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Optical Engineering

All-optical invariant target recognition based on intensity-to-phase coding
Author(s): Lev S. Sadovnik; Alexander Rizkin; Oleg Rashkovskiy; Alexander A. Sawchuk
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Paper Abstract

We have experimentally demonstrated the feasibility of a scale, rotation, and translation invariant all-optical processor for automatic target recognition. This simple processor consists of a single Fourier lens and uses a phase-coded input image of the target obtained by the recording of the original image onto a phase-only material through a Ronchi-type grating. A logarithmic distance measure is introduced to separate two classes of targets under the experiment. A real-time implementation of the processor is suggested utilizing a specially designed spatial light modulator.

Paper Details

Date Published: 1 February 1996
PDF: 6 pages
Opt. Eng. 35(2) doi: 10.1117/1.600899
Published in: Optical Engineering Volume 35, Issue 2
Show Author Affiliations
Lev S. Sadovnik, Physical Optics Corp. (United States)
Alexander Rizkin, Physical Optics Corp. (United States)
Oleg Rashkovskiy, Physical Optics Corp. (United States)
Alexander A. Sawchuk, Univ. of Southern California (United States)


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