Image fusion based on millimeter-wave for concealed weapon detection

Weiwen Zhu; Yuejin Zhao; Chao Deng; Cunlin Zhang; Yalin Zhang; Jingshui Zhang

doi:10.1117/12.869725

4 November 2010 Image fusion based on millimeter-wave for concealed weapon detection

Weiwen Zhu, Yuejin Zhao, Chao Deng, Cunlin Zhang, Yalin Zhang, Jingshui Zhang

Proceedings Volume 7854, Infrared, Millimeter Wave, and Terahertz Technologies; 785414 (2010) https://doi.org/10.1117/12.869725
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

This paper describes a novel multi sensors image fusion technology which is presented for concealed weapon detection (CWD). It is known to all, because of the good transparency of the clothes at millimeter wave band, a millimeter wave radiometer can be used to image and distinguish concealed contraband beneath clothes, for example guns, knives, detonator and so on. As a result, we adopt the passive millimeter wave (PMMW) imaging technology for airport security. However, in consideration of the wavelength of millimeter wave and the single channel mechanical scanning, the millimeter wave image has law optical resolution, which can't meet the need of practical application. Therefore, visible image (VI), which has higher resolution, is proposed for the image fusion with the millimeter wave image to enhance the readability. Before the image fusion, a novel image pre-processing which specifics to the fusion of millimeter wave imaging and visible image is adopted. And in the process of image fusion, multi resolution analysis (MRA) based on Wavelet Transform (WT) is adopted. In this way, the experiment result shows that this method has advantages in concealed weapon detection and has practical significance.

Citation Download Citation

Weiwen Zhu, Yuejin Zhao, Chao Deng, Cunlin Zhang, Yalin Zhang, and Jingshui Zhang "Image fusion based on millimeter-wave for concealed weapon detection", Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 785414 (4 November 2010); https://doi.org/10.1117/12.869725

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KEYWORDS

Image fusion

Image processing

Passive millimeter wave sensors

Extremely high frequency

Wavelet transforms

Image resolution

Weapons

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