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 ArticleMore Like This
Seokwon Yeom, Dong-Su Lee, YuShin Jang, Mun-Kyo Lee, and Sang-Won Jung
Opt. Express 20(9) 9371-9381 (2012)
Seokwon Yeom, Dong-Su Lee, Jung-Young Son, Min-Kyoo Jung, YuShin Jang, Sang-Won Jung, and Seok-Jae Lee
Opt. Express 19(3) 2530-2536 (2011)
Irina Jaeger, Johan Stiens, Lixao Zhang, Saiful Islam, Gaetan Koers, and Roger Vounckx
J. Opt. Soc. Am. A 25(7) 1716-1721 (2008)