High-speed and Low-Latency Ocular Parallax Rendering Improves Binocular Fusion in Stereoscopic Vision

Abstract

Most of the current virtual/augmented reality (VR/AR) displays use binocular parallax to present 3D images. However, they do not consider ocular parallax, which refers to the slight movement of the viewpoint with eye rotation, such as saccade. A commercial head-mounted display (HMD) has a large latency in realizing ocular parallax rendering. In our study, a high-speed (1,000 fps) and low-latency (average 4.072 ms) ocular-parallax-rendering device was assembled, and its effect was examined wherein a reasonable approximation algorithm for viewpoint was applied. A user study experiment employing a random dot stereogram (RDS) showed improvements in binocular fusion, the causes of which are comprehensively discussed.