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Method and system for security inspection of luggage

A security inspection and luggage technology, which is applied in the field of luggage inspection methods and systems, and can solve problems such as mismatching display rates and display freezes.

Active Publication Date: 2019-03-19
NUCTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the object of the present invention is to provide a method and system for security inspection of luggage items, so as to solve the problem in the prior art that the image acquisition rate does not match the display rate on the terminal display and the display freezes. technical problem

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  • Method and system for security inspection of luggage
  • Method and system for security inspection of luggage

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Embodiment 1

[0118] This embodiment provides a security inspection method for luggage items, which also includes the operation methods of steps S31 and S32, but in specific applications, since the pixel rate cannot always be guaranteed to be an integer, when the pixel rate is not an integer, it is necessary to Only by adjusting the size of the display rate can the acquisition rate be consistent with the display rate. Step S32 adjusts the display rate and carries out in the following situations:

[0119] Case 1:

[0120] When the number of pixels currently stored in the buffer area satisfies the condition of Y+Vin-Vout>X, increase the display rate; where X is the size of the buffer area, Y is the number of pixels currently stored in the buffer area, Vin is the acquisition rate, Vout is the display rate.

[0121] For the above case 1, the specific flow chart of steps to increase the display rate is as follows Figure 7 As shown, the method is as follows:

[0122] Step S321, when the inpu...

Embodiment 2

[0135] For the security inspection method for luggage items in the first embodiment above, this embodiment gives the following specific examples for illustration:

[0136] Suppose the image output frequency of the terminal display is 60 frames per second, and the pixel acquisition rate of the X-ray machine is 210 columns of pixels per second (210 pixels also means 210 columns of pixels), that is, Vin=210 pixels per second, set a 105 columns of pixels The cache of X=105. The input pixel rate is constant at 210 / 60=3.5 pixels per frame, and the output pixel rate needs to be an integer, so there are only two possible types: 3 pixels per frame or 4 pixels per frame. That is, case 1: the output pixel rate is rounded down to 3 pixels per frame, Vout = 60 (frame per second) * 3 (pixels per frame) = 180 pixels per frame; case 2: rounded up to 4 pixels per frame , Vout=60 (frames per second)*4 (pixels per frame)=240 pixels per frame. In the initial stage of the system, that is, when t...

Embodiment 3

[0139] The method of the above-mentioned embodiment 1 and the specific implementation of the embodiment 2 can solve the stuck problem to a certain extent, but in special cases, when the pixel acquisition rate of the X-ray machine is low, the image display rate can be reduced through the above-mentioned technology, Although the reduced actual pixel display rate is small at this moment, the ratio between the reduced actual display rate and the X-ray pixel acquisition rate is relatively large, and the viewer may obviously feel the change of the image rate and cause discomfort. For example, when the output pixel rate changes between 3 and 4 pixels per frame, the change rate is (4-3) / 3=33.3%, if the output pixel rate is increased to 6 pixels per frame, the output pixel rate changes between 6 and 4 7 pixels are switched between each frame, and the rate of change is (7-6) / 6=16.7%. Therefore, the security inspection method for luggage provided by this embodiment, in addition to steps ...

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Abstract

The invention discloses a luggage security inspection method and a luggage security inspection system. The security inspection method comprises steps of acquiring X ray transmission information, carrying out data processing on the X ray transmission information and carrying out image processing and displaying on an image obtained after data processing. The step of image processing and displaying comprises a sub step in which a display rate is adjusted according to the acquisition rate of the image and the pixel number currently stored in a cache area, wherein the acquisition rate is a pixel number entering the cache area in a unit time period, and the display rate is a pixel number displayed in the cache area in a unit time period. Through adopting the security inspection method and the system, the displayed display rate is calculated and adjusted according to the pixel cache state in the cache area, the rate of pixel acquisition by front-end data is consistent with the rate of pixel consumption by the display, the problem that the mismatch between the rate of pixel acquisition by front-end data and the rate of pixel consumption by the display in the prior art results in interrupt can be solved, the display effects are more smooth, and good observation effects are realized.

Description

technical field [0001] The invention relates to the technical field of security inspection of luggage items, in particular to a method and system for security inspection of luggage items. Background technique [0002] At present, before entering a variety of important public places, it is necessary to go through security inspection equipment for safety inspection, use security inspection equipment to check dangerous goods, and display image information of objects passing through security inspection equipment on the display screen, which is convenient for staff to monitor. The acquisition, processing and display of image information is a key component of the security inspection system. The acquisition of image information usually adopts X-ray scanning imaging technology. The transmission information of X-rays is collected through the data acquisition control module, and the penetration ability of X-rays is used to realize the rapid inspection of items without opening the box....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V5/00
Inventor 雷程智郝建华杨中荣彭华李元景
Owner NUCTECH CO LTD
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