Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Experimental demonstration of the hybrid opto-electronic correlator for target recognition

Abstract

Optical target recognition using correlators is an important technique for fast verification and identification of images. The hybrid opto-electronic correlator (HOC) recently proposed by us bypasses the need for nonlinear materials such as photorefractive polymer films by using detectors instead, and the phase information is yet conserved by the interference of plane waves with the images. In this paper, we demonstrate experimentally the basic working principle of the HOC architecture using currently available technologies. For matched reference and query images, the output signal shows a sharp peak, indicating a match is found. For an unmatched case, a much lower peak value is observed, indicating no match. We also demonstrate the dependence of the output signal on the phases of the interfering plane waves and describe a technique using an interferometer and a servo for optimizing the output signal. As such, the work reported here paves the way for further development of the HOC for practical applications.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Hybrid optoelectronic correlator architecture for shift-invariant target recognition

Mehjabin Sultana Monjur, Shih Tseng, Renu Tripathi, John James Donoghue, and M. S. Shahriar
J. Opt. Soc. Am. A 31(1) 41-47 (2014)

Demonstration of shift, scale, and rotation invariant target recognition using the hybrid opto-electronic correlator

Julian Gamboa, Mohamed Fouda, and Selim M. Shahriar
Opt. Express 27(12) 16507-16520 (2019)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved