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Proceedings Paper

Scale-, translation-, and rotation-invariant all-optical processor based on intensity-to-phase coding
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Paper Abstract

To our knowledge, the proposed concept is the first non-holographic all optical implementation of an invariant processor. Unlike most of the proposed invariance schemes, our processor works with gray level images, not just binary ones. This follows from the intensity transformation formalized in Eq. (6). Not only the shape of the object but also its intensity distribution can be analyzed for object identification. Nonlinear optical processing is the key element of our scheme.

Paper Details

Date Published: 25 October 1993
PDF: 12 pages
Proc. SPIE 1959, Optical Pattern Recognition IV, (25 October 1993); doi: 10.1117/12.160299
Show Author Affiliations
Lev S. Sadovnik, Physical Optics Corp. (United States)
Alexander A. Sawchuk, Univ. of Southern California (United States)
Thomas Taiwei Lu, Photonics Research (United States)
Andrew A. Kostrzewski, Physical Optics Corp. (United States)

Published in SPIE Proceedings Vol. 1959:
Optical Pattern Recognition IV
David P. Casasent, Editor(s)

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