An Adaptive Low-cost Approach to Display Different Scenes to Multi-users for the Light Field Display

Abstract

As a promising alternative to VR head-mounted displays, current autostereoscopic displays and light field displays require high GPU consumption for multiple-view rendering and do not display different scenes for multiple viewers with motion parallax. Building upon prior work demonstrating how GPU utilization can be reduced by only rendering visible views, we propose an innovative approach to only render the visible views of different scenes towards multiple viewers' eyes. Moreover, we found that the number of visible views decreases as the viewing distances increase. Thus, a dynamic approach can be taken to adjust the number of rendered views according to viewers distance from the display. This approach can be easily adapted to the off-the-shelf light field displays to display different 3D scenes for at least two viewers according to their head positions with reduced GPU costs.

Light Field Visualization for Training and Education: A Review

“…Therefore, LFDs in high schools may enable split-domain gaming without dedicated hardware or any additional requirement. It is also possible to implement dynamic solutions via user tracking, such as the work of Pan et al [125].…”

Knowing Your Student: Targeted Teaching Decision Support Through Asymmetric Mixed Reality Collaborative Learning

“…A rendering-pressurerelief algorithm has been proposed to turn off the unneces-sary views by tracking the viewer's position [34]. Another prior work has further exploited this algorithm to allow for multi-content rendering for multiple observers by tracking multiple pairs of pupils using a webcam, which however left the potential issues of viewing-zone overlapping and even viewing-zone confusion when two observers move close or switch positions [35].…”

3D Displays: Their Evolution, Inherent Challenges & Future Perspectives

“…Their seamless motion parallax comes from rendering a large number of stereoviews at the same time, which results in considerable waste of these invisible views. Meanwhile, technically, the views of an LFD are independent of each other [29]. But the current LFDs render the same 3D contents on each of the views.…”

“…Due to the special characteristic of the LFDs, the content rendered on the display can be different in view angles [29]. So is to say, multiple users can see customized images or videos on one LFD based on their positions.…”