Ultragram: a generalized holographic stereogram

Michael W. Halle; Stephen A. Benton; Michael A. Klug; John S. Underkoffler

doi:10.1117/12.44722

1 July 1991 Ultragram: a generalized holographic stereogram

Michael W. Halle, Stephen A. Benton, Michael A. Klug, John S. Underkoffler

Proceedings Volume 1461, Practical Holography V; (1991) https://doi.org/10.1117/12.44722
Event: Electronic Imaging '91, 1991, San Jose, CA, United States

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.

Citation Download 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, (1 July 1991); https://doi.org/10.1117/12.44722

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