Method for locking suspicious radiation source carrier

Abstract

The invention provides a method for locking a suspicious radiation source carrier, and belongs to the technical field of nuclear radiation detection. The method comprises the following steps: recording videos at the same time by using a plurality of video recording devices located at different positions in a nuclear radiation monitoring environment under a non-shading dynamic scene condition; transmitting the recorded videos to a data processing center, so that the data processing center counts the number of radiation frames in unit time according to the received videos; analyzing pedestrian distance data change in the visual field of the video devices and radiation frame number change in unit time to obtain the radiation source carrying probability of pedestrians near the video devices; and according to the obtained probability of the radiation source carried by the pedestrian near the video devices, realizing cross-video device locking and tracking of a suspicious carrier through a pedestrian re-identification technology. According to the invention, the method can achieve the recognition and tracking of a suspicious radiation source carrying person in a nuclear radiation monitoring environment.

Description

technical field [0001] The invention relates to the technical field of nuclear radiation detection, in particular to a method for locking a person carrying a suspicious radiation source. Background technique [0002] Nuclear technology is widely used in all walks of life and promotes the construction and development of the national economy. On the other hand, there are certain risks in the application of nuclear technology, and nuclear safety issues are related to national security and public health. Nuclear radiation monitoring is an important means of nuclear safety assurance and nuclear emergency. my country has established a nuclear radiation monitoring network, but the number of national control points is limited. At present, the common nuclear radiation detection method is to use various nuclear radiation detectors with gases, scintillators and semiconductor materials as the medium for nuclear radiation detection. Due to the long dead time of gas nuclear radiation d...

AI Technical Summary

Problems solved by technology

Then use an algorithm to judge whether the environment contains nuclear radiation, but this method needs to use a shading device to block the sensor, which causes the video recording device based on the CMOS sensor to lose its original function, resulting in a waste of resources, which is not conducive to the popularization of this method.

In addition, someone proposed a nuclear radiation detection method based on a CMOS sensor in a dynamic non-shading scene, which can detect nuclear radiation by filtering the color channel, but the original information of the video is seriously lost

[0004] However, although the above-mentioned method can detect nuclear radiation, it cannot identify and track persons carrying suspicious radiation sources in a nuclear radiation environment.

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