Method for improving detection speed of existing security check machine by multiples

Abstract

The invention provides a method for improving a detection speed of an existing security check machine by multiples. The method comprises the following step: in a buffer array, removing two-stage data from the head of a queue by use of a first removal speed and a second removal speed greater than the first removal speed. The method ensures image scrolling stability and also can improve the real-time performance.

Description

technical field [0001] The invention relates to X-ray security inspection equipment based on line scan imaging technology, in particular to a method for realizing real-time and smooth scrolling in high-speed line array imaging. Background technique [0002] Under the irradiation of X-rays, the security inspection equipment uses a linear photodiode array to scan and image the packages passing through the scanning gap. Each scan obtains a column of X-ray image data wrapped in the scanning slit. If the package passes through the scanning gap at a constant speed, and the line array scans and images at uniform time intervals, then the X-ray image of the entire package is obtained by assembling the image series of each scan. [0003] It is assumed that the X-axis direction of the image (a two-dimensional image) is consistent with the direction in which the package runs, and the Y-axis direction is consistent with the scanning direction of the line array. If the belt speed is con...

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Problems solved by technology

[0017] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method for realizing real-time and smooth scrolling in high-speed line array imaging, which is used to solve the problem of image instability caused by the accelerated transmission speed of security inspection equipment in the prior art. question

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