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Optical Engineering

Pattern Recognition With A Wavelength-Angle Multiplexed Optical Scanning Correlator
Author(s): T. H. Chao; M. Chen
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Paper Abstract

This paper introduces a novel approach to building a 2-D scanning optical correlator with large memory capacity for multiple-object tracking, with possible applications for telerobotic vision in the Space Station. The system consists of a tunable dye laser and a dispersive optical element such as a diffraction grating. The 2-D scanning operation is achieved by sequential tuning of the dye laser and rotation of the diffraction grating about the optical axis. The system capacity is greatly incresed by this wavelength-angle multiplexing scheme. In synthesizing the spatially multiplexed matched spatial filters, a monochromatic laser is used with a spatial carrier and scale compensation technique. Up to 1000 filters can be fabricated on a single holographic plate with a modest requirement of system space-bandwidth product. Several illustrating experimental demonstrations are presented.

Paper Details

Date Published: 1 July 1986
PDF: 6 pages
Opt. Eng. 25(7) 257828 doi: 10.1117/12.7973915
Published in: Optical Engineering Volume 25, Issue 7
Show Author Affiliations
T. H. Chao, University of Utah (United States)
M. Chen, University of Utah (United States)


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