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156 条记录 (耗时 0.022 秒)

    Method and device for inspection of liquid articles
    61.
    发明授权
    Method and device for inspection of liquid articles 有权
    液体制品检验方法及装置

    公开(公告)号：US09121811B2

    公开(公告)日：2015-09-01

    申请号：US13946498

    申请日：2013-07-19

    申请人： Tsinghua University ,  Nuctech Company Limited

    发明人： Zhiqiang Chen ,  Li Zhang ,  Xuewu Wang ,  Haifeng Hu ,  Hongxin Wu ,  Yuanjing Li ,  Yinong Liu ,  Ziran Zhao ,  Yuxiang Xing ,  Hu Tang ,  Yumin Yi ,  Jinyu Zhang

    IPC分类号： A61B6/00 ,  G01N23/10 ,  G01N23/04 ,  G01V5/00 ,  G01N1/02 ,  A61B6/02

    CPC分类号： G01N23/10 ,  A61B6/027 ,  G01N23/046 ,  G01N2001/022 ,  G01N2223/419 ,  G01N2223/423 ,  G01N2223/637 ,  G01N2223/639 ,  G01V5/00

    摘要： Disclosed are a method and a device for security-inspection of liquid articles with dual-energy CT imaging. The method comprises the steps of obtaining one or more CT images including physical attributes of liquid article to be inspected by CT scanning and a dual-energy reconstruction method; acquiring the physical attributes of each liquid article from the CT image; and determining whether there are drugs concealed in the inspected liquid article based on the difference between the acquired physical attributes and reference physical attributes of the inspected liquid article. The CT scanning can be implemented by a normal CT scanning technique, or a spiral CT scanning technique. In the normal CT scanning technique, the scan position can be preset, or set by the operator with a DR image, or set by automatic analysis of the DR image.

    摘要翻译： 公开了一种用于双能CT成像的液体物品的安全检查方法和装置。 该方法包括以下步骤：通过CT扫描获得包括待检查的液体物品的物理属性的一个或多个CT图像和双能量重建方法; 从CT图像获取每个液体物品的物理属性; 并且基于被检查的液体制品的所获取的物理属性和参考物理属性之间的差异来确定在被检查的液体制品中是否存在隐藏的药物。 CT扫描可以通过正常的CT扫描技术或螺旋CT扫描技术来实现。 在正常的CT扫描技术中，扫描位置可以由操作员预先设置，或者通过DR图像设置，或者通过DR图像的自动分析设置。

    Three-dimensional data processing and recognizing method
    62.
    发明授权
    Three-dimensional data processing and recognizing method 有权
    三维数据处理和识别方法

    公开(公告)号：US09111128B2

    公开(公告)日：2015-08-18

    申请号：US14136426

    申请日：2013-12-20

    申请人： NUCTECH COMPANY LIMITED ,  TSINGHUA UNIVERSITY

    发明人： Mingliang Li ,  Zhiqiang Chen ,  Yuanjing Li ,  Li Zhang

    IPC分类号： G06K9/00

    CPC分类号： G06K9/00201 ,  G06K9/00771 ,  G06K2209/09

    摘要： A three-dimensional data processing and recognizing method including scanning and re-constructing objects to be detected so as to obtain three-dimensional data for recognition of the objects to be detected; extracting data matching to features from the three-dimensional data, so that the extracted data constitutes an interested target; with respect to the data matching to features, merging and classifying adjacent data points as one group, to form an image of the merged interested target; recognizing a cross section of the interested target; cutting the interested targets by a perpendicular plane which passes through a central point of the cross section and is perpendicular to it, in order to obtain a graph; and recognizing shape of the interested targets based on a property of the graph.

    摘要翻译： 一种三维数据处理和识别方法，包括扫描和重新构造待检测对象，以获得用于识别待检测对象的三维数据; 从三维数据提取与特征匹配的数据，使提取的数据构成感兴趣的目标; 对于与特征匹配的数据，将相邻数据点合并和分类为一组，以形成合并的目标的图像; 认识到有兴趣的目标的横截面; 通过穿过横截面的中心点并垂直于其的垂直平面切割感兴趣的目标，以获得图形; 并基于图的属性识别感兴趣的目标的形状。

    Data processing method and device
    68.
    发明授权
    Data processing method and device 有权

    公开(公告)号：US10955572B2

    公开(公告)日：2021-03-23

    申请号：US16137547

    申请日：2018-09-21

    申请人： Tsinghua University ,  Nuctech Company Limited

    发明人： Li Zhang ,  Zhiqiang Chen ,  Sen Wang ,  Xiaofei Xu ,  Yuanjing Li ,  Xin Jin

    IPC分类号： G01T7/00 ,  G01T1/16 ,  G01T1/36

    摘要： The present disclosure relates to a data processing method and device. The data processing method comprises steps of: performing detector response calibration based on a detector response obtained by an incidence of rays with known energy into a detector to obtain a detector response model; obtaining a photon counting model of the detector between incident energy spectrum data of the detector and detected energy spectrum data of the detector based on the detector response model; and performing a deconvolution operation on counts of photons in respective energy regions in the detected energy spectrum data of the detector based on the photon counting model of the detector, to obtain real counts of photons in respective energy regions in the incident energy spectrum data of the detector.