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公开(公告)号：US20190138802A1
公开(公告)日：2019-05-09
申请号：US16305839
申请日：2017-05-17
Applicant: SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO., LTD , CHINA COMMUNICATION TECHNOLOGY CO., LTD.
Inventor： Chunchao QI , Zhiquan LI , Hanjiang CHEN , Guangsheng WU , Shukai ZHAO , Qing DING
Abstract: This invention relates to a method and a device for human body gender detection in a microwave image. The structure feature of a human body itself as well as the constructed vertical direction spatial distribution histogram and horizontal direction spatial distribution histogram are used to accurately locate the chest position and the crotch position of the human body. A human body chest subimage is extracted according to the chest position, and a human body crotch subimage is extracted according to the crotch position. Then, the feature values of the human body chest subimage and the human body crotch subimage are respectively extracted by a feature value extraction algorithm, and the human body gender is automatically identified according to the feature values. The technical solution of this invention is simple, and after experimental verification, can be effectively applied in actual microwave security check system. This technical solution has high real time and high robustness, and its correct recognition rate meets the operating requirements. As such, the problem of how to identify human body gender in real time and accurately in a microwave security check system is solved. Besides, because the present invention can accurately locate the chest position and the crotch position of a human body, the human body's private part can be shielded and protected effectively according to this invention.
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12.发明申请公开(公告)号：US20190025421A1
公开(公告)日：2019-01-24
申请号：US16065998
申请日：2016-01-27
Inventor： Chunchao QI , Shukai ZHAO , Beibei LIU , Guangsheng WU , Qing DING , Xiongwei HUANG , Jungcheng LIU , Chengyan JIA , Yandong ZHANG , Yanli LIU
Abstract: This invention provides a security check apparatus for multiple human bodies based on linear frequency modulation, which comprises a scanning device, a millimeter wave signal transceiver module, and an image processing unit. The scanning device comprises several detection seats and several guideways and motors arranged on the detection seats; the detection seats are configured to accommodate persons to be security checked; a set of the millimeter wave signal transceiver modules are arranged on each guideway, and each millimeter wave signal transceiver module is driven by the motor to move along the guideway; the several detection seats are arranged in longitudinal direction. The millimeter wave signal transceiver modules are configured to transmit millimeter wave signals to the persons to be security checked and receive millimeter wave signals reflected from the persons to be security checked. The image processing unit is configured to perform holographic 3D imaging on the human bodies of the persons to be security checked based on the reflected millimeter wave signals to obtain 3D images of the human bodies. This invention also provides a security check method for multiple human bodies based on linear frequency modulation. This invention has the advantages of low cost, simple structure, easy integration, high resolution, more persons are detected per unit time, and no radiation hazard to human bodies.
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公开(公告)号：US20190353776A1
公开(公告)日：2019-11-21
申请号：US16323206
申请日：2016-08-09
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION CO., LTD.
Inventor： Juncheng LIU , Chao SUN , Chunchao QI
Abstract: A millimeter wave imaging apparatus includes a crystal oscillator, a power divider, a millimeter wave transceiver unit, a local-oscillation signal processing unit, a second frequency mixer and an image processing device; the power divider performs power distribution on an oscillation signal generated by the crystal oscillator, and outputs a clock trigger signal and a local-oscillation signal; the local-oscillation signal processing device processes the local-oscillation signal and outputs a second local-oscillation signal; the millimeter wave transceiver unit processes an echo signal reflected by an object to be detected, and outputs a first intermediate-frequency signal; the second frequency mixer mixes the second local-oscillation signal and the first intermediate-frequency signal, and outputs a second intermediate-frequency signal; the image processing module processes the second intermediate-frequency signal, and images the object to be detected.
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Patent Agency Ranking
公开(公告)号：US20190260121A1
公开(公告)日：2019-08-22
申请号：US16331113
申请日：2017-09-06
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Inventor： Chunchao QI , Shukai ZHAO , Hanjiang CHEN , Beibei LIU
Abstract: A power adjustment method and apparatus, and a human body security check device are disclosed. The method may be applied in a human body security check device or an inspection device provided with a millimeter wave transceiver and comprises: obtaining a current humidity value by detecting the ambient humidity around the millimeter wave transceiver using a preset humidity sensor; determining a target power attenuation value of the adjustable power attenuator according to the current humidity value, the sum of the target power attenuation value and a power attenuation value caused to a millimeter wave signal by the ambient humidity being a constant value; and controlling the adjustable power attenuator to adjust its power attenuation value to be consistent with the target power attenuation value. An adjustable power attenuator is provided in a millimeter wave signal transmitting link of the millimeter wave transceiver.
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公开(公告)号：US20190204473A1
公开(公告)日：2019-07-04
申请号：US16330298
申请日：2016-12-21
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Inventor： Hanjiang Chen , Tiansheng ZHANG , Chunchao QI , Shukai ZHAO
CPC classification number: G01V8/26 , G01V8/005 , G01V8/10 , G01V8/22 , G06K9/00362
Abstract: A terahertz security check method and system may include: a terahertz scanning device collecting a terahertz original image of a human body under test, and sending the same to a central server that identifies the terahertz original image, and determines whether the human body under test carries an article. If so, the image is marked with the position of the article and sent to a monitoring terminal. The monitoring terminal correspondingly marking the position of the article on a pre-stored human body cartoon image, and displaying the terahertz original images before and after marking to monitoring personnel, so that the monitoring personnel determine whether the central server has an identification error; and if so, the monitoring terminal changing a marker on the human body cartoon image, and sending the changed cartoon image to a client of security check personnel for displaying.
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公开(公告)号：US20180342064A1
公开(公告)日：2018-11-29
申请号：US16019562
申请日：2018-06-27
Inventor： Chunchao QI , Yanli LIU , Hanjiang CHEN , Guangsheng WU , Shukai ZHAO , Qing DING
CPC classification number: G06T7/13 , G01N22/00 , G01V5/0016 , G06K9/00771 , G06K2209/09 , G06T7/0002 , G06T7/001 , G06T7/11 , G06T7/12 , G06T7/174 , G06T2207/30196
Abstract: The present disclosure relates to a method and device for detecting concealed dangerous objects in microwave images. The method includes: simultaneously processes multiple adjacent microwave images, obtains edge images of a single image by using two methods for each image, obtains dangerous-object edges of the single image by edge fitting operation, obtains a rough dangerous-object contour by performing a registration operation and a second edge fitting operation on the dangerous-object edges of the multiple images, and performs a regional-binarization operation and a filtering on the rough dangerous-object contour to obtain a second dangerous-object area. The present disclosure has high detection accuracy and calculation efficiency.
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公开(公告)号：US20180341015A1
公开(公告)日：2018-11-29
申请号：US16052650
申请日：2018-08-02
Inventor： Chunchao QI , Xiongwei Huang , Hanjiang Chen , Guangsheng Wu , Shukai Zhao , Qing Ding
IPC: G01S13/88 , G01S13/89 , G05B19/414
Abstract: A servo rotary scanning system of three-dimensional holographic imaging may include a servomotor (20) having a first angle sensor (21), a second angle sensor (30), a control component (40), a servo driver (50) and a rotary frame (10), the servo rotary scanning system of three-dimensional holographic imaging is a full-closed loop servo control system, the second angle sensor (30) detects an actual rotating angle of the rotary frame (10) and feeds back a frame feedback signal to the control component (40), an instruction signal in the control component (40) is compared with the frame feedback signal to generate a following error, the first angle sensor (21) detects an output rotating angle of the servomotor (20) and feeds back a motor feedback signal to the servo driver (50), and the servo driver (50) controls the servomotor (20) to rotate according to the following error and the motor feedback signal.
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18.发明申请公开(公告)号：US20180321376A1
公开(公告)日：2018-11-08
申请号：US16032086
申请日：2018-07-11
Inventor： Chunchao QI , Rong WANG , Xiongwei HUANG , Chao SUN , Xiaoxiang HOU
CPC classification number: G01S13/89 , G01N29/069 , G01S7/412 , G01S13/04 , G01V13/00
Abstract: The present disclosure relates to a monitoring method, a monitoring system and a control device for a human-body security-inspection device. The monitoring method includes: collecting operation parameters of preset monitoring points in target circuit modules of the human-body security-inspection device; obtaining parameter ranges according to module identifiers of the target circuit modules and monitoring-point identifiers of the preset monitoring points, wherein the parameter ranges are associated with the module identifiers and the monitoring-point identifiers respectively; determining whether the operation parameters are in the parameter ranges respectively, and then determining location information of a fault point according to the module identifiers and the monitoring-point identifiers if any of the operation parameters is not in a corresponding parameter range. Therefore, the present disclosure can quickly locate the position of the fault point, thus it is convenient in the maintenance and test work, and improve the efficiency of the maintenance and test work.
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