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Target detection method and system

A target detection and target object technology, which is used in character and pattern recognition, instruments, computer parts, etc. to achieve high detection efficiency and good performance.

Inactive Publication Date: 2020-11-10
SHANGHAI XINBA AUTOMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Usually, the distance between the object and the X-ray source is different, and the posture in the package is different, resulting in the formation of X-ray images of different sizes and different rotation angles on the X-ray security inspection machine. Automatic detection of

Method used

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  • Target detection method and system

Examples

Experimental program
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Embodiment Construction

[0027] see figure 1 , figure 1 A schematic flow chart of a target detection method is shown, which specifically includes the following steps:

[0028] S10, start the processing flow.

[0029] S11. Taking photos and processing the object to be detected to obtain a structural feature map of the image to be detected.

[0030] First, take pictures of the items to be detected, and then calculate and obtain the structural feature map of the images of the items to be detected. For the specific process, please refer to figure 2 steps described.

[0031] S12. Search for a template image with the greatest similarity to the structural feature image of the image to be tested from the template library, and determine whether the image to be detected contains a target object according to the similarity.

[0032] Finding the template image with the greatest similarity to the structural feature map of the image to be tested from the template gallery is to find the maximum similarity subgr...

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Abstract

The invention discloses a target detection method and system, and the method comprises the following steps: photographing and processing a to-be-detected object, and obtaining a structural feature mapof a to-be-detected image; searching a template graph with the maximum similarity with the structural feature graph of the to-be-detected image from a template graph library, and judging whether theto-be-detected image contains a target object or not according to the similarity; if so, calculating a bounding box of the template graph and a bounding box of a target object in the to-be-detected image; comparing a bounding box of a to-be-detected target object with the obtained bounding box information of the template graph to obtain the positioning of the target object in the to-be-detected image; and displaying the positioning of the target object and giving an alarm. By utilizing the method and the system disclosed by the invention, the scale change and the rotation change of the targetobject in an X-ray image can be adapted, and the method and the system can also be applied to the condition of local object shielding. In addition, the method and the system can complete a target detection task by only needing a small amount of template images containing the target object, and have relatively strong practicability.

Description

technical field [0001] The invention relates to the field of automatic security inspection, and more specifically relates to the application of a target detection method and system in the field of automatic security inspection. Background technique [0002] In recent years, terrorist attacks in public places such as airports, subways, and railway stations, as well as criminal incidents in which criminals use express delivery channels to deliver dangerous goods, have caused the country and society to attach great importance to security inspection work. At present, X-ray security inspection machines are widely used at home and abroad to assist manual inspection to realize the detection of dangerous goods in luggage, express delivery and other packages. However, this method of relying on the naked eye to determine whether there are dangerous objects in the X-ray image is not only time-consuming and labor-intensive, but also easily affected by the work experience and physical co...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06K9/46
CPCG06V10/462G06V10/44G06V10/757G06V2201/07G06F18/22
Inventor 吕岳金卫平吕淑静
Owner SHANGHAI XINBA AUTOMATION TECH CO LTD
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