Abstract

Active millimeter-wave imaging systems for concealed object detection offer the possibility of much higher image contrast than passive systems, especially in indoor applications. By studying active millimeter-wave images of different test objects derived in the W band, we show that multispectral illumination is critical to the detectability of targets. We also propose to use image change detection techniques, including image differencing, normalized difference vegetation index, and principle component analysis to process the multispectral millimeter-wave images. The results demonstrate that multispectral illumination can significantly reveal the object features hidden by image artifacts and improve the appearance of the objects.

© 2008 Optical Society of America

Full Article  |  PDF Article
Related Articles
Study of active millimeter-wave image speckle reduction by Hadamard phase pattern illumination

Gaetan Koers, Ilja Ocket, Qi Feng, Vahid Tavakol, Irina Jäger, Bart Nauwelaers, and Johan Stiens
J. Opt. Soc. Am. A 25(2) 312-317 (2008)

Comparison of speckle reduction diversity tools for active millimeter-wave imaging

Irina Jaeger, Johan Stiens, Lixao Zhang, Saiful Islam, Gaetan Koers, and Roger Vounckx
J. Opt. Soc. Am. A 25(7) 1716-1721 (2008)

Near-infrared active polarimetric and multispectral laboratory demonstrator for target detection

Mehdi Alouini, François Goudail, Arnaud Grisard, Jérôme Bourderionnet, Daniel Dolfi, Arnaud Bénière, Ivar Baarstad, Trond Løke, Peter Kaspersen, Xavier Normandin, and Gerard Berginc
Appl. Opt. 48(8) 1610-1618 (2009)

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

Equations (7)

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