OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 32 — Nov. 11, 2002
  • pp: 6867–6874

Optical Implementation of the Weighted Sliced Orthogonal Nonlinear Generalized Correlation for Nonuniform Illumination Conditions

Pascuala García-Martínez, Manuel Tejera, Carlos Ferreira, Daniel Lefebvre, and Henri H. Arsenault  »View Author Affiliations


Applied Optics, Vol. 41, Issue 32, pp. 6867-6874 (2002)
http://dx.doi.org/10.1364/AO.41.006867


View Full Text Article

Acrobat PDF (1291 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Optical pattern recognition under variations of illumination is an important issue. The sliced orthogonal nonlinear generalized (SONG) correlation has been proposed as an optical pattern recognition tool to discriminate with high efficiency between objects. But, at the same time, the SONG correlation is very sensitive to gray-scale image variations. In a previous work, we expanded the definition of the SONG correlation to the Weighted SONG (WSONG) correlation to modify the discrimination capability in a controlled way. Here, we propose to use the WSONG when pattern recognition is obtained by means of optical correlation under nonuniform illumination. The calculation of the WSONG correlation requires the summation of many linear correlations between binary images. To implement it optically, we use a time sequential joint transform correlator.

© 2002 Optical Society of America

OCIS Codes
(070.4550) Fourier optics and signal processing : Correlators
(070.5010) Fourier optics and signal processing : Pattern recognition
(100.4550) Image processing : Correlators
(100.5010) Image processing : Pattern recognition

Citation
Pascuala García-Martínez, Manuel Tejera, Carlos Ferreira, Daniel Lefebvre, and Henri H. Arsenault, "Optical Implementation of the Weighted Sliced Orthogonal Nonlinear Generalized Correlation for Nonuniform Illumination Conditions," Appl. Opt. 41, 6867-6874 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-32-6867

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

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

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited