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Passive THz hazardous article detection apparatus, detection method, and application thereof

A detection method and technology for dangerous goods, which are used in measuring devices, material analysis by optical means, instruments, etc., can solve problems such as inability to detect dangerous goods alone, and inability to identify hidden object information.

Active Publication Date: 2018-12-07
XIAN TIANHE DEFENCE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Visible light images have the characteristics of high resolution, but cannot identify the information of hidden objects, so they cannot be used alone for the detection of dangerous goods

Method used

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  • Passive THz hazardous article detection apparatus, detection method, and application thereof
  • Passive THz hazardous article detection apparatus, detection method, and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040]A passive terahertz dangerous goods detection device, including a visible light image sensor, a terahertz imaging sensor, a processor, an image memory, an operating console, and a display; wherein, the processor, the visible light image sensor, the terahertz imaging sensor, the image memory, and the display connect;

[0041] Wherein, the signal of the visible light image sensor collects the visible light image of the detected object carrying the dangerous goods, and transmits the visible light image to the processor; the terahertz imaging sensor collects the terahertz image of the detected object carrying the dangerous goods , and transmit the terahertz image to the processor; the processor processes the visible light image and the terahertz image to obtain the processed visible light image and the processed terahertz image; the image memory stores the processed visible light image, The processed terahertz image and the image of the dangerous goods detection result; the ...

Embodiment 2

[0043] A passive terahertz dangerous goods detection method, comprising the following steps:

[0044] (1) Using a visible light image sensor and a terahertz image sensor to collect images of the detected object containing the dangerous goods, and obtain the original visible light image and the original terahertz image respectively; wherein the terahertz image sensor is located in the terahertz working environment , the temperature in the terahertz working environment is between 0°C and 40°C, avoiding sunlight and non-LED lamps;

[0045] (2) Perform image preprocessing on the original terahertz image, filter and smooth, denoise to obtain a clear image, and enhance the image by grayscale stretching;

[0046] (3), the terahertz image processed through (2) is further enhanced for denoising, and the noise interference of small blocks in the image is removed;

[0047] (4) Distortion correction is performed on the original visible light image;

[0048] (5) performing information fu...

Embodiment 3

[0051] (1) Using a visible light image sensor and a terahertz image sensor to collect images of the detected object containing the dangerous goods, and obtain the original visible light image and the original terahertz image respectively; wherein the terahertz image sensor is located in the terahertz working environment , the temperature in the terahertz working environment is between 0°C and 40°C, avoiding sunlight and non-LED lamps;

[0052] (2) Perform Gaussian filtering to smooth and denoise the original terahertz image to obtain a clear image, and enhance the image by grayscale stretching;

[0053] (3), further smooth and denoise the terahertz image processed in (2), remove the noise interference of small blocks in the image, and obtain a complete life body area in the terahertz image; first, perform target detection on the entire life body area , and then segment the living body according to the pixel value, count the pixel values ​​in the living body area, obtain the lo...

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Abstract

The invention relates to an object detection method, and especially relates to a hazardous article detection apparatus, a detection method, and an application thereof. A passive THz hazardous articledetection apparatus includes a visible light image sensor, a THz imaging sensor, a processor, an image memory, an operation table and a displayer, wherein the processor is respectively connected to the visible light image sensor, the THz imaging sensor, the image memory and the displayer. In the invention, a problem that hidden hazardous articles, carried by people, cannot be quickly and accurately detected in the prior art is solved, so that the apparatus and method has important significance for fighting against high-dangerous behaviors, such as violence and terrorism, revenge on society, etc. The apparatus, if successfully applied, can make criminal offenders frightened in mind and can reduce generation of such cases fundamentally.

Description

technical field [0001] The invention relates to an object detection method, in particular to a dangerous goods detection device, a detection method and an application thereof. Background technique [0002] The currently used dangerous goods detection system is a stop detection system, such as metal detectors and X-ray detectors. Such systems usually require security personnel to detect suspicious persons one by one. Range, or when multiple targets are detected at the same time, this type of system is inefficient due to the detection of dangerous goods. Laser spectroscopy technology is: when irradiated by laser light, the laser light of certain specific wavelengths absorbed or emitted by the detected object is used to determine whether there are explosives. The limitation is that the laser cannot pass through opaque objects and thus cannot detect hidden explosives. [0003] Thermal imaging technology mainly uses the temperature difference between the hidden object and the s...

Claims

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Application Information

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IPC IPC(8): G01N21/3581G01N21/3563
CPCG01N21/3563G01N21/3581
Inventor 张凯歌龚亚樵赵广州李世龙王虎
Owner XIAN TIANHE DEFENCE TECH
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