Information reduction in holograms by superimposing spatial frequency bands

Satoshi Nakazaki; Kunihiro Sato; Masakazu Morimoto; Kensaku Fujii

doi:10.1117/12.473839

4 June 2003 Information reduction in holograms by superimposing spatial frequency bands

Satoshi Nakazaki, Kunihiro Sato, Masakazu Morimoto, Kensaku Fujii

Proceedings Volume 5005, Practical Holography XVII and Holographic Materials IX; (2003) https://doi.org/10.1117/12.473839
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

A new method of information reduction in hologram is described. Loss of resolution due to the information reduction is improved by superimposing spatial frequency bands of a Fourier transform hologram. Superposition of a number of identical Fourier transform holograms, which deviate each other with a small distance, forms a continuous periodic Fourier transform hologram. The second hologram for the reconstruction of an image is reproduced by repetition of a small area of the continuous periodic Fourier transform hologram. Experiments have been carried out to examine the reconstruction of 3-D images by using computer-generated holograms (CGHs). Results of the experiments show that a high-resolution image is reconstructed from the second hologram produced by superimposing spatial frequency bands. The information reduction effects on the imaging, so that the reconstructed image is spatially sampled with a constant pitch.

Citation Download Citation

Satoshi Nakazaki, Kunihiro Sato, Masakazu Morimoto, and Kensaku Fujii "Information reduction in holograms by superimposing spatial frequency bands", Proc. SPIE 5005, Practical Holography XVII and Holographic Materials IX, (4 June 2003); https://doi.org/10.1117/12.473839

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