Abstract

We introduce a method based on an orthonormal vector space basis representation to detect camouflaged targets in natural environments. The method is intensity invariant so that camouflaged targets are detected independently of the illumination conditions. The detection technique does not require one to know the exact camouflage pattern, but only the class of patterns (e.g., foliage, netting, woods). We use nonlinear filtering and the calculation of several correlations. The nonlinearity of the filtering process also allows high discrimination against false targets. Several experiments confirm the target detectability where strong camouflage might delude even human viewers.

© 2005 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Three-dimensional object detection under arbitrary lighting conditions

José J. Vallés, Javier García, Pascuala García-Martínez, and Henri H. Arsenault
Appl. Opt. 45(21) 5237-5247 (2006)

Phase Fourier vector model for scale invariant three-dimensional image detection

José J. Vallés, Pascuala García-Martínez, Javier García, and Carlos Ferreira
Opt. Express 15(12) 7818-7825 (2007)

Nonlinear filter for pattern recognition invariant to illumination and to out-of-plane rotations

Daniel Lefebvre, Henri H. Arsenault, and Sébastien Roy
Appl. Opt. 42(23) 4658-4662 (2003)

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 (10)

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 (17)

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