Abstract

A two-step algorithm for reliable recognition of a target imbedded into a two-dimensional nonuniformly illuminated and noisy scene is presented. The input scene is preprocessed with a space-domain pointwise procedure followed by an optimum correlation. The preprocessing is based on an estimate of the source illumination function, whereas the correlation filter is optimized with respect to the mean-squared-error criterion for detecting a target in the preprocessed scene. Computer simulations are provided and compared with those of various common techniques in terms of recognition performance and tolerance to nonuniform illumination as well as to additive noise. Experimental optodigital results are also provided and discussed.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Performance of an optimum receiver designed for pattern recognition with nonoverlapping target and scene noise

Bahram Javidi, Amir Fazlollahi, Peter Willett, and Philippe Réfrégier
Appl. Opt. 34(20) 3858-3868 (1995)

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
Appl. Opt. 41(32) 6867-6874 (2002)

Spectral-reflectance linear models for optical color-pattern recognition

Juan L. Nieves, Javier Hernández-Andrés, Eva Valero, and Javier Romero
Appl. Opt. 43(9) 1880-1891 (2004)

References

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
Login to access OSA Member Subscription

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 OSA member, or as an authorized user of your institution.

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

Figures (14)

You do not have subscription access to this journal. Figure files 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
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables 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
Login to access OSA Member Subscription

Equations (29)

You do not have subscription access to this journal. Equations 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
Login to access OSA Member Subscription

Metrics

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
Login to access OSA Member Subscription