Recent Progress in Three-Dimensional Display Systems

Abstract

This paper describes recent advances in three-dimensional display systems. Some of the problems facing stereoscopic display are pointed out from the aspect of human visual perception. The main problems include visual fatigue arising from the conflict between vergence and accommodation, and the lack of motion parallax stemming from the display of only right and left images. It is observed that the flipping caused by use of the uncontinuous image display method persists even after using multiview stereoscopic images. Also described are recent developments in three-dimensional display systems that can eliminate imperfections in stereoscopic display. The possibility of using these systems to eliminate visual fatigue and flipping is examined on the basis of the experimental results obtained. Further, the common principle underlying these displays is explained by taking into account the basic method of light field reproduction. Finally, three-dimensional displays are introduced. These three-dimensional displays are designed based on each intend purpose, and also selected how to use both horizontal and vertical disparities or only horizontal disparity. The first is a cubic-type display that can be moved by hand and can display horizontal and vertical disparities in a manner similar to that of integral photography. The second is a tabletop-type display that can display only horizontal disparity, without flipping. The third is a large-screen three-dimensional display that only uses horizontal disparity to maintain high picture quality.