Abstract

Integral three-dimensional (3D) imaging provides full-motion parallax, unlike other conventional stereoscopy-based techniques. To maximize this advantage, a 3D system with a wide view along all directions is required. We propose and demonstrate a new integral imaging (InIm) method to enhance the viewing angle along both horizontal and vertical directions. Elemental lens switching is performed by a combination of spatial and time multiplexing by use of double display devices and orthogonal polarizations. Experimental results show that the viewing angle of the system is enhanced along all directions without any mechanical movement or any cross talk between afterimages. We believe that the proposed method has the potential to facilitate practical use of the wide-viewing InIm system.

© 2003 Optical Society of America

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References

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Appl. Opt. (7)

J. Opt. Soc. Am. (1)

J. Opt. Soc. Am. A (1)

J. Phys. (1)

M. Lippmann, ???Epreuves reversible donnant la sensation du relief,??? J. Phys. 7, 821-825 (1908).

Opt. Eng. (3)

F. Okano, J. Arai, H. Hoshino, and I. Yuyama, ???Three-dimensional video system based on integral photography,??? Opt. Eng. 38, 1072-1077 (1999).
[CrossRef]

S.-W. Min, S. Jung, J.-H. Park, and B. Lee, "Study for wide-viewing integral photography using an aspheric Fresnel-lens array," Opt. Eng. 41, 2572-2576 (2002).
[CrossRef]

S. Jung, J.-H. Park, B. Lee, and B. Javidi, "Viewing-angle-enhanced integral 3D imaging using double display devices with masks," Opt. Eng. 41, 2389-2390 (2002).
[CrossRef]

Opt. Express (1)

Opt. Lett. (3)

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Figures (8)

Fig. 1.
Fig. 1.

Limitation of viewing angle in InIm.

Fig. 2.
Fig. 2.

Concept of enhancing viewing angle by elemental lens switching.

Fig. 3.
Fig. 3.

Generation of the elemental images in the viewing-angle-enhanced scheme.

Fig. 4.
Fig. 4.

(a) Schematic diagram of the proposed method, (b) switched elemental lenses.

Fig. 5.
Fig. 5.

Cross-talk effect (a) in the proposed scheme and (b) in the compared case.

Fig. 6.
Fig. 6.

Image processing of elemental images obtained by pickup. (a) Classification, (b) magnification and reassembling.

Fig. 7.
Fig. 7.

Elemental image array sets for different status.

Fig. 8.
Fig. 8.

Integrated images observed from different viewpoints.

Equations (7)

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2 θ = 2 arctan ( w 2 g ) ,
E x = L m + g z g ( L m x ) ,
E y = L n + g z g ( L n y ) ,
W h 2 < E x L m < W h 2 ,
W v 2 < E y L n < W v 2 ,
W h < E x L m < W h ,
W v < E y L n < W v ,

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