Lensless 2D correlation experiments

Alastair D. McAulay; Junqing Wang

doi:10.1117/12.160311

25 October 1993 Lensless 2D correlation experiments

Alastair D. McAulay, Junqing Wang

Proceedings Volume 1959, Optical Pattern Recognition IV; (1993) https://doi.org/10.1117/12.160311
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

Converging light is used for a reference beam in constructing the Fourier transform of a filter for use in a 2-D correlator. This eliminates the need for the inverse Fourier transform lens used for performing correlation. We analyze this approach and demonstrate correct performance with optical experiments. Further, we propose a compact optical correlator system that uses only one curved element for both constructing filters and performing correlation.

Citation Download Citation

Alastair D. McAulay and Junqing Wang "Lensless 2D correlation experiments", Proc. SPIE 1959, Optical Pattern Recognition IV, (25 October 1993); https://doi.org/10.1117/12.160311

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