观看3D电视中正负视差图片的脑电信号研究

采集记录志愿者在观看正负视差图片时的脑电信号,探究3D产品的相关参数。用自行搭建的测试系统,对10名志愿者用正负视差图片刺激,记录其脑电信号数据,采用独立成分分析方法(ICA)来处理其脑电信号,并用统计学的相关方法分析脑电与图片刺激之间的关系。结果表明,志愿者在分别观看正负视差的3D图片后,其脑电信号变化表出现明显不同,经分析发现,观看负视差图片时所有导联的Pα/Pβ比值比观看正视差图片时要小,且导联T4、FCz、C3、Pz具有统计学意义。观看负视差图片比正视差图片更能引起人体兴奋;Pα/Pβ的比值可以作为检测3D影像作品的一个参考指标。

Research on EEG Signals of Watching Positive and Negative Parallax Images in 3 D TV

To collect and record volunteers’ EEG when they watch positive and negative parallax images,to explore 3D product-related parameters. 10 volunteers were selected to conduct experiments with self- built test system,accepting positive and negative parallax images stimuli respectively,their EEG data were recorded. The EEG were processed with the method of independent component analysis（ ICA）,and with the method of statistical analysis to analyse the relationship between EEG and picture stimuli. The results showed that after watching positive and negative parallax 3D images,EEG of all volunteers’ changed obviously,it was found that compared with watching positive parallax images,Pα/Pβratio of all leads was smaller while watching positive parallax images,and the leads T4,FCz,C3,Pz had statistically signification. Watching negative parallax images is easier lead to excitement than the parallax images; Pα / Pβ ratio can work as a reference index to evaluate 3D product.