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公开(公告)号：US20180313949A1
公开(公告)日：2018-11-01
申请号：US16029679
申请日：2018-07-09
Inventor： Chunchao QI , Zhihui Feng , Guangsheng Wu , Shukai Zhao , Qing Ding
CPC classification number: G01V8/26
Abstract: The present disclosure relates to an inspection device for detecting objects inside shoes, including: a transmitting antenna array configured to radiate a millimeter-wave signal to an under-test object, and a millimeter-wave transmitting branch configured to provide the millimeter-wave signal for the transmitting antenna array; a receiving antenna array configured to receive an echo signal of the under-test object, and a millimeter-wave receiving branch configured to receive the echo signal received by the receiving antenna array; and a slide guide, the transmitting antenna array and the receiving antenna array being slidably connected to the slide guide. By adopting the solution of the present disclosure, convenient and quick inspection for detecting objects inside shoes of a under-test person can be achieved without requiring the under-test person to take off the shoes thereof.
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公开(公告)号：US11250249B2
公开(公告)日：2022-02-15
申请号：US16321807
申请日：2017-07-17
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO., LTD.
Inventor： Hanjiang Chen , Yanli Liu , Chunchao Qi , Guangsheng Wu , Shukai Zhao , Qing Ding
Abstract: A human body gender automatic recognition method includes: acquiring a current millimeter wave grayscale image, and determining gender part region positions of a human body in the millimeter wave grayscale image according to a pre-set body proportion; extracting a region sub-image corresponding to the gender part region position; performing dimension normalization on the region sub-image to obtain a normalized region sub-image; performing feature information extraction on the normalized region sub-image to obtain feature information about the normalized region sub-image; recognizing the millimeter wave grayscale image by means of each pre-set classifier, and respectively outputting results; and integrating the output results to obtain a classification recognition result of the millimeter wave grayscale image. The method has relatively high recognition rate and calculation efficiency and solves the problem of a privacy protection and detection method in a millimeter wave security inspection system.
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公开(公告)号：US11211701B2
公开(公告)日：2021-12-28
申请号：US16334582
申请日：2016-12-15
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , Shenzhen Institute of Terahertz Technology and Innovation
Inventor： Zhihui Feng , Chunchao Qi , Hanjiang Chen , Rong Wang , Shukai Zhao
IPC: H01Q3/22 , H01Q21/06 , H04B10/2507 , H04N5/225
Abstract: An electrically scanned array antenna device applied to a millimeter wave imaging system is provided. The electrically scanned array antenna device comprises an adjustable light source for outputting an optical signal with an adjustable wavelength; an electro-optical modulation module; an optocouple; a time delay module for performing optical delay of different duration on each modulated signal, and correspondingly changing the duration of the optical delay according to the wavelength of the optical signal to obtain modulated signals of different phases; an optical detector; and an array antenna. The millimeter wave is loaded on the optical signal with an adjustable wavelength to obtain a modulated signal; the modulated signal is divided into multiple signals; time delay of different duration is performed on each signal; and millimeter wave signals of different phases are obtained after demodulation and are simultaneously transmitted to scan an object to be measured.
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公开(公告)号：US11194073B2
公开(公告)日：2021-12-07
申请号：US16336772
申请日：2017-08-04
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , Shenzhen Institute of Terahertz Technology and Innovation
Inventor： Hanjiang Chen , Zhiquan Li , Chunchao Qi , Shukai Zhao
Abstract: A millimeter wave image based human body foreign object detection method, comprising: acquiring a millimeter wave gray scale image of a human body; according to a pre-determined foreign object imaging characteristic, extracting from the millimeter wave gray scale image a foreign object area image; according to a pre-determined foreign object image recognition algorithm, performing calculations on the foreign object area image, and acquiring a foreign object image from the foreign object area image; displaying the foreign object image as a foreign object detection result. Also provided is a millimeter wave image based human body foreign object detection system.
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公开(公告)号：US10969485B2
公开(公告)日：2021-04-06
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 , G01S7/03 , H01Q1/00 , H01Q3/24 , G01S13/42 , H01Q3/04 , G05B19/414 , G01S13/02 , G01S13/89
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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Patent Agency Ranking
公开(公告)号：US10884116B2
公开(公告)日：2021-01-05
申请号：US16033246
申请日：2018-07-12
Inventor： Chunchao Qi , Hanjiang Chen , Zhiquan Li
Abstract: A human-body foreign-matter detection method and system based on millimeter-wave image. The method comprises: obtaining a millimeter-wave grayscale image of a human body; extracting a human-body contour image in the millimeter-wave grayscale image; constructing a vertical space distribution histogram in a vertical direction and a horizontal space distribution histogram in a horizontal direction for the human-body contour image; obtaining positions of limbs of the human body according to the vertical space distribution histogram, the horizontal space distribution histogram and a pre-set human-body proportion model; identifying a foreign matter in the human-body contour image according to pre-set foreign-matter feature identification models; and marking a position of the foreign matter on the human-body contour image according to the positions of the limbs, and generating a foreign-matter detection result.
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公开(公告)号：US20200205666A1
公开(公告)日：2020-07-02
申请号：US16728250
申请日：2019-12-27
Applicant: Shenzhen Institute of Terahertz Technology and Innovation , Xiongan China Communication Technology Co., Ltd.
Inventor： Minwei YANG , Junqiu ZHAN , Qing DING
Abstract: The invention belongs to the technical field of OCT and provides an OCT image processing device and system. An FPGA is in communication connection with an upper computer via a PCIE interface to receive OCT image data acquired by the upper computer and to carry out image preprocessing on the OCT image data and then send the OCT image data to the upper computer to display. The OCT image data is acquired and displayed by the upper computer and the OCT image data's preprocessing is implemented by the FPGA, so that the processing efficiency of the OCT image data is greatly improved.
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公开(公告)号：US20200150265A1
公开(公告)日：2020-05-14
申请号：US16607577
申请日：2017-09-04
Applicant: China Communication Technology Co., Ltd.
Inventor： Chunchao QI , Guangsheng WU , Shukai ZHAO , Qian XIAO , Aixian WANG
Abstract: A close-range microwave imaging method includes: implementing Fourier transform in a pre-set rotation axis direction on an echo signal reflected from a target object and acquired by rotating an array antenna around the pre-set rotation axis to obtain a first echo signal, wherein the first echo signal is represented in polar coordinates; multiplying the first echo signal by a pre-set reference function to obtain a second echo signal; converting the second echo signal into rectangular coordinates by a pre-set algorithm to obtain a third echo signal; and implementing three-dimensional Fourier transform on the third echo signal to obtain three-dimensional image data of the target object. By means of the method, three-dimensional image data of a target object can be obtained fast, fast imaging of the target object can be realized, the data processing amount is small, the imaging precision is high and the method is easy to implement.
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公开(公告)号：US20200042779A1
公开(公告)日：2020-02-06
申请号：US16321807
申请日：2017-07-17
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN VICTOOTH TERAHERTZ TECHNOLOGY CO., LTD.
Inventor： Hanjiang Chen , Yanli Liu , Chunchao Qi , Guangsheng WU , Shukai Zhao , Qing Ding
Abstract: A human body gender automatic recognition method includes: acquiring a current millimeter wave grayscale image, and determining gender part region positions of a human body in the millimeter wave grayscale image according to a pre-set body proportion; extracting a region sub-image corresponding to the gender part region position; performing dimension normalization on the region sub-image to obtain the region sub-image after normalization; performing feature information extraction on the region sub-image after normalization to obtain feature information about the region sub-image after normalization; recognizing the millimeter wave grayscale image by means of each pre-set classifier, and respectively outputting results; and integrating the output results to obtain a classification recognition result of the millimeter wave grayscale image. The method has relatively high recognition rate and calculation efficiency, and solves the problem of a privacy protection and detection method in a millimeter wave security inspection system.
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公开(公告)号：US20200041691A1
公开(公告)日：2020-02-06
申请号：US16340332
申请日：2017-08-04
Applicant: CHINA COMMUNICATION TECHNOLOGY CO., LTD. , SHENZHEN INSTITUTE OF TERAHERTZ TECHNOLOGY AND INNOVATION
Inventor： Chunchao QI , Aixian WANG , Hanjiang CHEN , Xiongwei HUANG , Yanli LIU , Chengyan JIA , Shukai ZHAO
Abstract: A GPU-based human body microwave echo simulation method includes: transmitting emulation input parameters from the memory of a CPU host into the display memory of a GPU device; configuring, at the CPU host, parallel computing network parameters to be run at the GPU device; initiating a kernel function for human body microwave echo simulation preset in the CPU host; computing the kernel function in parallel, in a plurality of processing kernels of the GPU device, in a multi-threaded manner, according to the parallel computing network parameters, to obtain simulation echoes of human body microwaves; transmitting the obtained simulation echoes of human body microwaves from the GPU device back to the CPU host. The method makes full use of the characteristic that a GPU can perform parallel computing to accelerate the echo simulation process, greatly improving the real-time performance of echo simulation of a human body microwave scanning and imaging system.
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