A hidden object detection system and detection method thereof

Abstract

The invention relates to a hidden object detecting system and a detecting method thereof. The detecting system comprises a signal generating module, a signal emitting module, a control module, a signal receiving module, a signal processing module, an image input module, an image analysis module and a display module, wherein the control module controls the signal generating module to generate millimeter waves; the millimeter waves are spread to a target region through a space, so that a scattering field is generated around hidden objects in the target region; the signal receiving module detects the scattering field; in addition, received echo signals are transmitted to the signal processing module through the control module; the signal processing module performs two-dimensional or three-dimensional image reconstitution on the received echo signals to obtain a change distribution image of dielectric constants inside and around the hidden objects; the distribution image is transmitted to the image analysis module through the image input module; the image analysis module performs denoising and local feature extraction processing on the reconstructed distribution image to obtain a hidden object image; the hidden object image is transmitted to the display module for displaying.

Description

Technical field [0001] The invention belongs to the technical field of object detection, and specifically relates to a hidden object detection system and a detection method thereof. Background technique [0002] In recent years, security issues have received increasing attention, and people have put forward higher requirements for the reliability and intelligence of security inspection systems. Traditional metal detectors can only detect targets within a short distance and a small range, and their efficiency is low, which is far from being able to meet the current security inspection needs. In order to detect the weapons hidden in the clothes of criminals in time and effectively prevent the occurrence of terrorist incidents, hidden weapon detection has become an important research field. At present, the main imaging instruments include visible light imagers, X-ray imagers, millimeter wave imagers, and infrared imagers. Visible light imaging can clearly reflect the details and c...

AI Technical Summary

Problems solved by technology

However, mmWave imaging systems that use lenses to focus mmWave energy typically have a limited field of view and small aperture size

And in many applications, the cost of the lens system is still high

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