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Proceedings Paper

Image scaling for electroholographic display
Author(s): Hiroshi Yoshikawa; Kenko Sasaki
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Paper Abstract

A 2D image can be scaled simply by changing its pixel size. If we were to apply this model to a hologram, it would cause distortion in the reconstructed 3D images, and a change in the viewing angle. We propose a method for scaling the reconstruction image without changing its fringe element, i.e., pixel size. We divide the hologram into small blocks. Then, these blocks are repositioned in order to magnify or demagnify the reconstructed image. This method maintains the viewing angle and causes no distortion. It does, however, blur the reconstructed image. To reduce the blur, we propose a method of interpolation in the frequency domain. Results of experiments performed on an electro-holography system are also presented.

Paper Details

Date Published: 1 May 1994
PDF: 11 pages
Proc. SPIE 2176, Practical Holography VIII, (1 May 1994); doi: 10.1117/12.172630
Show Author Affiliations
Hiroshi Yoshikawa, Nihon Univ. (Japan)
Kenko Sasaki, Nihon Univ. (Japan)

Published in SPIE Proceedings Vol. 2176:
Practical Holography VIII
Stephen A. Benton, Editor(s)

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