A Registration Method of Passive Millimeter Wave Image and Visible Light Image in Human Body Security Inspection

Abstract

The invention relates to a registration method of a passive millimeter wave image and a visible light image in a human body security inspection, which is used for the registration of a visible light image and a passive millimeter wave image in a millimeter wave rapid security inspection. Determine the boundary of the field of view between the visible light image and the passive millimeter wave image by hand-held calibration light source, and save the calibration point image; then comprehensively consider the difference in the field of view angle range between the visible light image and the passive millimeter wave image, optimize the calibration point; finally use the visible light The image is used as the reference, and the perspective transformation and translation transformation of the passive millimeter wave image are completed, and the registration parameters are saved. At the same time, the calibration distance is limited to four distances of 2.0, 2.5, 3.0 and 3.5 meters. In practical applications, the distance information is used to select appropriate registration parameters, and finally the real-time registration output of visible light and passive millimeter wave images is completed. The invention can realize real-time registration output of visible light and passive millimeter wave images in the millimeter wave fast security inspection system.

Description

Technical field [0001] The present invention relates to a method of registration according to the passive millimeter wave image, in particular a mm rapid security system, belonging to the technical field of computer graphics, mainly used in millimeter wave body security inspections. Millimeter wave image and registration of visible light images. Background technique [0002] With the development of millimeter wave detection technology, the security system based on millimeter wave fast imaging can quickly accurately detect the concealed contraband carried by non-cooperative targets, which has been widely studied and applied, especially at the airport, railway station and large venues. Security inspection. [0003] The traditional security system mainly has metal detectors, hand-held metal detectors, X-ray security systems, etc., but metal detection systems, including metal detectors and hand-held metal detectors, can only detect whether non-cooperative targets carry metal items, u...

AI Technical Summary

Problems solved by technology

Although the existing research results have achieved good registration results for the registration of visible light images and millimeter-wave images in their respective application scenarios, they have not considered the certain deformation characteristics of millimeter-wave images under different imaging distances.

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