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.
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[0039] Example 1
[0040]A passive terahertz dangerous goods detection device, comprising a visible light image sensor, a terahertz imaging sensor, a processor, an image memory, a console and a display; wherein the processor is separate from the visible light image sensor, the terahertz imaging sensor, the image memory and the display. connect;
[0041] Wherein, the visible light image sensor signal 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 is used to collect 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 g...
Example Embodiment
[0042] Example 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 and 40°C, avoiding sunlight and non-LED lamps;
[0045] (2) Perform image preprocessing on the original terahertz image, filter, smooth, and denoise to obtain a clear image, and enhance the image through grayscale stretching;
[0046] (3), further enhance the denoising of the terahertz image processed in (2), and remove the noise interference of small blocks in the image;
[0047] (4) Perform distortion correction on the original visible light image;
[0048] (5), perform infor...
Example Embodiment
[0050] Example 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 and 40°C, avoiding sunlight and non-LED lamps;
[0052] (2) Perform Gaussian filtering, smoothing and denoising on the original terahertz image to obtain a clear image, and enhance the image through 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 living body area in the terahertz image; first, perform target detection on the entire living body area , and then divide the living body according to the pixel value, count the pixel value in the ...
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