Article X-ray picture acquisition and matching method and device in security check process

Abstract

The invention discloses an article X-ray picture acquisition and matching method and device in a security check process, and the method comprises the steps: recording the time T1 that a package arrives at a photoelectric switch and the time T2 that the package leaves the photoelectric switch when the package passes through a detection region, and estimating the length of the package and the estimated length of an X-ray picture corresponding to the package; the time T1, the estimated length of the X-ray picture corresponding to the parcel and the collection time T and length of the X-ray picture are matched, parcels with different lengths can be adapted, the matching problem of multiple parcels with the same outline is solved, the accuracy is high, calibration is easy, the hardware cost is low, and meanwhile, the matching efficiency is high. The method is suitable for the condition that a plurality of articles are stacked or disorderly pass through the security inspection machine during security inspection, and the matching accuracy is high.

Description

technical field [0001] The invention relates to the technical field of security inspection, in particular to a method and device for collecting and matching X-ray pictures of objects in the security inspection process. Background technique [0002] At present, security inspection machines are used in many occasions to detect whether there are dangerous or prohibited items. The existing X-ray image of the item is obtained by using the security inspection machine, the appearance image of the object is obtained by the camera, the contour line is extracted from the X-ray image and the appearance image, and the similarity between the contour lines of the X-ray image and the appearance image is compared , to determine if the x-ray image and exterior image are for the same item. The above method needs to use a complex algorithm to determine the outline of the item. This algorithm cannot solve the problem of how to match multiple items with the same outline before and after. For it...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, provide a package that can be adapted to different lengths, solve the matching problem of multiple packages with the same profile before and after, and have high accuracy, easy calibration, and low hardware cost during the security inspection process. X-ray image acquisition and matching method and device thereof

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