TITLE:
Comfort in observing stereoscopic images reduced by vibration stimuli
AUTHORS:
Hiroshi Watanabe, Hiroyasu Ujike
KEYWORDS:
3D Movie; Vibration Stimuli; Visual Fatigue; Heart Rate Variability; Subjective Comfort Evaluation
JOURNAL NAME:
Health,
Vol.4 No.11,
November
16,
2012
ABSTRACT: Numerous studies have been conducted to illuminate the effect of image factors to reduce unexpected influence of stereoscopic images on healthy visual experience. In this paper, we introduce changes in the psychological and physiological indexes of observers of a stereo- scopic image disturbed by vibration stimuli. Forty-four healthy university students participated in the experiment. A programmable vibration table generated two types of vibrations (5 Hz and 20 Hz) and provided intermittent vibration stimuli to a stereoscopic projector installed on a vibration table. Our results showed that the frequency of vibration stimuli has a strong impact in evaluating the local comfort of subjects. Our results also showed that the indexes of visual fatigue increased after observation independent of the frequency. The activity status of the autonomic nervous system as a physiological index significantly increased after observing 3D images with vibration stimuli although the vibrational frequency did not have a significant effect on the activity status.