We propose three-dimensional floating display which uses a concave cylindrical mirror (CCM), wedge prisms, and a
digital micro-mirror device (DMD). Wedge prisms can make the direction of projected images tilt by a specific angle
from the incident direction. In our system, wedge prisms are rotated to project images to whole direction of the
cylindrical mirror. Projected images from the DMD projector are reflected and distorted by the CCM simultaneously. We
generate inversely distorted images to correct the image distortions to display original images. As the wedge prisms
rotate, the tilt angle in the longitudinal plane of the CCM rotates. This means that images from the DMD can be
projected in any horizontal direction. Viewers can see 3D objects with horizontal parallax in any horizontal direction.
The further explanation of the proposed system is provided, and the experimental results are also presented.
Computational reacquisition for real 3D object in integral imaging is proposed. The pseudoscopic problem and matching
of lens array in pickup and display are fundamental problems for real-time broadcasting based on integral imaging. We
propose the reconstruction method of real 3D object and computational reacquisition method without matching of pickup
and display lens array. In reconstruction, the real 3D object is reconstructed with volumetric information using depth
extraction and triangular mesh, which can be rotated and translated in orthoscopic geometry. In reacquisition, the virtual
lens array can generate the elemental image without matching of pickup lens array using OpenGL.
The amount of information for 3D display is much bigger than that for 2D display. Therefore, many researches about 3D
display have used multiplexing of conventional display devices sequentially or spatially. We propose a new 3D display
system using a concave cylindrical mirror and tracking technology. The concave cylindrical mirror can be used like a
convex lens in the polar axis. It means that the concave cylindrical mirror can float an image from a 2D display panel
and give directional images to a viewer in the optical axis. To give the parallax to the viewer, the tracking technology
will be used to generate the images according to the position of the viewer. We design a structure with a cylindrical
reflective film and a 2D display panel. And, we use the tracking technology to provide parallax which cannot be made in
the cylindrical reflective film. Further explanations of the proposed structure and experimental results will be presented.
In this paper, a high-definition integral floating display is implemented. Integral floating display is composed of an
integral imaging system and a floating lens. The integral imaging system consists of a two-dimensional (2D) display and
a lens array. In this paper, we substituted multiple spatial light modulators (SLMs) for a 2D display to acquire higher definition. Unlike conventional integral floating display, there is space between displaying regions of SLMs. Therefore, SLMs should be carefully aligned to provide continuous viewing region and seamless image. The implementation of the system is explained and three-dimensional (3D) image displayed by the system is represented.
In this paper, we propose a color moire pattern reduction method in integral three-dimensional imaging by slanting the lens array. The color moire patterns are examined as varying the slanted angles between the lens array and the display panel for choosing the angles for which the pattern is reduced. However, it is difficult to expect the tendency of the pattern. We simulate the color moire pattern on the assumption of ray optics and find out the angle where the moiré is reduced. With the proposed technique clear three dimensional images can be displayed. The explanation of the proposed method will be provided, and the simulation results will be shown. Finally, experimental results will verify the proposed method.