Feasibility study for visual discomfort assessment on stereo images using EEG

Visual discomfort induced by inharmonious human 3D perceptions between the real world and a display is encountered most commonly in stereoscopic displays. Although various state-of-the-art 3D technologies have reduced the gaps, these delicate differences yield eye fatigue during adaptation of the human brain to artificial 3D information in displays. Therefore, the assessment of visual discomfort, either in producing or reproducing 3D content, is essential to improve viewers´ quality of experience. In this paper, we used EEG to investigate the feasibility of visual discomfort assessment on stereo images. To find features of brain-waves representing 3D visual discomfort, we designed 3D stereo image experiments and collected EEG data for several subjects. We found that spectral attenuation of alpha and beta bands over the sensorimotor area and temporal features detected 2 to 4 seconds after onset could be strong indicators of visual discomfort.