The study of human health effect induced by depth information of stereo vision film

Abstract

The stereo vision results from the interaction between geometrical optics and visual psychology. Large depth will bring discomforts for the results of ghosting and°icker. The relevance of the ratio of jumping out depth (RJD) and electroencephalogram (EEG) gravity frequency (GF) was explored to re°ect human health under di®erent three-dimensional (3D) depth information (mainly the negative disparity) displayed on a three-dimensional television (3D-TV) with shutter glasses. EEG was obtained from 10 volunteers when they were watching 3D¯lm segments with di®erent negative disparities. The brain GF map shows that the depth information has a stronger in°uence on the frontal lobe than on the occipital lobe. For regression analysis, nonlinear curvē ttings of GF to RJD in Fp1, F3, O2 and T5 channels were mainly performed when RJD ranged from 0 to 3.4, while linear¯ttings were performed in some special RJD ranges. It also con¯rms that RJD above 2.2 may lead to discomfort to human body. Finally, it suggests a suitable RJD range for people to watch from the objective method. The outcomes can be used as a guidance to decrease human discomforts induced by 3D production.

Extraction and investigation of biosignal features for visual discomfort evaluation

“…The pupil size and its changes are affected by visual fatigue as well. In Wang et al (2015), showed that pupillary disorders were more frequent among a group of patients suffering from asthenopia than in a group of unaffected patients. In Murata et al (2001); Uetake et al (2000), the perceived fatigue reported by the observers, after visualization of 60 min of 2D video sequences, correlated with a reduction of the pupil diameter.…”