[Paper] Subjective Evaluation of Impressions Provided by Real-size Facial Expressions Presented by Light Field Display

Abstract

In this research, a subjective evaluation was conducted to compare the impressions of facial expressions presented by a light field display using the near virtual-image mode and a two-dimensional (2D) display. The goal is to investigate if a real-size three-dimensional image of a human face presented by the light field display has a larger influence on emotions and presents more lifelike face expressions than those presented by the 2D display. The impressions of using the light field display and the 2D display were compared using eight assessment criteria. The constantly changing facial emotions were exhibited on a flat-panel light field display with a screen size of 31.5 in. and a viewing-zone angle of 43.8°. The evaluation results showed that the light-field image had significantly higher evaluation values than the 2D image on the evaluation terms like "sense of affinity," "feeling like touching," "stereoscopic sensation," "fatigue," and "sense of being."