Hologram bandwidth reduction and size change of 3D images for visual display

Kunihiro Sato; Satoshi Nakazaki; Masakazu Morimoto; Kensaku Fujii

doi:10.1117/12.526419

29 June 2004 Hologram bandwidth reduction and size change of 3D images for visual display

Kunihiro Sato, Satoshi Nakazaki, Masakazu Morimoto, Kensaku Fujii

Proceedings Volume 5290, Practical Holography XVIII: Materials and Applications; (2004) https://doi.org/10.1117/12.526419
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

A method of hologram bandwidth reduction and a method of size change of a 3D image are described. Spatial frequency bands of a Fourier-transform hologram (FTH) are superimposed for reduction of the bandwidth and for production of a continuous periodic FTH. Resolution of the image is improved by the superimposing method. The second hologram for reconstruction of the magnified 3D image is produced by connecting a number of small holograms clipped from the original FTH. Image depth capable of magnification is extended using several FTHs. Experiments using the CGH shows that depth of the 3D image can be perceived by watching images reconstructed on many Fouriertransform planes with different distances from the hologram. It is also shown that numbers of rays of light illuminated from the second hologram reconstruct similar 3D images of various sizes of the same object. Distortion of the image due to the magnification can be avoided over the wide range of magnifying power.

Citation Download Citation

Kunihiro Sato, Satoshi Nakazaki, Masakazu Morimoto, and Kensaku Fujii "Hologram bandwidth reduction and size change of 3D images for visual display", Proc. SPIE 5290, Practical Holography XVIII: Materials and Applications, (29 June 2004); https://doi.org/10.1117/12.526419

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KEYWORDS

Holograms

3D image reconstruction

3D image processing

Visualization

Image resolution

Distortion

3D displays

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