Abstract

Active imaging systems that illuminate a scene with polarized light and acquire two images in two orthogonal polarizations yield information about the intensity contrast and the orthogonal state contrast (OSC) in the scene. Both contrasts are relevant for target detection. However, in real systems, the illumination is often spatially or temporally nonuniform. This creates artificial intensity contrasts that can lead to false alarms. We derive generalized likelihood ratio test (GLRT) detectors, for which intensity information is taken into account or not and determine the relevant expressions of the contrast in these two situations. These results are used to determine in which cases considering intensity information in addition to polarimetric information is relevant or not.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Statistical algorithms for target detection in coherent active polarimetric images

François Goudail and Philippe Réfrégier
J. Opt. Soc. Am. A 18(12) 3049-3060 (2001)

Degree of polarization estimation in the presence of nonuniform illumination and additive Gaussian noise

Arnaud Bénière, François Goudail, Mehdi Alouini, and Daniel Dolfi
J. Opt. Soc. Am. A 25(4) 919-929 (2008)

Minimization of the influence of passive-light contribution in active imaging of the degree of polarization

Arnaud Bénière, François Goudail, Mehdi Alouini, and Daniel Dolfi
Opt. Lett. 33(20) 2335-2337 (2008)

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 (6)

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

Equations (54)

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