Method and system for detecting human body hidden item in passive millimeter wave image

A detection method and millimeter wave technology, which can be used in image enhancement, image analysis, image data processing, etc., and can solve problems such as inapplicability of object detection algorithms.

Active Publication Date: 2016-04-20
BEIJING INST OF COMP TECH & APPL +1
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a detection method and system for hidden human body objects in passive millimeter wave images, so as to sol

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  • Method and system for detecting human body hidden item in passive millimeter wave image
  • Method and system for detecting human body hidden item in passive millimeter wave image
  • Method and system for detecting human body hidden item in passive millimeter wave image

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Embodiment Construction

[0077] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0078] The invention provides an effective and accurate detection method for hidden objects in the human body, which is suitable for detecting hidden objects in the human body in a passive millimeter wave security inspection system. In passive millimeter-wave images, the types of dangerous objects detected by the human body are more complex, including metals, plastics, liquids, explosives, etc., which are displayed in the image, or there are hidden objects with a higher gray value than the background gray value of the human body area, or There are hidden objects with lower gray value than the background gray value of the human body area, or there are hidden objects with higher and lower gray value than the background gray value of the human body area at the same time.

[0079] Such as figure ...

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Abstract

The invention discloses a method for detecting a human body hidden item in a passive millimeter wave image, comprising an image preprocessing step in which a collected original passive millimeter wave image is enhanced through three times of iterative enhancement after interpolation reconstruction to acquire a passive millimeter wave image and distinguish between the target and the background of the passive millimeter wave image, a human body area detection step in which human body target detection is carried out through prejudgment on whether there is a human body based on the preprocessed passive millimeter wave image to get a human body area, and a hidden item detection step in which hidden item detection is carried out in the human body area through two times of iteration segmentation and a detected hidden item area is marked.

Description

technical field [0001] The invention relates to a passive millimeter-wave image processing method, in particular to a detection method and system for concealed human objects in a passive millimeter-wave image. Background technique [0002] The millimeter-wave imaging system is divided into active and passive working modes. In the application of detecting hidden objects in the human body, the passive millimeter-wave imaging system occupies the main position. The passive millimeter wave imaging system can not only detect metal objects hidden under the fabric, but also detect dangerous goods such as plastics, liquids, and explosives. The information obtained is more detailed and accurate, which can greatly reduce the false alarm rate. In addition, the passive millimeter wave imaging system does not emit electromagnetic waves and will not cause any harm to the human body. In recent years, passive millimeter-wave imaging technology has been more and more widely used in personnel...

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Application Information

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IPC IPC(8): G06T7/00G06T5/00
Inventor 单海婧穆森王子亨张琍周锦源侯祖贵
Owner BEIJING INST OF COMP TECH & APPL
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