A Detection Method of Human Hidden Objects Based on X-ray Backscattering Image

A detection method and backscattering technology, which is applied in the detection field of human hidden objects, can solve the problems of increased difficulty in segmentation of human hidden objects, achieve the effects of improving security inspection speed and quality, satisfying segmentation results, and improving segmentation algorithms

Active Publication Date: 2018-01-16
TIANJIN CHONGFANG TECH
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Problems solved by technology

At present, the scanned images obtained by the above-mentioned equipment mainly rely on manual interpretation by inspectors, and there are very few research results on the automatic detection technology of dangerous goods for such images. , Clothing materials, human body posture, and lighting factors make it more difficult to quickly and accurately segment human hidden objects.

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  • A Detection Method of Human Hidden Objects Based on X-ray Backscattering Image
  • A Detection Method of Human Hidden Objects Based on X-ray Backscattering Image
  • A Detection Method of Human Hidden Objects Based on X-ray Backscattering Image

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Embodiment Construction

[0035] In order to further understand the invention content, features and effects of the present invention, the following examples are given here, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0036] see figure 1 , a detection method for human hidden objects based on X-ray backscattered images, which completes the segmentation task through adaptive dynamic threshold and global threshold calculation. The detailed steps are:

[0037] S101: Collect X-ray backscatter images, preprocess the X-ray backscatter images, and obtain preprocessed images;

[0038] 1) Image grayscale

[0039] This specific embodiment adopts the DIB structure to extract the RGB pixel values ​​of the X-ray backscattered image, and carries out weighted average of the three components with different weights, wherein the red pixel weight is 30%, the green pixel is 59%, and the blue pixel 11%;

[0040] 2) Image denoising

[0041] In this specific embodiment, Gaussia...

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Abstract

The invention discloses a detection method of human hidden objects based on X-ray backscatter images, relates to the technical field of computer image processing, and is characterized in that it includes the following steps: collecting X-ray backscatter images, and preprocessing the obtained images ; A threshold calculation method combining global threshold and dynamic threshold is performed on the preprocessed image, and the gray level discontinuity caused by the dynamic threshold is processed by using smoothing technology; The three evaluation indicators, the uniformity within the region and the contrast between regions, are used as feedback, and the dynamic threshold with the best segmentation effect is adaptively obtained, and finally the ideal segmentation effect is obtained. On this basis, the connected region labeling method is used to extract the segmented hidden objects. The method has the characteristics of high working efficiency and accurate detection results.

Description

technical field [0001] The invention relates to the technical field of computer image processing, in particular to a method for detecting human hidden objects based on X-ray backscattered images. Background technique [0002] With the in-depth research on the detection, evaluation and emergency plan of hazard sources at home and abroad, X-ray backscatter imaging technology has been used in the field of security inspection to detect hidden objects carried by the human body. Among them, the image segmentation of scanned images is the most basic link of X-ray backscattered image human detection. Its goal is to extract hidden objects from the human body from X-ray backscatter scan images. Complete and effective automatic segmentation of human hidden objects plays an important role in feature extraction, classification and identification of hidden objects, and judgment of danger levels. At present, the scanned images obtained by the above-mentioned equipment mainly rely on manu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/11G06T5/00
Inventor 戴维迪王诗瑶何吉元贾重王玉川
Owner TIANJIN CHONGFANG TECH
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