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

IPC: G06K9/00 ,  G06K9/46 ,  G06T7/73 ,  G06T7/62

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.

公开(公告)号：US20190025421A1

公开(公告)日：2019-01-24

申请号：US16065998

申请日：2016-01-27

Applicant: SHENZHEN CCT THZ TECHNOLOGY CO., LTD. ,  CHINA COMMUNICATION TECHNOLOGY CO., LTD.

Inventor： Chunchao QI ,  Shukai ZHAO ,  Beibei LIU ,  Guangsheng WU ,  Qing DING ,  Xiongwei HUANG ,  Jungcheng LIU ,  Chengyan JIA ,  Yandong ZHANG ,  Yanli LIU

IPC: G01S13/88 ,  G01S13/89 ,  G01S7/03 ,  G01S7/35

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.