Image scaling for electroholographic display

Hiroshi Yoshikawa; Kenko Sasaki

doi:10.1117/12.172630

1 May 1994 Image scaling for electroholographic display

Hiroshi Yoshikawa, Kenko Sasaki

Proceedings Volume 2176, Practical Holography VIII; (1994) https://doi.org/10.1117/12.172630
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

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.

Citation Download Citation

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

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