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Proceedings Article

Image scaling for electroholographic display

[+] Author Affiliations
Hiroshi Yoshikawa, Kenko Sasaki

Nihon Univ. (Japan)

Proc. SPIE 2176, Practical Holography VIII, 12 (May 1, 1994); doi:10.1117/12.172630
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From Conference Volume 2176

  • Practical Holography VIII
  • Stephen A. Benton
  • San Jose, CA | February 06, 1994


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.

© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Hiroshi Yoshikawa and Kenko Sasaki
"Image scaling for electroholographic display", Proc. SPIE 2176, Practical Holography VIII, 12 (May 1, 1994); doi:10.1117/12.172630; http://dx.doi.org/10.1117/12.172630

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