CN111323845A - Millimeter wave imaging security inspection equipment - Google Patents
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- CN111323845A CN111323845A CN202010226602.4A CN202010226602A CN111323845A CN 111323845 A CN111323845 A CN 111323845A CN 202010226602 A CN202010226602 A CN 202010226602A CN 111323845 A CN111323845 A CN 111323845A
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- 238000007689 inspection Methods 0.000 title claims description 29
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Abstract
The invention relates to the technical field of security check systems, in particular to millimeter wave imaging security check equipment; the system comprises a millimeter wave imaging module, an infrared imaging module, a central processor, a security check channel and an alarm system, wherein the infrared imaging module is an infrared emission unit and is used for preferentially scanning target object data and sending the target object data to the central processor for imaging and identification; the millimeter wave imaging module comprises a millimeter wave transmitting unit and a millimeter wave array antenna unit and is used for carrying out secondary scanning when the target object data has suspicious regions and sending the suspicious regions to the central processor for imaging and identifying the suspicious regions. The invention improves the imaging resolution of the suspicious region where the dangerous object is located based on the double detection of the infrared imaging module and the millimeter wave imaging module, ensures real-time imaging and can clearly image and identify the dangerous object.
Description
Technical Field
The invention relates to the technical field of security inspection systems, in particular to millimeter wave imaging security inspection equipment.
Background
The millimeter wave human body imaging technology is an advanced technology in the field of global security at present, and equipment can effectively detect objects hidden in various parts of a human body under the condition that the equipment is not directly contacted with the human body, particularly can detect non-metal objects, and can acquire information such as the shape, the size, the position and the like of the hidden objects from images. In addition, the millimeter wave human body imaging device has the characteristics of no harm to a human body and strong penetrating power, the transmitting power of the millimeter wave human body imaging device is less than one thousandth of electromagnetic wave radiation of a mobile phone, articles carried by the human body can be accurately identified, the objectivity, the accuracy and the pertinence of the inspection are effectively improved, the labor intensity of a security inspector is reduced, and the security inspection efficiency is improved.
At present, the millimeter wave imaging technology adopted in the aspect of personnel security inspection applies the Synthetic Aperture Radar (SAR) imaging principle that radar moves and a target does not move, and the problems that the imaging resolution is low and forbidden articles with smaller volumes cannot be detected exist in security inspection are solved. Therefore, a millimeter wave imaging security inspection device is provided.
Disclosure of Invention
The invention aims to provide millimeter wave imaging security inspection equipment to solve the problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a millimeter wave imaging security inspection device comprises a millimeter wave imaging module, an infrared imaging module, a central processor, a security inspection channel and an alarm system,
the infrared imaging module is an infrared transmitting unit and is used for preferentially scanning target object data and sending the target object data to the central processor for imaging and identification;
the millimeter wave imaging module comprises a millimeter wave transmitting unit and a millimeter wave array antenna unit, and is used for carrying out secondary scanning when the target object data has a suspicious region and sending the suspicious region to the central processor for imaging and identifying the suspicious region;
the central processor comprises a millimeter wave receiving unit, an infrared receiving unit, a millimeter wave image processing and analyzing unit, an infrared image processing and analyzing unit and a decision-making unit, the infrared receiving unit is used for receiving data of a target object passing through a security check channel, the infrared data of the target object is obtained through processing and analysis by the infrared image processing and analyzing unit, imaging and identification are carried out, whether suspicious regions exist in the target object data or not is checked, when a suspicious region exists, the decision unit is used for giving an instruction to the millimeter wave receiving unit, the millimeter wave receiving unit receives data of the suspicious region, and the millimeter wave image processing and analyzing unit processes and analyzes to obtain millimeter wave imaging and identification of suspicious regions, the decision unit is used for alarming through the alarm system when a dangerous object is detected;
the infrared transmitting unit, the millimeter wave transmitting unit and the millimeter wave array antenna unit are respectively electrically connected with the infrared receiving unit and the millimeter wave receiving unit, the millimeter wave receiving unit is electrically connected with the millimeter wave image processing and analyzing unit, the infrared receiving unit is electrically connected with the infrared image processing and analyzing unit, the millimeter wave image processing and analyzing unit and the infrared image processing and analyzing unit are respectively electrically connected with the decision-making unit, and the decision-making unit is electrically connected with the alarm system.
Specifically, the infrared emission units are arranged on the left side and the right side of the security check channel and distributed towards the security check channel; the millimeter wave transmitting unit and the millimeter wave array antenna unit are arranged at the top and the bottom of the security check channel and distributed towards the security check channel.
Specifically, the central processor further comprises a display system for displaying images of the target object data and the suspicious region data.
Specifically, the infrared image processing and analyzing unit comprises an infrared data processing module, an infrared data analyzing module and an infrared database, the infrared database is used for storing conventional dangerous object characteristics, the infrared data processing module processes target object data based on an infrared image processing flow, matching is performed according to the conventional dangerous object characteristics in the infrared database, analysis is performed through the infrared data analyzing module, whether suspicious regions exist in the target object data or not is checked, and when the suspicious regions exist, suspicious region information is fed back to the decision unit.
Specifically, the infrared image processing flow is non-uniform correction, and target object data are corrected based on an optimal square approximation polynomial algorithm.
Specifically, the millimeter wave image processing and analyzing unit comprises a millimeter wave data processing module, a millimeter wave database and a millimeter wave analyzing module, wherein the millimeter wave database is used for storing conventional dangerous article differential operators, the millimeter wave data processing module processes suspicious region data based on a millimeter wave image processing flow, matching is performed according to the conventional dangerous article differential operators in the millimeter wave database, and analysis is performed through the millimeter wave analyzing module so as to realize imaging and identification of dangerous objects in a suspicious region; and when the dangerous object exists, feeding the information of the dangerous object back to the decision unit.
Specifically, the millimeter wave image processing procedure includes the steps of:
s1: filtering and denoising, namely performing filtering smoothing treatment on suspicious region data based on a morphological composite filtering algorithm;
s2: image restoration, namely further performing image restoration on the suspicious region data obtained in the step S1 based on a wiener filtering algorithm;
s3: image reconstruction, namely further performing image reconstruction on the suspicious region data obtained in the step S2 based on wavelet domain regularization;
s4: and (4) image segmentation, namely further segmenting the suspicious region data obtained in the step S3 based on an automatic threshold segmentation algorithm, extracting the characteristics of the dangerous objects in the suspicious region, and matching the characteristics with a conventional differential operator of the dangerous goods.
Specifically, the alarm system is an alarm.
The invention has the beneficial effects that: the invention improves the imaging resolution of the suspicious region where the dangerous object is located based on the double detection of the infrared imaging module and the millimeter wave imaging module, ensures real-time imaging and can clearly image and identify the dangerous object; meanwhile, compared with the existing active human body security check imaging system technology, the system can rapidly image a target object, does not need a series of complicated preparations such as shoe taking-off and waistband removing required by active security check equipment, and can achieve real-time imaging.
Drawings
Fig. 1 is a schematic block diagram of a millimeter wave imaging security inspection apparatus according to the present invention;
fig. 2 is a flowchart of a millimeter wave imaging security inspection apparatus according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a millimeter wave imaging security inspection device comprises a millimeter wave imaging module, an infrared imaging module, a central processor, a security inspection channel and an alarm system,
the infrared imaging module is an infrared transmitting unit and is used for preferentially scanning target object data and sending the target object data to the central processor for imaging and identification;
the millimeter wave imaging module comprises a millimeter wave transmitting unit and a millimeter wave array antenna unit, and is used for carrying out secondary scanning when the target object data has a suspicious region and sending the suspicious region to the central processor for imaging and identifying the suspicious region;
the central processor comprises a millimeter wave receiving unit, an infrared receiving unit, a millimeter wave image processing and analyzing unit, an infrared image processing and analyzing unit and a decision-making unit, the infrared receiving unit is used for receiving data of a target object passing through a security check channel, the infrared data of the target object is obtained through processing and analysis by the infrared image processing and analyzing unit, imaging and identification are carried out, whether suspicious regions exist in the target object data or not is checked, when a suspicious region exists, the decision unit is used for giving an instruction to the millimeter wave receiving unit, the millimeter wave receiving unit receives data of the suspicious region, and the millimeter wave image processing and analyzing unit processes and analyzes to obtain millimeter wave imaging and identification of suspicious regions, the decision unit is used for alarming through the alarm system when a dangerous object is detected;
the infrared transmitting unit, the millimeter wave transmitting unit and the millimeter wave array antenna unit are respectively and electrically connected with the infrared receiving unit and the millimeter wave receiving unit, the millimeter wave receiving unit is electrically connected with the millimeter wave image processing and analyzing unit, the infrared receiving unit is electrically connected with the infrared image processing and analyzing unit, the millimeter wave image processing and analyzing unit and the infrared image processing and analyzing unit are respectively and electrically connected with the decision-making unit, and the decision-making unit is electrically connected with the alarm system; based on double detection of the infrared imaging module and the millimeter wave imaging module, the imaging resolution of a suspicious region where the dangerous object is located is improved, real-time imaging is guaranteed, and the dangerous object can be imaged and identified clearly; meanwhile, compared with the existing active human body security check imaging system technology, the system can rapidly image a target object, does not need a series of complicated preparations such as shoe taking-off and waistband removing required by active security check equipment, and can achieve real-time imaging.
Specifically, the infrared emission units are arranged on the left side and the right side of the security check channel and distributed towards the security check channel; the millimeter wave transmitting unit and the millimeter wave array antenna unit are arranged at the top and the bottom of the security check channel, are distributed towards the security check channel and are used for performing security check imaging on a target object passing through the security check channel.
Specifically, the central processor further comprises a display system for displaying images of the target object data and the suspicious region data.
Specifically, the infrared image processing and analyzing unit comprises an infrared data processing module, an infrared data analyzing module and an infrared database, the infrared database is used for storing conventional dangerous object characteristics, the infrared data processing module processes target object data based on an infrared image processing flow, matching is performed according to the conventional dangerous object characteristics in the infrared database, analysis is performed through the infrared data analyzing module, whether suspicious regions exist in the target object data or not is checked, and when the suspicious regions exist, suspicious region information is fed back to the decision unit.
Specifically, the infrared image processing flow is non-uniform correction, and target object data are corrected based on an optimal square approximation polynomial algorithm.
Specifically, the millimeter wave image processing and analyzing unit comprises a millimeter wave data processing module, a millimeter wave database and a millimeter wave analyzing module, wherein the millimeter wave database is used for storing conventional dangerous article differential operators, the millimeter wave data processing module processes suspicious region data based on a millimeter wave image processing flow, matching is performed according to the conventional dangerous article differential operators in the millimeter wave database, and analysis is performed through the millimeter wave analyzing module so as to realize imaging and identification of dangerous objects in a suspicious region; and when the dangerous object exists, feeding the information of the dangerous object back to the decision unit.
Specifically, the millimeter wave image processing procedure includes the steps of:
s1: filtering and denoising, namely performing filtering smoothing treatment on suspicious region data based on a morphological composite filtering algorithm;
s2: image restoration, namely further performing image restoration on the suspicious region data obtained in the step S1 based on a wiener filtering algorithm;
s3: image reconstruction, namely further performing image reconstruction on the suspicious region data obtained in the step S2 based on wavelet domain regularization;
s4: and (4) image segmentation, namely further segmenting the suspicious region data obtained in the step S3 based on an automatic threshold segmentation algorithm, extracting the characteristics of the dangerous objects in the suspicious region, and matching the characteristics with a conventional differential operator of the dangerous goods.
Specifically, the alarm system is an alarm.
Further, the optimal square approximation polynomial algorithm, the morphological composite filtering algorithm, the wiener filtering algorithm, the wavelet domain regularization and the automatic threshold segmentation algorithm related to the present invention are all the prior art, and are not described herein again.
Further, referring to fig. 2, the millimeter wave imaging security inspection device for security inspection according to the present invention includes the following steps:
s1: the infrared imaging module scans a target object passing through the security check channel;
s2: the infrared receiving unit receives target object data passing through a security check channel;
s3: the infrared image processing and analyzing unit processes and analyzes the infrared data to obtain the infrared data imaging and identification of the target object, screens suspicious regions for the first time, and issues an instruction to the millimeter wave receiving unit by using the decision unit when the suspicious regions exist;
s4: the millimeter wave imaging module scans the suspicious region;
s5: the millimeter wave receiving unit receives data of the suspicious region;
s6: the millimeter wave image processing and analyzing unit processes and analyzes the millimeter wave image to obtain millimeter wave imaging and identification of the suspicious region, and feeds the millimeter wave imaging and identification back to the decision unit when the dangerous object is found;
s7: the decision unit gives an alarm through an alarm system.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (8)
1. A millimeter wave imaging security inspection device comprises a millimeter wave imaging module, an infrared imaging module, a central processor, a security inspection channel and an alarm system,
the infrared imaging module is an infrared transmitting unit and is used for preferentially scanning target object data and sending the target object data to the central processor for imaging and identification;
the millimeter wave imaging module comprises a millimeter wave transmitting unit and a millimeter wave array antenna unit, and is used for carrying out secondary scanning when the target object data has a suspicious region and sending the suspicious region to the central processor for imaging and identifying the suspicious region;
the central processor comprises a millimeter wave receiving unit, an infrared receiving unit, a millimeter wave image processing and analyzing unit, an infrared image processing and analyzing unit and a decision-making unit, the infrared receiving unit is used for receiving data of a target object passing through a security check channel, the infrared data of the target object is obtained through processing and analysis by the infrared image processing and analyzing unit, imaging and identification are carried out, whether suspicious regions exist in the target object data or not is checked, when a suspicious region exists, the decision unit is used for giving an instruction to the millimeter wave receiving unit, the millimeter wave receiving unit receives data of the suspicious region, and the millimeter wave image processing and analyzing unit processes and analyzes to obtain millimeter wave imaging and identification of suspicious regions, the decision unit is used for alarming through the alarm system when a dangerous object is detected;
the infrared transmitting unit, the millimeter wave transmitting unit and the millimeter wave array antenna unit are respectively electrically connected with the infrared receiving unit and the millimeter wave receiving unit, the millimeter wave receiving unit is electrically connected with the millimeter wave image processing and analyzing unit, the infrared receiving unit is electrically connected with the infrared image processing and analyzing unit, the millimeter wave image processing and analyzing unit and the infrared image processing and analyzing unit are respectively electrically connected with the decision-making unit, and the decision-making unit is electrically connected with the alarm system.
2. The millimeter wave imaging security inspection device of claim 1, wherein the infrared emission units are disposed on the left and right sides of the security inspection channel and are distributed towards the security inspection channel; the millimeter wave transmitting unit and the millimeter wave array antenna unit are arranged at the top and the bottom of the security check channel and distributed towards the security check channel.
3. The millimeter wave imaging security inspection device of claim 1, wherein the central processor further comprises a display system for displaying images of the target object data and the suspect region data.
4. The millimeter wave imaging security inspection device of claim 1, wherein the infrared image processing and analyzing unit comprises an infrared data processing module, an infrared data analyzing module and an infrared database, the infrared database is used for storing conventional dangerous object features, the infrared data processing module processes target object data based on an infrared image processing flow, matching is performed according to the conventional dangerous object features in the infrared database, the infrared data analyzing module analyzes the target object data to check whether suspicious regions exist in the target object data, and when the suspicious regions exist, suspicious region information is fed back to the decision unit.
5. The millimeter wave imaging security inspection device of claim 4, wherein the infrared image processing procedure is non-uniform correction, and the target object data is corrected based on a best-squares-approximation polynomial algorithm.
6. The millimeter wave imaging security inspection device according to claim 1, wherein the millimeter wave image processing and analyzing unit comprises a millimeter wave data processing module, a millimeter wave database and a millimeter wave analyzing module, the millimeter wave database is used for storing conventional dangerous goods differential operators, the millimeter wave data processing module processes data of a suspicious region based on a millimeter wave image processing flow, matching is performed according to the conventional dangerous goods differential operators in the millimeter wave database, and analysis is performed through the millimeter wave analyzing module to realize imaging and identification of dangerous objects in the suspicious region; and when the dangerous object exists, feeding the information of the dangerous object back to the decision unit.
7. The millimeter wave imaging security inspection device of claim 6, wherein the millimeter wave image processing procedure comprises:
s1: filtering and denoising, namely performing filtering smoothing treatment on suspicious region data based on a morphological composite filtering algorithm;
s2: image restoration, namely further performing image restoration on the suspicious region data obtained in the step S1 based on a wiener filtering algorithm;
s3: image reconstruction, namely further performing image reconstruction on the suspicious region data obtained in the step S2 based on wavelet domain regularization;
s4: and (4) image segmentation, namely further segmenting the suspicious region data obtained in the step S3 based on an automatic threshold segmentation algorithm, extracting the characteristics of the dangerous objects in the suspicious region, and matching the characteristics with a conventional differential operator of the dangerous goods.
8. A millimeter wave imaging security inspection device according to claim 1, wherein said alarm system is an alarm.
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Cited By (3)
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| CN111880178A (en) * | 2020-07-27 | 2020-11-03 | 北京理工大学 | Traveling millimeter wave active and passive composite imaging method |
| CN112185587A (en) * | 2020-09-24 | 2021-01-05 | 东风汽车集团有限公司 | Health monitoring method in automatic driving vehicle and storage medium |
| CN113671589A (en) * | 2021-09-14 | 2021-11-19 | 清华大学 | Safety detection match physical system |
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