Pattern Recognition With A Wavelength-Angle Multiplexed Optical Scanning Correlator

T. H. Chao; M. Chen

doi:10.1117/12.7973915

1 July 1986 Pattern Recognition With A Wavelength-Angle Multiplexed Optical Scanning Correlator

T. H. Chao, M. Chen

Author Affiliations +

Optical Engineering, Vol. 25, Issue 7, 257828 (July 1986). https://doi.org/10.1117/12.7973915

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.

Citation Download Citation

T. H. Chao and M. Chen "Pattern Recognition With A Wavelength-Angle Multiplexed Optical Scanning Correlator," Optical Engineering 25(7), 257828 (1 July 1986). https://doi.org/10.1117/12.7973915

Published: 1 July 1986

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