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13 November 2001 Computer-generated dynamic three-dimensional display using integral photography adopting Fresnel lenses
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Integral photography, which provides continuous viewpoints and does not require any use of special glasses, is one of the most attractive methods for autostereoscopic display. To overcome the difficulties of pickup process and the pseudoscopic problem, a CGIP(Computer-Generated Integral Photography) method is desirable. In the CGIP scheme, the elemental images of imaginary objects are generated using computer instead of using pickup process. This easiness for generating elemental images makes the system compact and cost effective. For a wide viewing angle system, the f-number (the ratio of focal length to lens diameter) of the elemental lens should be small. However, the lens aberration is the penalty of the lens array with small f-number. Unlike the system using a conventional lens array, aberration occurs little in the case of adopting a well-designed Fresnel lens array which has small f-number. Fresnel lens array contributes to widen the viewing angle in the CGIP system. In addition, to increase the image depth range, dynamic integral photography is also proposed. The gap between a lens array and a display panel changes dynamically. Synchronized elemental image array for real and virtual mode is integrated in front of or behind the lens array. Therefore, observers get enhanced feeling of depth. In this way, autostereoscopic 3-D images with wide viewing angle and increased image depth can be obtained. The method can be usefully applicable to three-dimensional imaging.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Byoungho Lee, Sung-Wook Min, Sungyong Jung, and Jae-Hyeung Park "Computer-generated dynamic three-dimensional display using integral photography adopting Fresnel lenses", Proc. SPIE 4471, Algorithms and Systems for Optical Information Processing V, (13 November 2001);


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