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    RADIATION PROTECTION ARRANGEMENT AND SECURITY INSPECTION DEVICE
    1.
    发明公开
    RADIATION PROTECTION ARRANGEMENT AND SECURITY INSPECTION DEVICE 审中-公开

    公开(公告)号：US20240361487A1

    公开(公告)日：2024-10-31

    申请号：US18690097

    申请日：2022-07-22

    Applicant: NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

    Inventor： Li ZHANG ,  Yunda SUN ,  Xin JIN ,  Wuyang LIANG ,  Ming CHANG ,  Le SHEN

    IPC: G01V5/22

    CPC classification number: G01V5/22

    Abstract: A radiation protection arrangement, including: a housing, the housing including a first port and a second port; and a tray, the tray having an accommodation space. The tray is allowed to pass through a channel within the housing. The tray has a first end wall, a second end wall, and a bottom portion connected between the first end wall and the second end wall. A shape of the first end wall and/or a shape of the second end wall are/is configured to fit with an inner wall of the housing, so as to block a radiation from leaving the channel from the accommodation space through the second port or the first port. Further provided is a security inspection device, including the radiation protection arrangement.

    METHOD OF TRAINING IMAGE DECOMPOSITION MODEL, METHOD OF DECOMPOSING IMAGE, ELECTRONIC DEVICE, AND STORAGE MEDIUM
    2.
    发明公开
    METHOD OF TRAINING IMAGE DECOMPOSITION MODEL, METHOD OF DECOMPOSING IMAGE, ELECTRONIC DEVICE, AND STORAGE MEDIUM 审中-公开

    公开(公告)号：US20240037816A1

    公开(公告)日：2024-02-01

    申请号：US18225060

    申请日：2023-07-21

    Applicant: NUCTECH COMPANY LIMITED

    Inventor： Li ZHANG ,  Yunda SUN ,  Zheng HU ,  Gang FU ,  Qiang LI

    IPC: G06T11/00 ,  G06T5/50

    CPC classification number: G06T11/006 ,  G06T5/50 ,  G06T2207/20221 ,  G06T2207/20084 ,  G06T2207/20081

    Abstract: A method of training an image decomposition model, a method of decomposing an image, an electronic device, and a storage medium are provided. The method of training the image decomposition model includes: acquiring a training set; inputting first and second training images into first and second adversarial neural networks respectively, so as to determine a first loss function value; inputting a third training image into the first and second adversarial neural networks respectively, so as to determine a second loss function value; determining a third loss function value according to a comparison result between an acquired fusion image and the third training image, where the fusion image is generated by fusing generated images of the first and second adversarial neural networks, and adjusting a parameter of the image decomposition model according to at least one of the first to third loss function values.

    DETECTOR DEVICE, DUAL ENERGY CT SYSTEM AND DETECTION METHOD USING THE SYSTEM
    4.
    发明申请
    DETECTOR DEVICE, DUAL ENERGY CT SYSTEM AND DETECTION METHOD USING THE SYSTEM 有权
    检测器装置，双能量CT系统和使用该系统的检测方法

    公开(公告)号：US20150378047A1

    公开(公告)日：2015-12-31

    申请号：US14748407

    申请日：2015-06-24

    Applicant: Tsinghua University ,  Nuctech Company Limited

    Inventor： Zhiqiang CHEN ,  Li ZHANG ,  Xin JIN ,  Qingping HUANG ,  Le SHEN ,  Yunda SUN

    IPC: G01V5/00 ,  G01T7/08

    CPC classification number: G01V5/0041 ,  A61B6/4266 ,  G01T1/202 ,  G01T1/362 ,  G01T7/08 ,  G01V5/005

    Abstract: The present disclosure discloses a detector device comprising a plurality of detector assemblies. Each detector assembly comprises at least one detection crystal units having a first energy response and those having a second energy response, which are both arranged along a first direction at intervals, each detection crystal unit having a first/second energy response including at least one detection crystals having a first/second energy response arranged along a second direction. The at least one detection crystal units having a first energy response and the at least one detection crystal units having a second energy response are, at least partially, alternatively arranged along the first direction when viewed from an incidence direction of the X-ray. The present disclosure also discloses a dual energy CT system having the detector device and a CT detection method using this system.

    Abstract translation: 本公开公开了一种包括多个检测器组件的检测器装置。 每个检测器组件包括具有第一能量响应的至少一个检测晶体单元和具有第二能量响应的检测晶体单元，它们都沿着第一方向间隔排列，每个检测晶体单元具有包括至少一个检测的第一/第二能量响应 具有沿第二方向布置的第一/第二能量响应的晶体。 当从X射线的入射方向观察时，具有第一能量响应的至少一个检测晶体单元和具有第二能量响应的至少一个检测晶体单元至少部分地沿第一方向布置。 本公开还公开了一种具有检测器装置和使用该系统的CT检测方法的双能CT系统。

    RADIOGRAPHY SYSTEMS BASED ON DISTRIBUTED RAY SOURCE
    7.
    发明申请
    RADIOGRAPHY SYSTEMS BASED ON DISTRIBUTED RAY SOURCE 审中-公开

    公开(公告)号：US20170122884A1

    公开(公告)日：2017-05-04

    申请号：US15301345

    申请日：2015-12-14

    Applicant: NUCTECH COMPANY LIMITED

    Inventor： Li ZHANG ,  Xin JIN ,  Huaping TANG ,  Qingping HUANG ,  Yunda SUN ,  Zhiqiang CHEN

    IPC: G01N23/04

    CPC classification number: G01N23/04 ,  G01N23/046 ,  G01N2223/3307 ,  G01N2223/423 ,  G01N2223/643 ,  G01V5/0041

    Abstract: The present disclosure discloses a radiography system including: a ray source, comprising a plurality of X-ray generators which are distributed on one or more planes intersected with a moving direction of an object being inspected; a detector module comprising a plurality of detection units; a data collection circuit; a controller, configured to control at least two X-ray generators of the plurality of X-ray generators in the ray source to generate X-rays alternately such that the object is scanned by the generated X-rays; and control the detector module and the data collection circuit to respectively obtain detection data corresponding to the at least two X-ray generators; and a data processing computer, configured to create images of the object being inspected in view angles of the at least two X-ray generators based on the detection data. The above embodiments may implement a multi-view-angle perspective imaging system within a single scan plane by utilizing a distributed X-ray source and reuse of the detectors.

    OBJECT DETECTION METHODS, DISPLAY METHODS AND APPARATUSES
    9.
    发明申请
    OBJECT DETECTION METHODS, DISPLAY METHODS AND APPARATUSES 有权
    对象检测方法，显示方法和设备

    公开(公告)号：US20150332448A1

    公开(公告)日：2015-11-19

    申请号：US14138399

    申请日：2013-12-23

    Applicant: Nuctech Company Limited ,  Tsinghua University

    Inventor： Li ZHANG ,  Zhiqiang CHEN ,  Ziran ZHAO ,  Qiang LI ,  Jianping GU ,  Yunda SUN

    IPC: G06T7/00 ,  G06T15/08 ,  G06T7/60 ,  G01V5/00

    CPC classification number: G06T7/0004 ,  G01V5/005 ,  G06K9/00201 ,  G06T7/0002 ,  G06T15/08 ,  G06T2200/04 ,  G06T2207/10116 ,  G06T2207/30112

    Abstract: Disclosed are object detection method, display methods and apparatuses. The method includes obtaining slice data of inspected luggage in the CT system; generating 3D volume data of objects in the luggage from the slice data; for each object, determining a semantic description including at least a quantifier description of the object based on the 3D volume data; and upon reception of a user selection of an object, presenting the semantic description of the selected object while displaying a 3D image of the object. The above solutions can create a 3D model for objects in the inspected luggage in a relatively accurate manner, and thus provide better basis for subsequent shape feature extraction and security inspection, and reduce omission factor.

    Abstract translation: 本发明涉及物体检测方法，显示方法和装置。 该方法包括在CT系统中获取检验行李的切片数据; 从切片数据生成行李中物体的3D体积数据; 对于每个对象，基于3D体积数据确定至少包括对象的量词描述的语义描述; 并且在接收到对象的用户选择时，在显示对象的3D图像的同时呈现所选对象的语义描述。 上述解决方案可以以相对准确的方式为被检查行李中的对象创建3D模型，从而为随后的形状特征提取和安全检查提供更好的依据，并减少遗漏因素。

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