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    3-dimensional model creation methods and apparatuses
    11.
    发明授权
    3-dimensional model creation methods and apparatuses 有权
    三维模型创建方法和装置

    公开(公告)号：US09557436B2

    公开(公告)日：2017-01-31

    申请号：US14138447

    申请日：2013-12-23

    Applicant: Tsinghua University ,  Nuctech Company Limited

    Inventor： Zhiqiang Chen ,  Li Zhang ,  Ziran Zhao ,  Qiang Li ,  Jianping Gu ,  Qingping Huang

    IPC: G06T17/00 ,  G01V5/00 ,  G06T7/00 ,  G06K9/00

    CPC classification number: G01V5/005 ,  G06K9/00214 ,  G06K2209/09 ,  G06T7/11 ,  G06T7/187 ,  G06T17/00 ,  G06T2207/10081 ,  G06T2207/30112

    Abstract: Disclosed are methods and apparatuses for creating a 3-Dimensional model for objects in an inspected luggage in a CT system. The method includes acquiring slice data of the luggage with the CT system; interpolating the slice data to generate 3D volume data of the luggage; performing unsupervised segmentation on the 3D volume data of the luggage to obtain a plurality of segmental regions; performing isosurface extraction on the plurality of segmental regions to obtain corresponding isosurfaces; and performing 3D surface segmentation on the isosurfaces to form a 3D model for the objects in the luggage. 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: 公开了用于在CT系统中检查的行李中的物体创建三维模型的方法和装置。 该方法包括采用CT系统获取行李的切片数据; 内插切片数据以生成行李的3D体积数据; 对行李的3D体积数据执行无监督分割以获得多个分段区域; 在多个分段区域进行等值面提取以获得相应的等值面; 并在等面上执行3D表面分割，以形成行李中物体的3D模型。 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。

    Raman spectrum measuring method for drug inspection
    12.
    发明授权
    Raman spectrum measuring method for drug inspection 有权
    用于药物检查的拉曼光谱测量方法

    公开(公告)号：US09250180B2

    公开(公告)日：2016-02-02

    申请号：US14495233

    申请日：2014-09-24

    Applicant: Nuctech Company Limited ,  Tsinghua University

    Inventor： Zhiqiang Chen ,  Li Zhang ,  Jianhong Zhang ,  Hongqiu Wang ,  Ziran Zhao ,  Yumin Yi ,  Jianping Gu ,  Qingping Huang

    IPC: G01J3/44 ,  G01N21/47 ,  G01N33/15 ,  G01N21/65

    CPC classification number: G01N21/47 ,  G01J3/44 ,  G01N21/65 ,  G01N21/658 ,  G01N33/15

    Abstract: A raman spectrum measuring method for drug inspection is provided, comprising: measuring raman spectrum of a sample to be inspected to acquire an original raman spectrum curve of the sample; determining whether the original raman spectrum curve has a characterizing portion, and if not, measuring a mixture of the sample and an enhancing agent to acquire an enhanced raman spectrum curve of the sample; and if the original raman spectrum curve of the sample to be inspected has a characterizing portion, comparing the original raman spectrum curve of the sample with data in an original raman spectrum database of a drug to determine whether the sample contains the drug, otherwise, comparing the enhanced raman spectrum curve of the sample with data in an enhanced raman spectrum database of the drug to determine whether the sample to be inspected contains the drug.

    Abstract translation: 提供了用于药物检查的拉曼光谱测量方法，包括：测量被检样品的拉曼光谱以获得样品的原始拉曼光谱曲线; 确定原始拉曼光谱曲线是否具有特征部分，如果不是，则测量样品和增强剂的混合物以获得样品的增强的拉曼光谱曲线; 如果要检查的样本的原始拉曼光谱曲线具有特征部分，则将样品的原始拉曼光谱曲线与药物的原始拉曼光谱数据库中的数据进行比较，以确定样品是否含有药物，否则比较 增强的拉曼光谱曲线的样品与增强的拉曼光谱数据库中的数据，以确定待检样品是否含有药物。

    VEHICULAR RADIATION INSPECTION SYSTEM
    13.
    发明申请
    VEHICULAR RADIATION INSPECTION SYSTEM 有权
    车辆辐射检查系统

    公开(公告)号：US20150192531A1

    公开(公告)日：2015-07-09

    申请号：US14412516

    申请日：2013-07-02

    Applicant: Nuctech Company Limited ,  Tsinghua University

    Inventor： Jianmin Li ,  Yinong Liu ,  Yulan Li ,  Chunguang Zong ,  Hui Gong ,  Qingping Huang ,  Weifeng Yu

    IPC: G01N23/10 ,  G01V5/00

    CPC classification number: G01N23/10 ,  G01N23/04 ,  G01N2223/301 ,  G01N2223/308 ,  G01V5/0016 ,  G01V5/0066

    Abstract: The present invention discloses a vehicular radiation inspection system comprising a mobile vehicle body, a detection arm, a radiation source and a detector. The vehicular radiation inspection system further comprises a following mechanism separated from the detection arm. The following mechanism contains radiation protection material, and the following mechanism follows the detection arm to move in a non-contact manner during inspection of the inspected object, so as to prevent radiation leakage. In the present invention, it does not need to infuse radiation protection material having a high density, such as lead, into the detection arm. Therefore, it can effectively decrease the weight of the detection arm, and it does not need to provide a balance counterweight on the mobile vehicle body on which the detection arm is carried, thereby effectively solving the problem that the vehicular radiation inspection system has an excessively large mass. Meanwhile, in the present invention, the moving process of the following mechanism is accurately controlled, so as to prevent the following mechanism from hitting the detection arm.

    Abstract translation: 本发明公开了一种包括移动车身，检测臂，辐射源和检测器的车辆辐射检查系统。 车辆辐射检查系统还包括与检测臂分离的跟随机构。 以下机构包含辐射防护材料，并且在检查被检查物体的检查期间，跟随检测臂的机构以非接触的方式移动，以防止辐射泄漏。 在本发明中，不需要将诸如铅的高密度的辐射防护材料注入到检测臂中。 因此，能够有效地降低检测臂的重量，并且不需要在携带检测臂的移动体上提供平衡配重，从而有效地解决了车辆用辐射检查系统过度的问题 大量。 同时，在本发明中，精确地控制以下机构的移动过程，以防止以下机构撞击检测臂。

    Raman spectroscopy method of measuring melamine contents in dairy products having different matrixes
    14.
    发明授权
    Raman spectroscopy method of measuring melamine contents in dairy products having different matrixes 有权
    测量具有不同基质的乳制品中三聚氰胺含量的拉曼光谱法

    公开(公告)号：US08891081B1

    公开(公告)日：2014-11-18

    申请号：US14145454

    申请日：2013-12-31

    Applicant: Nuctech Company Limited ,  Tsinghua University

    Inventor： Zhiqiang Chen ,  Li Zhang ,  Jianhong Zhang ,  Hongqui Wang ,  Ziran Zhao ,  Jianping Gu ,  Zhiming Wang ,  Qingping Huang ,  Yumin Yi

    IPC: G01J3/44 ,  G01N21/65

    CPC classification number: G01N21/65

    Abstract: A raman spectroscopy method of measuring melamine contents in dairy products having different matrixes. The method includes: (a) establishing a database of characteristic curves of dairy products having different matrixes; (b) taking several copies of the dairy products having one certain unknown matrix and adding melamine standard solutions having different concentrations therein, to obtain a series of dairy product samples in which the relative concentrations of the melamine are known; (c) performing raman spectrum testing analysis and obtaining corresponding characteristic peak intensities to obtain a slope of the characteristic curve showing variation of the characteristic peak intensities with the relative concentrations of the melamine; (d) searching the database of step (a) using the slope of the characteristic curve of the dairy product samples to find a matching characteristic curve, and (e) calculating concentration of melamine in the dairy products by using the matched characteristic curve and the characteristic peak intensity.

    Abstract translation: 测量具有不同基质的乳制品中三聚氰胺含量的拉曼光谱法。 该方法包括：（a）建立具有不同矩阵的乳制品特征曲线数据库; （b）取几份具有一定未知基质的乳制品，并加入其中浓度不同的三聚氰胺标准溶液，以获得其中已知三聚氰胺的相对浓度的一系列乳制品样品; （c）进行拉曼光谱测试分析并获得相应的特征峰强度，以获得特征曲线的斜率，显示特征峰强度与三聚氰胺的相对浓度的变化; （d）使用乳制品样品的特征曲线的斜率来搜索步骤（a）的数据库，以找到匹配的特征曲线，以及（e）通过使用匹配的特征曲线计算乳制品中三聚氰胺的浓度， 特征峰强度。

    Intelligent explosion-proof table
    18.
    发明授权
    Intelligent explosion-proof table 有权

    公开(公告)号：US11454483B2

    公开(公告)日：2022-09-27

    申请号：US16214677

    申请日：2018-12-10

    Applicant: Nuctech Company Limited ,  TSINGHUA UNIVERSITY

    Inventor： Li Zhang ,  Gang Peng ,  Qingping Huang ,  Jianqing Dou ,  Yandi Wang ,  Kun Yang

    IPC: F42D5/04 ,  G06Q50/26 ,  B64F1/36

    Abstract: The present disclosure provides an intelligent explosion-proof table, including a worktable, an explosion-proof box; the worktable has a window passing through in the vertical direction. The explosion-proof box with an open top is arranged under the window of the worktable. A lifting plate which can be moved up and down and a support mechanism for driving the lifting plate to be lifted are provided inside the explosion-proof box. The lifting plate is used for placing a danger source and matches with the window and is capable of being raised into the window.

    Radiography systems based on distributed ray source
    20.
    发明授权
    Radiography systems based on distributed ray source 有权

    公开(公告)号：US10371648B2

    公开(公告)日：2019-08-06

    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: G01N23/00 ,  G01N23/04 ,  G01N23/046 ,  G01V5/00

    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.

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