Versatile Framework for Low-Cost Parallax Multi-View 360° Displays

1. Overview

In this project, we introduce a new generation of multi-view 360° displays—simple, economical, and highly capable. Inspired by sci-fi “holographic” concepts yet grounded in practical design, our solution delivers high-resolution, full-color imagery viewable from any angle—no specialized eyewear required. By combining a rotating screen (smartphone) with a parallax-based technique, we achieve continuous, wrap-around visuals. We explore two prototype setups: a cylindrical dual-screen design that provides enhanced 3D-like depth, and a flat, semi-transparent version that produces striking “floating” effects.

2. Method

Our display relies on a time-multiplexed parallax strategy, using a rotating screen to unveil unique image strips from different angles. We synchronize everything with an optical sensor and wireless signals, continually correcting for drift so the visuals remain stable (Figure 1). By splitting the content into strips (Figure 2), each viewer perceives a distinct part of the image, making the display appear truly three-dimensional. This setup, combined with blending and offset techniques, ensures smooth transitions and crisp imagery no matter where you stand.

Figure1: The overall design of the rotating display consists of a display, a cylinder with a slit, a rotation platform, and a base containing a motor, an optical sensor, and a Raspberry Pi computer.

Figure2: In this figure, we present three different stages of cylinder rotation: a), b), and c). The figure illustrates how, by varying the screen content over time during cylinder rotation, we can ensure that each observer perceives distinct content.

3. How to Try It Out

You can try a simplified version at home with a single screen and no synchronization. The instructions are explained in the Action Lab YouTube video. The idea is to run the code by opening a URL on a smartphone and then rotating the smartphone inside a cylindrical enclosure.

Example URL: https://holopot360.github.io/?frequency=120&rps=3.75&mode=statue32&numViews=32

Explanation of parameters:

• frequency - The screen refresh rate of the smartphone.
• rps - The rotation speed of the table in rotations per second (use either 3.75 or 7.5).
• mode - Choose between viking32 or statue32 for the provided examples.
• numViews - The number of different views to display. This value should be a power of 2 and is limited by frequency / rps.

4. Conclusion

By blending rotating screens, precise parallax cues, and clever synchronization, we’ve shown that immersive 360° displays can be both high-resolution and budget-friendly. Our two prototypes—a cylindrical dual-screen and a see-through flat design—exhibit rich colors, stable views from any angle, and even semi-transparent effects. Future refinements could include adding more screens to reduce flicker, using lenses for greater brightness, or branching into interactive and video-based applications. From art exhibits and museum installations to conference presentations and product showrooms, our multi-view 360° display framework opens up fresh possibilities for dynamic, eye-catching experiences accessible to everyone.