A near-infrared laser illumination imaging system and method for security inspection

Abstract

The invention discloses a near-infrared laser illumination imaging system and a near-infrared laser illumination imaging method for safety inspection. A power supply system is adopted for providing a power supply for imaging of a visible light-near-infrared camera, an imaging controller and a near-infrared plane imaging camera, so that higher stability is obtained; the imaging controller is used for carrying out time-sharing control on light emitting of laser diodes and triggering the near-infrared plane imaging camera to image while light emitting is carried out by the laser diodes; laser light in certain wavelengths can be generated by multiple laser diodes and a driving power of the multiple laser diodes; an image collecting and processing terminal is used for carrying out parameter setting on the imaging controller and collecting, storing and processing sequential images irradiated by the laser light in different wavelengths; the type of a to-be-detected target can be determined by referring to a preset target reflection spectrum feature library according to reflectivities of the target under the different laser wavelengths in a scene of an image grey scale inversion place; existing equipment and existing programs are utilized for solving the problems existing in the safety inspection field that the detecting difficulty is large and the distinguishing of hazardous liquid and safe liquid is uneasy.

Description

technical field [0001] The invention relates to the field of safety inspection, in particular to a near-infrared laser illumination imaging system and method for safety inspection. Background technique [0002] The illegal transportation and use of dangerous liquid substances seriously affect public safety and become a new method of terrorist activities. The inspection and monitoring of liquid substances are increasingly valued. Most of the inspections of liquids in civil aviation, railway and other passenger transport fields currently use visual and odor detection methods. Missed and misjudgment occur from time to time, and it is difficult to cope with the peak period of inspection. Currently widely used X-ray safety inspection instruments mainly inspect metal objects such as guns and knives, while the inspection of liquid dangerous goods such as gasoline and alcohol mainly relies on manual work. Manual detection methods are unsatisfactory in terms of detection efficiency ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a near-infrared laser lighting imaging system and method for safety inspection, which solves the detection difficulties that exist in the current detection systems and detection methods, such as liquid explosives, pine perfume, gasoline, acetone, ethanol, etc. The problem that explosive liquids are difficult to distinguish from safe liquids such as water, cola, milk, and juice

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