In this paper, to realize a non-glasses type 3D display as next step from the current glasses-typed 3D display, it is
suggested that a viewing zone is designed for the 3D display using DOE (Diffusing Optical Element). Viewing zone of
proposed method is larger than that of the current parallax barrier method or lenticular method. Through proposed
method, it is shown to enable the expansion and adjustment of the area of viewing zone according to viewing distance.
In this paper, we propose an optical method for 3-D image correlator using reconstructed integral plane images. In the
proposed correlator based on integral imaging, elemental images of the reference and signal 3-D objects are recorded by
lenslet arrays and then reference and signal integral plane images are optically reconstructed on the output plane by
displaying these elemental images into a display panel. Through cross-correlations between the reconstructed reference
and the single plane images, 3-D object recognition is performed. The proposed method can provide all-optical structure
for real-time 3-D object recognition system. To show the usefulness of the proposed method, optical experiments are
carried out and the results are presented as well.
To overcome the viewing resolution limit defined by the Nyquist sampling theorem for a given lenslet pitch, a Moving
Array-Lens Technique (MALT) was developed in 3-D integral imaging technique. Even though the MALT is an
effective method for resolution improvement of Integral Imaging, this cannot be applied to a real-time 3-D integral
imaging display system because of its mechanical movement. In this paper, we propose an integral imaging display using
a computational pick-up method based on Intermediate-View Reconstruction Technique instead of optical moving pickup.
We show that the proposed system can provide optically resolution-improved 3-D images of integral imaging by use
of EIs generated by the IVRT through the optical experiments.
A floating-image display technique, which can project two-dimensional images into a real space through a convex lens
or a concave mirror, has been studied as a new approach for implementation of the next-generation three-dimensional
(3D) display system. However, the conventional floating-image display system was implemented just by using active
display devices such as LCD panel and it could provide only a real plane image in space to an observer comparing with
other 3D display systems having different perspectives. For practical application of a floating-image display system to
3D display systems, multi-layered display structure might be required to present multi-depth images in space. In this
paper, a novel floating-image display system composed of two plane images with different depth by use of a half mirror
is proposed. One plane image of an object is provided with the conventional floating-image display system to present
and the other plane image of a background is provided with the integral imaging technique. Therefore, the proposed
display system can provide high-resolution floating images with background images having different perspectives to
observers. To show the usefulness of the proposed system, some experiments are carried out and the results are presented