An overview of depth distortion in stereoscopic 3D displays

Abstract

This article reviews how different presentation techniques of stereoscopic 3D (S3D) TVs affect depth perception. Many S3D TVs employ various interlacing techniques to present two eye views using one screen. The spatial or temporal interocular offsets introduced by these interlacing techniques can affect the image's perceived depth, resulting in depth distortion. Temporal interlacing delivers the two eye views with an interocular delay, which can be interpreted by the visual system as a horizontal disparity. Spatial interlacing presents the two eye views in alternating fashion on every other pixel row, thereby creating a vertical interocular offset, which can induce an additional horizontal disparity while the visual system performs binocular matching. Recently, novel S3D presentation techniques were introduced to improve depth perception. Spatiotemporal hybrid interlacing combines spatial interlacing and temporal interlacing: it presents the two eye views as spatial interlacing does, but each pixel row switches between the two views overtime. This hybrid technique has been proven to be free from depth distortion. By contrast, color interlacing presents the two eye views with an interocular delay, but the sign of the delay differs among the color channels. Such a configuration effectively decreases the interocular delay and improves the depth perception.

Glasses-free randot stereotest

“…Previous studies showed the difference of stereoacuity value in glasses 15 and glasses-free stereotests or focused on the difference of depth perception in various types of glasses-type 3-D display systems. 16,17 However, the exact effect of the special glasses has been remained as an unsolved problem.…”

Quantifying Visually Induced Motion Sickness (VIMS) During Stereoscopic 3D Viewing Using Temporal VIMS Rating

“…They may include conflicts in perceived self-motion (vection) between two or more sensory systems (i.e., visual-vestibular systems), 1,2 or within a single sensory system (i.e., depth/space distortion as in S3D). 3,4 In our previous study, 5 multiple wearable devices were tested to identify potential physiological markers of VIMS onset (i.e., EEG, BP, HR) induced by virtual driving in a simulator. Although some physiological changes were measured between before and after the onset of VIMS, it was difficult to conclude that the differences found were caused by the VIMS onset alone, or by the physical interactions of driving.…”