42‐4: 360‐Degree Tabletop Type 3D Screen System Using Linear Blending of Viewing Zones and Spatially Imaged Iris Plane

Abstract

We propose a 3D screen system that provides 360‐degree smooth motion parallax. We implemented a prototype using 60 projectors, which is one fifth the number for the conventional method, and the display area has a diameter of 1,200 mm. We show the optical configuration and the visual mechanism of depth perception.

Mirror‐Transcending Aerial Imaging (MiTAi): An optical system that freely crosses the boundary between mirrored and real spaces

“…Systems for displaying digital information in real space include an autostereoscopic display, 6,7 a transparent screen, 8 and an aerial imaging system 4,9 …”

33‐2: Improving Image Quality of 360‐degree Tabletop 3D Screen System

“…In this method, many projectors at very close intervals are required to switch smoothly between video sources as the viewpoint moves. In our own previous study, we focused on the perceptual mechanism of a visual system, called "linear blending" [1,2,4,5].…”

“…In this way, the projector iris plane (the part equivalent to the iris in the projector optical system) forms in the space and the observer perceives only the projected image within that range. We previously developed a wall-mounted 3D screen system [5] and a 360-degree tabletop 3D screen system [1,2] using the principle of linear blending and the spatially imaged iris plane screen. These systems have shown that 3D images with smooth motion parallax can be presented by means of a practical configuration with a reduced number of projectors.…”

“…The projector uses LG HU80KS, which is relatively inexpensive among commercially available 4K projectors. We set the size to W165 × D165 × H474 mm, which is larger than our previous projectors [1,2], to make the device configuration space large enough to maintain an interval of six degrees. To avoid an increase in space, we propose a configuration in which the horizontal spacing is kept at six degrees by a double-stack projector array in which 12degree spaced projector arrays are shifted by six degrees (Figure 1).…”

“…In an earlier study, we focused on the perceptual mechanism of the visual system, called "linear blending", and implemented a 360-degree glasses-less tabletop 3D screen system using 60 projectors and a spatially imaged iris plane screen [1,2]. This system provides users with smooth 360-degree motion parallax in the horizontal direction while reducing the number of projectors required to about one-fifth that of the conventional method [3].…”