Terahertz imaging security inspection equipment and image processing and identification method

Abstract

The invention provides a terahertz imaging security inspection equipment used for collecting the terahertz imaging of a target human body and identifying and judging a dangerous article hidden area in the imaging. The equipment comprises a plane mirror scanning unit which comprises a scanning plane mirror and a plane mirror scanning driving component which drives the scanning plane mirror to swing and is used for scanning the target human body in a vertical direction, a three-plane body focusing scanning mirror unit which comprises a three-plane body focusing scanning mirror and a three-plane body driving component which drives the three-plane body focusing scanning mirror to rotate and is used for scanning the target human body in a horizontal direction, a reflector which is arranged in terahertz wave propagation paths of the scanning plane mirror and the three-plane body focusing scanning mirror and are used for focusing corresponding terahertz waves, a point detector which receiving the terahertz waves focused by the reflector, an imaging and analyzing and identifying device which carries out imaging, analysis and identification on the terahertz waves obtained from the detector, and a terahertz wave generator which emits the terahertz waves for illuminating a target.

Description

technical field [0001] The invention relates to a security inspection device, in particular to a security inspection device using terahertz waves for imaging and an image processing and identification method. Background technique [0002] In recent years, criminals have used various means to hide knives, explosives and other dangerous items, which undoubtedly pose a great threat to personal safety in public places. The development of a fast and accurate security inspection technology is very important to protect the property and life safety of the public. At present, the mainstream security scanners on the market are X-ray scanners, but due to the high energy of X-ray electrons, it is easy to cause ionization damage to the detected substances, so it is not suitable for safe scanning of the human body. [0003] Terahertz radiation refers to electromagnetic waves with a frequency of 0.1-10THz. Similar to x-ray, terahertz radiation can penetrate a variety of materials, such as...

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Problems solved by technology

For this case, the current method is difficult to directly segment the hidden object

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