Terahertz human body security check method, system, medium and equipment

Abstract

The invention provides a terahertz human body security check method and system, a medium and equipment, and the method comprises the steps: performing an image collection step: collecting a terahertzoriginal image of a detected human body, and obtaining the terahertz original image information; performing a preliminary judgment step: judging whether a detected human body has a hidden article or not according to the terahertz original image information, and obtaining preliminary judgment information or security check return information; performing an image library comparison step: matching a marked article with a preset dangerous prohibited article terahertz image library according to the preliminary judgment information to obtain image library comparison information; and performing a danger alarm step: obtaining danger alarm prompt information according to the image library comparison information and the terahertz original image information. Under the condition that security check hardware equipment is not changed, only the preset dangerous article terahertz image library, the article size, the preset danger level value corresponding to the body part where the article is located and the danger level threshold value need to be modified, so that consideration of the safety level and the security check efficiency in different occasions can be met.

Description

technical field [0001] The present invention relates to human body security inspection, in particular to a terahertz human body security inspection method, system, medium and equipment. Background technique [0002] Terahertz is an electromagnetic wave with a frequency of 0.1THz to 10THz, which can penetrate ordinary clothing fabrics and can be widely used in airports, railway stations, subway stations, long-distance passenger stations, and public places such as large conferences and events for safety detection. The terahertz human body security inspection equipment converts the terahertz waves emitted by the human body to form a two-dimensional terahertz image of the human body. When there are objects hidden in the clothes worn by people, the objects will absorb and block the normal trajectory of the terahertz waves , so that there is an intensity contrast between the position of the corresponding object in the terahertz image and the background of the human body, so that i...

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