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A passive terahertz dangerous goods detection device, detection method and application thereof

A detection method and technology for dangerous goods, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of unable to identify hidden object information, unable to detect dangerous goods alone, etc.

Active Publication Date: 2021-02-26
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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  • A passive terahertz dangerous goods detection device, detection method and application thereof
  • A passive terahertz dangerous goods detection device, detection method and application thereof
  • A passive terahertz dangerous goods detection device, detection method and application thereof

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Experimental program
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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 dangerous goods, and transmits the visible light image to the processor; the terahertz imaging sensor collects the terahertz image of the detected object carrying dangerous goods, and The terahertz image is transmitted 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 The 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 imaging 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 imaging 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 smooth, denoise to obtain a clear image, and enhance the image by grayscale stretching;

[0046] (3) further enhance and denoise the terahertz image processed by (2), and remove the noise interference of small blocks in the image;

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

[0048] (5) Fusing the information of the terahertz im...

Embodiment 3

[0051] (1) Using a visible light image sensor and a terahertz imaging 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 imaging 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, Then segment the living body according to the pixel value, count the pixel values ​​in the living body area, obtain the low p...

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Abstract

The invention relates to an object detection method, in particular to a dangerous goods detection device, a detection method and an application thereof. 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 are connect. The invention solves the problem of fast and accurate detection of hidden dangerous articles carried by the human body which cannot be realized by the traditional technology.

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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Patent Type & Authority Patents(China)
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