Active terahertz security check imaging method and system

Abstract

The invention discloses an active terahertz security check imaging method and system, and the method comprises the steps: collecting a dynamic crowd terahertz image of a walking crowd in an effectiverange through a terahertz security check instrument, and transmitting the dynamic crowd terahertz image to a central server for single-frame processing, acquiring a static crowd terahertz image, performing individual recognition on the static crowd terahertz image, finally processing the static crowd terahertz image into a static individual terahertz image, capturing face information, performing feature processing on the face information, comparing the face information with information in a face recognition information base, and establishing a terahertz face recognition information base. According to the invention, the irradiation range of terahertz is enlarged, the effective range of security check is enlarged, the traditional security check mode is changed, and the problem that only oneperson can be checked each time in the prior art is solved; terahertz face recognition can be carried out, and compared with conventional face recognition, the terahertz face recognition can penetratethrough the face shielding object, and suspicious persons can be recognized more accurately.

Description

technical field [0001] The invention relates to the technical field of terahertz imaging, in particular to an active terahertz security imaging method and system. Background technique [0002] With the development of social economy, many people will go to other places for business trips, visiting friends, and tourism. Airports, railway stations, docks, and large exhibition venues have become places where people gather. Passengers need to be checked at the entrance to prevent travelers from Carrying dangerous items inside, but generally the passengers themselves line up one by one, and the security personnel check the passengers one by one with instruments in their hands. The luggage is checked by the X-ray machine, which is not only time-consuming and laborious, but also when there are many passengers and luggage. Under the circumstances, it is also easy to cause crowding and confusion, which brings hidden dangers to safety; the most important thing is that some illegal pers...

AI Technical Summary

Problems solved by technology

In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the existing terahertz security inspection system follows the traditional security inspection method, and the terahertz security inspection system is fixed at the security inspection gate, and only one person can be checked at a time. For security checks, the scope of security checks is too small, and the efficiency is not much improved compared with traditional security checks. For real criminals, this security check method has huge security risks. threats to life and property

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