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Security check tray article positioning method and system based on vision

A positioning method and pallet technology, applied in measuring devices, instruments, optical devices, etc., can solve the problems of low positioning accuracy of dangerous items and low efficiency of item feature extraction, achieve stable, reliable and efficient item safety inspection, improve efficiency, Effect of Reducing Transmit Power Consumption

Pending Publication Date: 2022-03-25
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Claims
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Problems solved by technology

The X-ray imaging method will lead to low positioning accuracy of the existing equipment in the detection of dangerous objects, and lead to low efficiency of object feature extraction

Method used

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  • Security check tray article positioning method and system based on vision
  • Security check tray article positioning method and system based on vision
  • Security check tray article positioning method and system based on vision

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Embodiment Construction

[0024] In order to make the purpose and technical solutions of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present application with reference to the drawings of the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the described embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0025] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. It should also be understood that terms such as those defined in c...

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Abstract

The invention provides a security check tray article positioning method and system based on vision. According to the invention, through carrying out straight line detection, grid region division and contour detection on the tray image, the number of contour feature points in each grid region range is obtained. Therefore, when the number of the contour feature points in the area range exceeds a specified threshold P, it is judged that the to-be-detected article exists in the grid area, and then the area is marked as the to-be-detected area for X-ray detection, and X-ray detection on other areas where no to-be-detected article is placed is avoided. The to-be-detected area can be determined through the image processing technology, the safety inspection efficiency of the X-ray is improved, and the emission power consumption of the X-ray inspection equipment is reduced. According to the invention, stable, reliable and efficient article safety inspection can be realized in airports, customs and other scenes.

Description

technical field [0001] This application relates to the field of security inspection systems, in particular to a vision-based method and system for locating items on security inspection trays. Background technique [0002] Dangerous goods detection is an important task in fields such as airports and customs. Accurate identification of dangerous goods such as explosives is of great value to airports, customs and other departments. In the prior art, the detection of dangerous goods completely relies on X-rays. The X-ray imaging method will lead to low positioning accuracy of the existing equipment in the detection of dangerous objects, and lead to low efficiency of object feature extraction. Contents of the invention [0003] This application aims at the deficiencies of the prior art, and provides a vision-based security inspection tray item positioning method and system. This application uses image processing methods to accurately determine the position of items in the tra...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01B11/24
CPCG01B11/00G01B11/24
Inventor 张师林庄东哲李颖宏
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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