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Applied Optics

Applied Optics


  • Vol. 27, Iss. 23 — Dec. 1, 1988
  • pp: 4977–4984

Optical projection correlations

David P. Casasent and Jung-Hee Song  »View Author Affiliations

Applied Optics, Vol. 27, Issue 23, pp. 4977-4984 (1988)

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The correlation of several 1-D projections of a 2-D image are considered for pattern recognition. A theoretical analysis and SNR comparison to 2-D correlations are provided with successful simulated results that show that the use of two or three 1-D correlations can identify and discriminate the 26 characters in the alphabet. Several possible 1-D optical correlators to implement projection correlations are described.

© 1988 Optical Society of America

Original Manuscript: April 12, 1988
Published: December 1, 1988

David P. Casasent and Jung-Hee Song, "Optical projection correlations," Appl. Opt. 27, 4977-4984 (1988)

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  1. D. Casasent, W. T. Chang, “Correlation Synthetic Discriminant Functions,” Appl. Opt. 25, 2343 (1986). [CrossRef] [PubMed]
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