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Publication Title | Spinning-disc 3D Television

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Spinning-disc 3D Television

Hideaki NII∗ Kouta Minamizawa† Naoki Kawakami‡ Susumu Tachi§ The University of Tokyo

Figure 1: Image of Spinning-disc 3D Television(Left), Looking from another angle(Right)

1 Executive Summary

In this work, we have incorporated a novel LED-projection tech- nology into the simple structure of a spinning-disc television. In order to display a 3D image, we have replaced the conventionally used light bulbs with an LED array. With the aid of this technology, users can view different images from different viewing angles.

2 Project Overview

The transmission of three-dimensional (3D) images can be used to create the visual experience of people and objects at remote loca- tions sharing the same spatiotemporal space. In other words, 3D image transmission technology can eliminate the boundary between spatial and temporal domains. Our ultimate goal is to develop an image display technology that can eliminate the distance between two spaces so that users perceive the 3D presence of an object.

Toward this goal, we have previously developed TWISTER[Tanaka et al. 2002] and Seelinder[Endo et al. 2005] to realize an autostereo- scopic display without the need for wearing any special equipment. The present work extends the abovementioned prototypes toward reconstructing a more natural 3D ”presence” of objects. The first spinning-disc television system was publicly demonstrated by J. L. Baird in 1926[Tiltman 1933]. This system realized the spatial trans- mission of two-dimensional visual information. Baird was also the first to invent a stereoscopic display that employed the same method. The attractiveness of this method lies in the fact that the resulting reconstructed images are sufficiently realistic for the user to perceive the presence of an object. In this work, we have incorpo- rated a novel LED-projection technology into the classical structure of the spinning-disc television. In this system, the light rays around

∗E-mail:Hideaki Nii@ipc.i.u-tokyo.ac.jp †E-mail:kouta minamizawa@ipc.i.u-tokyo.ac.jp ‡ E-mail:kawakami@star.t.u-tokyo.ac.jp

§ E-mail:tachi@star.t.u-tokyo.ac.jp

Figure 2: Diagrammatic illustration

an object are first acquired. Each of these light rays is then pro- jected in order to reconstruct the motion parallax and the binocular stereopsis. The system can use this process to acquire, reconstruct, or even deform volumetric visual information at a remote location. The visual experience provided by this system can overcome spa- tial and temporal distances, thereby enabling the convergence of the entire on the same visual plane.

3 Vision

A spinning-disc 3D television can improve 2D image display. This system displays not only a flat image but also one that is in spatial motion without the user having to wear any special glasses. People can view the correct 3D video image from their individual viewing positions.

This system will be used for installation art work. In the future, this system might serve as the foundation for the development of 3D display systems.

Image | Spinning-disc 3D Television



spinning-disc-3d-television
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