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Proceedings Paper

Focus-distance-controlled 3D TV
Author(s): Nobuaki Yanagisawa; Kyung-tae Kim; Jung-Young Son; Tatsuya Murata; Takatoshi Orima
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Paper Abstract

There is a phenomenon that a 3D image appears in proportion to a focus distance when something is watched through a convex lens. An adjustable focus lens which can control the focus distance of the convex lens is contrived and applied to 3D TV. We can watch 3D TV without eyeglasses. The 3D TV image meets the NTSC standard. A parallax data and a focus data about the image can be accommodated at the same time. A continuous image method realizes much wider views. An anti 3D image effect can be avoided by using this method. At present, an analysis of proto-type lens and experiment are being carried out. As a result, a phantom effect and a viewing area can be improved. It is possible to watch the 3D TV at any distance. Distance data are triangulated by two cameras. A plan of AVI proto type using ten thousands lenses is discussed. This method is compared with four major conventional methods. As a result, it is revealed that this method can make the efficient use of integral photography and varifocal type method. In the case of integral photography, a miniaturization of this system is possible. But it is difficult to get actual focus. In the case of varifocal type method, there is no problem with focusing, but the miniaturization is impossible. The theory investigated in this paper makes it possible to solve these problems.

Paper Details

Date Published: 15 May 1997
PDF: 6 pages
Proc. SPIE 3012, Stereoscopic Displays and Virtual Reality Systems IV, (15 May 1997); doi: 10.1117/12.274466
Show Author Affiliations
Nobuaki Yanagisawa, Toyo Univ. (Japan)
Kyung-tae Kim, Hannam Univ. (South Korea)
Jung-Young Son, Korea Institute of Science and Technology (South Korea)
Tatsuya Murata, Toyo Univ. (Japan)
Takatoshi Orima, Toyo Univ. (Japan)

Published in SPIE Proceedings Vol. 3012:
Stereoscopic Displays and Virtual Reality Systems IV
Scott S. Fisher; John O. Merritt; Mark T. Bolas, Editor(s)

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