Method for realizing single-source and multi-view security inspection, and system thereof

Abstract

Embodiments of the invention disclose a method for realizing single-source and multi-view security inspection, the method is used in the field of the security inspection. The method comprises that: a ray source emits a radiation ray beam to carry out a perspective of the current angle or the current position for an object requiring inspection; a detection device detects the ray generated due to the perspective of the object requiring inspection, and adopts the ray as projection data; the projection data is treated to reconstitute the image of the object requiring inspection, and to judge whether the image achieves a security inspection purpose; if the image does not achieve the security inspection purpose, a rotation angle is arranged, the ray source and the detection device rotate to the rotation angle or the above steps are repeated performed until the purpose of the security inspection is achieved. The embodiments of the invention further disclose a system for realizing the single-source and multi-view security inspection. With the system, the multi-view, omnibearing and positioning scan within 360 degrees can be completed by the rotation, the image of the detected object can be rapidly reconstituted. The method and the system are applicable for any occasions requiring safety inspections.

Description

technical field [0001] The invention belongs to the technical field of safety inspection, and more specifically relates to a method and system for realizing single-source multi-angle safety inspection. Background technique [0002] Although most environments around the world are safe, there are also some reactionary terrorists who are waiting for opportunities, or drug dealers are rampantly conducting illegal transactions, and there are many other illegal activities. Therefore, to combat drug smuggling and contraband carrying, Even terrorist acts and other harmful acts are of great significance to maintaining people's stable and peaceful living environment. Therefore, in large-scale gatherings and exhibitions, airports, stations, subway terminals and other occasions, security checks are carried out on people's luggage, containers, etc. to prevent harm. It appears to be very necessary. [0003] At present, there are usually the following methods for implementing security che...

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above that when using CT scanning equipment to perform CT tomography on large-volume objects, the general method is to use the scanning method of rotation + translation, that is, the ray source and detector rotate around the central axis, and the object to be inspected along the parallel axis It moves in the direction of the rotation axis, so the structure of the CT equipment is complicated, because it needs to overcome the problem that the cables are twisted together due to continuous rotation

[0008] For objects with a large cross-section, if you want to accurately reconstruct the image, you need to perform projections from a large number of angles, and you cannot quickly transmit imaging, resulting in low security inspection efficiency. , ports, and passenger transport areas are intolerable

[0009] In addition, for perspective imaging, if there are multiple items in the direction parallel to the ray beam, the items will be superimposed on each other in the image. Generally, it is difficult to accurately distinguish the items, which brings great difficulties to the discovery of prohibited items.

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