公开(公告)号：US20190094407A1

公开(公告)日：2019-03-28

申请号：US16037810

申请日：2018-07-17

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Li ZHANG ,  Zhiqiang CHEN ,  Le SHEN ,  Qingping HUANG ,  Yunda SUN ,  Xin JIN ,  Hui DING ,  Yuxiang XING

IPC: G01V5/00 ,  G01N23/046

Abstract: The disclosure provides a scanning imaging system for security inspection of an object and an imaging method thereof, the system comprising: a conveying unit configured for bringing the object to move along a conveying direction; a plurality of radiographic sources at one side of the conveying unit, being arranged successively in a direction vertical to a plane, in which the conveying unit is located, and configured for alternately emitting ray beams to form a scanning area; a linear detector array at the other side of the conveying unit, being configured for detecting first projection images, which are formed after the ray beams emitted by the plurality of radiographic sources penetrate through the object, in the process of the object passing through the scanning area; an imaging unit configured for obtaining a first reconstructed image of the object based on the first projection images of the plurality of radiographic sources.

公开(公告)号：US20170068003A1

公开(公告)日：2017-03-09

申请号：US15258209

申请日：2016-09-07

Applicant: Nuctech Company Limited ,  TSINGHUA UNIVERSITY

Inventor： Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Yinong LIU ,  Yaohong LIU ,  Xiang ZOU ,  Huishao HE ,  Shuwei LI ,  Jianping CHANG ,  Wenjian ZHANG

IPC: G01T7/00 ,  G01J1/02

CPC classification number: G01T7/00 ,  G01J1/0271 ,  G01J2001/0276

Abstract: The invention discloses a safety inspection detector and a goods safety inspection system. The safety inspection detector at least comprises a circuit board, a first housing, a second housing, a detection module and a connecting interface. The detection module and the connecting interface are mounted on the circuit board. The first housing is pressed and connected to a first surface of the circuit board, and the second housing is pressed and connected to a second surface of the circuit board. The first housing and the second housing can hermetically wrap the detection module and electronic devices on the circuit board, but bypass the connecting interface to realize leading-out and connection with related interconnected cables by utilizing the connecting interface. The housings can be used for sealing and protecting sensitive electronic devices in the detector, thus being moisture proof and preventing interference.

Abstract translation: 本发明公开了一种安全检查检测器和货物安全检查系统。 安全检查检测器至少包括电路板，第一壳体，第二壳体，检测模块和连接接口。 检测模块和连接接口安装在电路板上。 第一壳体被按压并连接到电路板的第一表面，并且第二壳体被按压并连接到电路板的第二表面。 第一壳体和第二壳体可以将检测模块和电子设备封装在电路板上，但绕过连接接口，通过利用连接接口实现与相关互连电缆的导出和连接。 这些外壳可用于密封和保护检测器中敏感的电子设备，从而防潮并防止干扰。

公开(公告)号：US20160294070A1

公开(公告)日：2016-10-06

申请号：US14246261

申请日：2014-04-07

Applicant: Nuctech Company Limited ,  Tsinghua University

Inventor： Ziran ZHAO ,  Zhiqiang CHEN ,  Yuanjing LI ,  Wanlong WU ,  Yinong LIU ,  Jieqing YANG ,  Wenguo LIU ,  Bin SANG ,  Lei ZHENG

IPC: H01Q21/08 ,  H01Q1/50 ,  H01Q5/378 ,  H01Q21/00 ,  H01Q9/04

CPC classification number: H01Q21/08 ,  G03H5/00 ,  H01Q1/50 ,  H01Q1/525 ,  H01Q5/378 ,  H01Q9/045 ,  H01Q9/0457 ,  H01Q13/02 ,  H01Q21/0081 ,  H01Q21/065

Abstract: There is provided a wideband patch antenna and an antenna array. The antenna includes a dielectric substrate of a rectangle shape, a radiation patch formed on a top surface of the dielectric substrate, a coupling patch formed on the top surface of the dielectric substrate and extending from a side of the dielectric substrate to a position from the radiation patch by a distance, a metal support arranged on the lower surface of the dielectric substrate and extending from the edge of the lower surface of the dielectric substrate downward to the ground, a layer of air having a predetermined thickness being formed between the lower surface of the dielectric substrate and the ground. According to the embodiments, it is possible to improve the directivity of the wideband microstrip antenna while maintaining its small size.

Abstract translation: 提供了宽带贴片天线和天线阵列。 该天线包括矩形电介质基片，形成在电介质基底的顶表面上的辐射贴片，形成在电介质基底的顶表面上并从电介质基片一侧延伸到从 辐射贴片一段距离，金属支架布置在电介质基片的下表面上并从电介质基底的下表面的边缘向下延伸到地面，具有预定厚度的空气层形成在下表面 的电介质基片和地面。 根据实施例，可以在保持其小尺寸的同时提高宽带微带天线的方向性。

公开(公告)号：US20160187500A1

公开(公告)日：2016-06-30

申请号：US14983411

申请日：2015-12-29

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Yanchun WANG ,  Qingjun ZHANG ,  Yuanjing LI ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Yinong LIU ,  Yaohong LIU ,  Jianping CHANG ,  Wenjian ZHANG ,  Shuqing ZHAO ,  Xiang ZOU ,  Yongqiang WANG

IPC: G01T1/202

CPC classification number: G01T1/2018

Abstract: A method for processing a ceramic scintillator array, characterized in that, comprising the following steps: (a) forming, in a first direction, a predetermined number of straight first-direction through-cuts which are parallel to each other and spaced from each other on a scintillator substrate by using laser; (b) adequately filling the first-direction through-cuts with an adhesive and solidifying the adhesive; (c) forming, in a second direction. a predetermined number of second direction through-cuts which are parallel to each other at a predetermined interval on the scintillator substrate by using laser, wherein the second direction is perpendicular to the first direction; and (d) adequately filling the second direction through-cuts with the adhesive and solidifying the adhesive bond.

Abstract translation: 一种用于处理陶瓷闪烁体阵列的方法，其特征在于包括以下步骤：（a）在第一方向上形成预定数量的彼此平行并且彼此间隔开的直的第一方向贯穿切口 通过使用激光在闪烁体衬底上; （b）用粘合剂充分填充第一方向贯穿切割并固化粘合剂; （c）在第二方向上形成。 通过使用激光在闪烁体基板上以预定间隔彼此平行的预定数量的第二方向贯穿切割，其中所述第二方向垂直于所述第一方向; 和（d）用粘合剂充分填充第二方向贯穿切割并固化粘合剂粘结。

公开(公告)号：US20150339521A1

公开(公告)日：2015-11-26

申请号：US14414515

申请日：2014-07-23

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Ziran ZHAO ,  Yuanjing LI ,  Wanlong WU ,  Xianli DING ,  Li ZHANG ,  Yingkang JIN ,  Zongjun SHEN ,  Le TANG

IPC: G06K9/00 ,  G07C9/00 ,  G06T7/00

CPC classification number: G06K9/00362 ,  A61B5/0064 ,  A61B5/1077 ,  A61B6/12 ,  A61B6/463 ,  A61B6/563 ,  G01V5/0008 ,  G06K9/00771 ,  G06K2209/09 ,  G06T7/0002 ,  G06T2207/30196 ,  G06T2207/30232 ,  G07C9/00158

Abstract: The present invention provides a privacy protection method and a human body security inspection system having the same function. The privacy protection method comprises the steps of: acquiring in real-time scanning row or column image data of a personal to be inspected; displaying a physical profile image and an outline image of the personal to be inspected, on basis of the processed image of the scanning row or column image data; transmitting the physical profile image to an equipment end display in a human body security inspection system and displaying it thereon, and displaying the outline image of the personal to be inspected on a remote operation end display of the human body security inspection system; performing the suspicious matter recognition based on the outline image; and correspondingly displaying a suspected frame on the physical profile image, based on the suspicious matter recognized in the outline image.

Abstract translation: 本发明提供了具有相同功能的隐私保护方法和人体安全检查系统。 隐私保护方法包括以下步骤：实时扫描待检查的个人的行或列图像数据; 基于扫描行或列图像数据的处理图像，显示待检查的个人的物理轮廓图像和轮廓图像; 将物理轮廓图像发送到人体安全检查系统中的设备端显示器并在其上显示，并且在人体安全检查系统的远程操作终端显示器上显示被检查人员的轮廓图像; 基于轮廓图像执行可疑物识别; 并且基于在轮廓图像中识别的可疑物，相应地在物理轮廓图像上显示可疑帧。

公开(公告)号：US20150241368A1

公开(公告)日：2015-08-27

申请号：US14572528

申请日：2014-12-16

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Ziran ZHAO ,  Yuanjing LI ,  Wanlong WU ,  Ming RUAN ,  Li ZHANG ,  Yingkang JIN ,  Le TANG ,  Xianli DING ,  Chenguang ZHU

IPC: G01N23/203

CPC classification number: G01N23/203 ,  G01T1/167 ,  G01V5/0025 ,  G01V5/0091

Abstract: A human body back-scattering inspection method and system are discloses. The method includes: obtaining a back-scattering scan image of a human body under inspection; distinguishing a body image from a background image in the back-scattering scan image; and calculating a feature parameter of the background image to determine whether radioactive substance is carried with the human body. With some embodiments of the present disclosure, it is possible to determine whether any radioactive substance is carried with a human body during back-scattering inspection of the human body. In further embodiments of the present disclosure, it is possible to approximately determine which part(s) of the human body carries the radioactive substance. This improves efficiency of inspection.

Abstract translation: 公开了人体背散射检查方法和系统。 该方法包括：获得检查中的人体的背散射​​扫描图像; 在背散射扫描图像中区分身体图像与背景图像; 并计算背景图像的特征参数，以确定放射性物质是否与人体携带。 利用本公开的一些实施例，可以在人体的后散射检查期间确定任何放射性物质是否携带人体。 在本公开的另外的实施例中，可以大致确定人体的哪一部分携带放射性物质。 这提高了检查的效率。

公开(公告)号：US20150199804A1

公开(公告)日：2015-07-16

申请号：US14576705

申请日：2014-12-19

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Ji ZHAO ,  Qingping HUANG ,  Xin JIN

IPC: G06T7/00

CPC classification number: G06T7/0002 ,  G01V5/005 ,  G06T2207/30112

Abstract: A CT system and method thereof are discloses. The system includes: a fixed multi-plane multi-source X-ray generation device and a control system thereof that provide X-ray source used in luggage inspection; a single-energy, pseudo-dual-energy or spectral detector system and data transfer system that receive perspective data of X ray penetrating the luggage, and transfer the data to a computer for processing; a conveyor and a control system thereof that control a speed for moving the luggage forth and back, and perform tomogram scanning; and a host computer system that performs tomogram reconstruction and provides man-machine interaction. The system takes full advantage of characteristics, such as high speed and stability, brought by the distributed ray sources which replace the normal slip ring technology. The system also adopts the idea of inverse-geometry CT, and reduces detector area and cost by increasing the number of ray sources. With the reduction of detector area, cone-beam artifacts and cup-shape artifacts caused by scattering are also reduced, and influence of the oblique effect on registration of dual-energy data is suppressed.

Abstract translation: 公开了一种CT系统及其方法。 该系统包括：提供行李检查中使用的X射线源的固定多平面多源X射线产生装置及其控制系统; 单能量，伪双能量或光谱检测器系统和数据传输系统，其接收穿透行李的X射线的透视数据，并将数据传送到计算机进行处理; 输送机及其控制系统，其控制行李前后移动的速度，并执行断层图像扫描; 以及执行断层图像重建并提供人机交互的主计算机系统。 系统充分利用了代替普通滑环技术的分布式射线源带来的高速度，稳定性等特点。 该系统还采用反几何CT的思想，通过增加射线源数量，减少探测器面积和成本。 随着检测器面积的减小，散射引起的锥束伪影和杯形伪影也减少，并且斜率对双能数据配准的影响受到抑制。

公开(公告)号：US20150185335A1

公开(公告)日：2015-07-02

申请号：US14576674

申请日：2014-12-19

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Ziran ZHAO ,  Zhiqiang CHEN ,  Yuanjing LI ,  Wanlong WU ,  Yinong LIU ,  Ming RUAN ,  Yingkang JIN ,  Le TANG

IPC: G01T1/20

CPC classification number: G01T1/2002 ,  G01T1/2008

Abstract: The invention presents a backscattering scintillation detector. The scintillation detector includes a scintillation crystal detector; a X-ray sensitizing screen, which is disposed forward the scintillation crystal detector and where a backscattered X-ray from an object to be detected is processed and then at least part of the processed X-ray is incident to scintillation crystal detector; and photoelectric multiplier, which is disposed backward the scintillation crystal detector and is configured to collect a light signal from scintillation crystal detector and convert it to an electrical signal. Through the above preferable embodiment, a X-ray sensitizing screen, a scintillation crystal detector, and light guiding and wave-drifting technologies are combined together to obtain a novel scintillation detector, which can improve detection of X-ray, transmission of light signal and conversion of light signal to electrical signal.

Abstract translation: 本发明提出了一种后向散射闪烁检测器。 闪烁检测器包括闪烁晶体检测器; 设置在闪烁晶体检测器前方的X射线增感屏幕，并且处理来自被检测物体的背散射​​X射线，然后处理的X射线的至少一部分入射到闪烁晶体检测器; 以及光电倍增器，其设置在闪烁晶体检测器的后方，并且被配置为从闪烁晶体检测器收集光信号并将其转换为电信号。 通过上述优选实施例，将X射线增感屏，闪烁晶体检测器和导光波漂移技术组合在一起，以获得新的闪烁检测器，其可以改善X射线的检测，光信号的传输和 光信号转换为电信号。

公开(公告)号：US20150185166A1

公开(公告)日：2015-07-02

申请号：US14582069

申请日：2014-12-23

Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

Inventor： Huaping TANG ,  Zhiqiang CHEN ,  Chuanxiang TANG ,  Huaibi CHEN ,  Yuanjing LI ,  Ziran ZHAO ,  Yaohong LIU ,  Shangmin SUN ,  Xinshui YAN ,  Zhanfeng QIN

IPC: G01N23/04 ,  G21K1/02 ,  G01T7/08 ,  G01V5/00

CPC classification number: G01N23/043 ,  G01T7/08 ,  G01V5/0033 ,  G01V5/0041 ,  G01V5/005 ,  G21K1/025

Abstract: The X-ray fluoroscopic imaging system of the present invention comprises: an inspection passage; an electron accelerator; a shielding collimator apparatus comprising a shielding structure, and a first collimator for extracting a low energy planar sector X-ray beam and a second collimator for extracting a high energy planar sector X-ray beam which are disposed within the shielding structure; a low energy detector array for receiving the X-ray beam from the first collimator; and a high energy detector array for receiving the X-ray beam from the second collimator. The first collimator, the low energy detector array and the target point bombarded by the electron beam are located in a first plane; and the second collimator, the high energy detector array and the target point bombarded by the electron beam are located in a second plane.

Abstract translation: 本发明的X射线透视成像系统包括：检查通道; 电子加速器; 包括屏蔽结构的屏蔽准直器装置和用于提取低能平面扇形X射线束的第一准直器和用于提取设置在屏蔽结构内的高能平面扇形X射线束的第二准直器; 低能量检测器阵列，用于接收来自第一准直仪的X射线束; 以及用于从第二准直器接收X射线束的高能量检测器阵列。 第一准直器，低能量检测器阵列和由电子束轰击的目标点位于第一平面中; 并且第二准直器，高能量检测器阵列和由电子束轰击的目标点位于第二平面中。

公开(公告)号：US20150154809A1

公开(公告)日：2015-06-04

申请号：US14540440

申请日：2014-11-13

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Yuanjing LI ,  Ziran ZHAO ,  Shuo WANG ,  Jianping GU ,  Yunda SUN

IPC: G06T19/20 ,  G06T15/10 ,  G06T15/06 ,  G06T7/00

CPC classification number: G06T19/20 ,  G06T7/0012 ,  G06T15/06 ,  G06T15/08 ,  G06T15/10 ,  G06T17/005 ,  G06T2207/10136 ,  G06T2210/12 ,  G06T2219/2021

Abstract: The present disclosure provides method and apparatus for marking a target in a 3D image. The method include steps of: acquiring Computed Tomography (CT) image data of a scene; rendering a 3D image of the scene using ray casting based on the CT image data; removing a transparent region from the 3D image based on a fixed 2D transfer function; and marking the target in the 3D image.

Abstract translation: 本公开提供了用于在3D图像中标记目标的方法和装置。 该方法包括以下步骤：获取场景的计算机断层扫描（CT）图像数据; 使用基于CT图像数据的射线投射来渲染场景的3D图像; 基于固定的2D传递函数从3D图像中去除透明区域; 并在3D图像中标记目标。