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Inspection equipment and methods of inspecting containers

A technology for inspection equipment and containers, applied in the field of radiation inspection, can solve the problems of complex grayscale reconstruction and boundary processing, difficult practical application, limited application, etc.

Active Publication Date: 2020-09-04
NUCTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CT tomography is complex, expensive, and takes a long time to image, which limits its application in industrial real-time detection
In the process of stereo matching for more complex objects, the gray scale reconstruction and boundary processing are complicated, and the amount of calculation is also large, which is difficult for practical application.

Method used

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  • Inspection equipment and methods of inspecting containers
  • Inspection equipment and methods of inspecting containers
  • Inspection equipment and methods of inspecting containers

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known structures, materials or methods have not been described in detail in order to avoid obscuring the present invention.

[0035] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in ...

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PUM

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Abstract

An inspection device and a method of inspecting a container are disclosed. A scanning device including a sparse area array detector is used to perform transmission scanning on the inspected container to obtain scanning data. Digital focusing is performed at a specific depth position in the depth direction. Defocused pixel values ​​are filtered out to obtain a slice image at that particular depth position. It is judged whether the slice image contains dangerous goods or suspicious goods.

Description

technical field [0001] The disclosure relates to radiation inspection technology, in particular to an inspection device and a method for inspecting a container. Background technique [0002] X-ray transmission technology is often used in container cargo inspection at airports, customs and other places. X-ray transmission technology utilizes an array of linear detectors to obtain a two-dimensional transmission image of the container. For example, X-rays are collimated to form a fan-shaped beam, which is detected through the object to be inspected. When the object is stationary, what the detector receives is only a one-dimensional projection of the object on the ray level. When the object moves in a direction perpendicular to the ray plane, each part of the object passes through the ray beam in turn, and the detector obtains a two-dimensional projection image of the entire object in a line-scanning manner. However, under the above inspection method, the projections in the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/044
CPCG01N23/046G06T7/0004G06T2207/30112G01N23/04G06T2207/10116G01V5/22G06T7/001G06T7/74G06T5/20G06T5/50G06T2207/10028G06T5/70
Inventor 赵自然顾建平易茜刘必成
Owner NUCTECH CO LTD