素对人体健康的影响,为3D片源的制作提供一定的指标参考。基于Neuroscan脑电仪搭建实验系统,选取10名健康志愿者观看不同视差的3D图片,采集脑电信号的同时当其感觉不适时(刺痛感或者眩晕感)通过按键反馈。对采集的脑电信号中枕部视觉功能区的O1、O_z、O_2等3个导联的数据采取叠加平均的方法提取其视觉诱发电位(VEP),得到N_(135)成分波和P_(260)成分波;将预处理后的脑电信号依照相同的图片刺激序号进行叠加,将结果用Matlab的EEG工具包进行相对功率计算,进一步得到疲劳因子R值。结果表明,不同视差图片诱发的VEP的电位幅值和潜伏期有所差异,潜伏期的差异尤为明显(不同分组的均值变化为30%);志愿者观看只有负视差的3D图片时疲劳因子R值较大,即所有导联的均值比其他分组图片高10%。P_(260)成分的幅值和潜伏期可以作为评价3D片源的一个参考指标;负视差的图片更容易引起人眼的疲劳;正负视差都有的图片引起的疲劳度等级最低。
[Abstract]:The EEG signals of volunteers watching different parallax images of 3D TV were collected, and the visual evoked potential (VEP) produced during viewing was analyzed, and the visual fatigue factor R value was obtained by calculating the power of each band. In order to explore the effect of parallax factors on human health in 3D film, provide a certain index reference for making 3D film source. The experiment system is built based on Neuroscan EEG instrument. Ten healthy volunteers were selected to view 3D images of different parallax. At the same time, when the EEG signal is not timely (tingling or dizziness) through keystroke feedback. The occipital visual functional area of the collected EEG O1OZ. The data of three leads, O _ 2 and so on, were extracted by superposition average method to get the component wave of NSP 135 and the component wave of PSP 260). The preprocessed EEG signal was superposed according to the same image stimulus sequence, and the relative power was calculated with Matlab's EEG Toolkit, and the fatigue factor R value was further obtained. The amplitude and latency of VEP induced by different parallax images were different, especially the latency (the mean value of different groups was 30%). When the volunteers viewed 3D images with only negative parallax, the R value of fatigue factor was higher. That is, the average value of all leads is 10% higher than that of other subgroup pictures. The amplitude and latency of the components can be used as a reference index for evaluating 3D source. Negative parallax images are more likely to cause human eye fatigue; Both positive and negative parallax images have the lowest fatigue level.
【作者单位】： 南京航空航天大学自动化学院;
【基金】：科技部十二五国家科技支撑计划(2012BAI23B07) 国家自然科学基金(61171059) 江苏省研究生培养创新工程(KYLX_0248)
【分类号】：R741.044;TN911.7
【正文快照】： 引言随着观看3D电影的热潮席卷全球,3D电视也开始进入寻常百姓人家中。尽管3D电视在真实感和立体感等方面给我们带来愉悦,但观看之后容易产生视觉疲劳等弊端也逐渐显现[1],眼干涩、酸痛、发痒等不良反应尤为明显[2]。因此,通过客观的技术手段为厂商提供安全的3D片源相关的指标，

本文编号：1396056