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Proceedings Article

Ultragram: a generalized holographic stereogram

[+] Author Affiliations
Michael W. Halle, Stephen A. Benton, Michael A. Klug, John S. Underkoffler

Media Lab./MIT (USA)

Proc. SPIE 1461, Practical Holography V, 142 (July 1, 1991); doi:10.1117/12.44722
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From Conference Volume 1461

  • Practical Holography V
  • Stephen A. Benton
  • | July 01, 1991

abstract

A method for producing holographic stereograms with reduced geometrical constraints is presented. The type of holographic stereogram produced, called the ULTRAGRAM, can offer a combination of large viewing zone, arbitrary viewing distance, minimal image distortion, and high spatial resolution, depending on alterable parameters in the image processing software. Computer-based image processing techniques are used to mimic the effect of optical devices while permitting simple re-configurability. The ULTRAGRAM holographic exposure apparatus can be built with reduced attention to the final viewing geometry. An astigmatic computer graphics camera design greatly simplifies image generation. The techniques described are applicable to both one and multi-step stereograms, optical predistortion methods, and both horizontal and full-parallax systems.

© (1991) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Michael W. Halle ; Stephen A. Benton ; Michael A. Klug and John S. Underkoffler
"Ultragram: a generalized holographic stereogram", Proc. SPIE 1461, Practical Holography V, 142 (July 1, 1991); doi:10.1117/12.44722; http://dx.doi.org/10.1117/12.44722


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