利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

40 条记录 (耗时 0.014 秒)

    SYSTEM AND METHOD FOR RECONSTRUCTING AN IMAGE BY RECTILINEAR TRAJECTORY SCANNING
    21.
    发明公开
    SYSTEM AND METHOD FOR RECONSTRUCTING AN IMAGE BY RECTILINEAR TRAJECTORY SCANNING 有权
    系统和方法的图像作用的扫描重建直线的运动轨迹

    公开(公告)号：EP1953700A4

    公开(公告)日：2009-08-12

    申请号：EP06791243

    申请日：2006-10-11

    申请人： UNIV TSINGHUA ,  NUCTECH CO LTD

    发明人： ZHANG LI ,  GAO HEWEI ,  CHEN ZHIQIANG ,  KANG KEJUN ,  CHENG JIANPING ,  LI YUANJING ,  LIU YINONG ,  XING YUXIANG ,  ZHAO ZIRAN ,  XIAO YONGSHUN

    IPC分类号： G06T11/00 ,  A61B6/03

    CPC分类号： G01N23/046 ,  A61B6/032 ,  G01N2223/3303 ,  G01N2223/419 ,  G06T11/006 ,  G06T2211/421

    摘要： The present invention discloses a system and method for reconstructing an image by rectilinear trajectory scanning, to prevent the image resolution from reducing due to interpolations in angle direction and detector direction while rearranging data. The system includes: a projection data converter for converting the projection data scanned by rectilinear trajectory into the projection data scanned by quasi-parallel beam, a filter for achieving filtered projection data by convolution of a predetermined convolution function kernel and the projection data scanned by quasi-parallel beam, and backprojection means for reconstructing the image by applying weighted backprojection to the filtered projection data. The system and method of the present invention improves the image reconstruction resolution and reduces the influence of data truncation to the image reconstruction. The present invention has some common advantages of the filtered backprojection in the form of the filtered backprojection, such as fast reconstruction and easy simultaneous operation and acceleration etc.

    COMPUTED TOMOGRAPHY (CT) IMAGE RECONSTRUCTION METHOD AND APPARATUS
    22.
    发明公开
    COMPUTED TOMOGRAPHY (CT) IMAGE RECONSTRUCTION METHOD AND APPARATUS 审中-公开

    公开(公告)号：EP2469472A4

    公开(公告)日：2018-02-14

    申请号：EP11743411

    申请日：2011-05-11

    申请人： UNIV TSINGHUA ,  NUCTECH CO LTD

    发明人： LI LIANG ,  CHEN ZHIQLANG ,  ZHANG LI ,  KANG KEJUN ,  XING YUXIANG ,  ZHAO ZIRAN ,  XIAO YONGSHUN ,  HUANG ZHIFENG

    IPC分类号： G06T11/00

    CPC分类号： G06T11/006 ,  G06T2211/421

    摘要： The invention discloses a method and apparatus for CT image reconstruction. The method for CT image reconstruction of the present invention comprises the steps of: selecting projection data of the same height on a curve having a curvature approximate to that of the scanning circular orbit; implementing weighting processing on the selected projection data; filtering the weighting processed projection data along the horizontal direction; implementing three-dimensional back projection on the filtered projection data along the direction of ray. The apparatus for CT image reconstruction of the present invention comprises a rebinning unit, a weighting unit, a filtering unit and a back projection unit. Employment of the technical solution of the invention can effectively eliminate cone beam artifact under a large cone angle.

    METHOD AND DEVICE FOR IDENTIFYING JEWELLERY AND GEMS
    24.
    发明公开
    METHOD AND DEVICE FOR IDENTIFYING JEWELLERY AND GEMS 审中-公开
    VERFAHREN UND VORRICHTUNG ZUR IDENTIFIZIERUNG VON SCHMUCK UND EDELSTEINEN

    公开(公告)号：EP3088870A4

    公开(公告)日：2017-08-02

    申请号：EP14873997

    申请日：2014-12-25

    申请人： NUCTECH CO LTD ,  UNIV TSINGHUA

    发明人： ZHAO ZIRAN ,  ZHANG LI ,  GENG YINGYING ,  WANG HONGQIU ,  YI YUMIN

    IPC分类号： G01N21/65 ,  G01J3/28 ,  G01J3/44 ,  G01N21/87

    CPC分类号： G01N21/65 ,  G01J3/28 ,  G01J3/44 ,  G01J3/4412 ,  G01N21/87 ,  G01N2201/06113 ,  G01N2201/12

    摘要： Embodiments of the present invention provide gem identification method and apparatus. The method comprises the steps: (a) placing a sample to be detected over a light transmission hole formed on a carrying surface of an object table and emitting, by an optical probe disposed below the carrying surface, an exciting light onto the sample through the light transmission hole and then collecting a Raman scattered light from the sample by the optical probe; (b) acquiring a Raman spectrogram of the sample from the collected Raman scattered light from the sample; and (c) comparing the Raman spectrogram with a reference Raman spectrogram library for gems to identify the sample. The method and apparatus may achieve effective, convenient and accurate inspections of the gems.

    摘要翻译： 本发明的实施例提供了宝石鉴定方法和装置。 该方法包括以下步骤：（a）将要检测的样品放置在形成于物体台的承载表面上的光透射孔上，并通过设置在承载表面下方的光学探针将激发光通过 然后通过光学探针收集来自样品的拉曼散射光; （b）从收集的来自样品的拉曼散射光获得样品的拉曼光谱图; 和（c）将拉曼光谱图与用于宝石的参考拉曼光谱图库比较以鉴定样品。 该方法和装置可以实现对宝石的有效，方便和精确的检查。

    METHODS, SYSTEMS, AND APPARATUSES FOR INSPECTING GOODS
    25.
    发明公开
    METHODS, SYSTEMS, AND APPARATUSES FOR INSPECTING GOODS 审中-公开
    VERFAHREN，SYSTEME UND VORRICHTUNGEN ZUR INSPEKTION VON WAREN

    公开(公告)号：EP3182335A2

    公开(公告)日：2017-06-21

    申请号：EP16191264

    申请日：2016-09-29

    申请人： UNIV TSINGHUA ,  NUCTECH CO LTD

    发明人： LI YUANJING ,  ZHAO ZIRAN ,  LIU YAOHONG ,  WANG QILI ,  LI QIANG ,  GU JIANPING

    IPC分类号： G06K9/48 ,  G01N23/00

    CPC分类号： G06T7/0004 ,  G01N23/04 ,  G01N2223/401 ,  G01N2223/626 ,  G06K9/48 ,  G06T7/0085 ,  G06T7/40 ,  G06T2207/10116

    摘要： The present disclosure provides a method and a system for inspecting goods. The method comprises steps of: obtaining (S21) a transmission image of inspected goods; processing (S22) the transmission image to obtain a suspicious region; extracting (S23) local texture features of the suspicious region and classifying the local texture features of the suspicious region based on a pre-created model to obtain a classification result; extracting (S24) a contour line shape feature of the suspicious region and comparing the contour line shape feature with a pre-created standard template to obtain a comparison result; and determining (S25) that the suspicious region contains a high atomic number matter based on the classification result and the comparison result.

    摘要翻译： 本公开提供了一种用于检查货物的方法和系统。 该方法包括以下步骤：获得（S21）检查货物的传输图像; 处理（S22）传输图像以获得可疑区域; 提取（S23）可疑区域的局部纹理特征，并根据预先创建的模型对可疑区域的局部纹理特征进行分类得到分类结果; 提取（S24）可疑区域的轮廓线形状特征，并将轮廓线形状特征与预先创建的标准模板进行比较，得到比较结果; 以及基于分类结果和比较结果确定（S25）可疑区域包含高原子序数物质。

    NEUTRON DETECTOR COATED WITH BORON AND METHOD FOR MANUFACTURE THEREOF
    27.
    发明公开
    NEUTRON DETECTOR COATED WITH BORON AND METHOD FOR MANUFACTURE THEREOF 审中-公开
    BORN层中子探测器及其制造方法

    公开(公告)号：EP2700980A4

    公开(公告)日：2014-09-03

    申请号：EP12774501

    申请日：2012-04-13

    申请人： NUCTECH CO LTD ,  UNIV TSINGHUA

    发明人： ZHAO ZIRAN ,  WANG YONGQIANG ,  CHEN ZHIQIANG ,  ZHANG QINGJUN ,  LI YUANJING ,  LIU YINONG ,  MAO SHAOJI ,  YAO NAN ,  DONG SHUQIANG

    IPC分类号： G01T3/00

    CPC分类号： G01T3/00 ,  G01T3/008 ,  Y10T29/49117

    摘要： The present invention discloses a boron-coated neutron detector, comprising a cathode tube with a plurality of passages formed therein along its longitudinal direction, the inner wall of each passage being coated with boron material; an electrode wire serving as an anode and arranged longitudinally in each of the passages, the electrode wire adapted to be applied with high voltage; and an insulating end plate to which each end of the cathode tube is fixed, the electrode wire being fixed to the cathode tube via the insulating end plate. Preferably, the cathode tube is formed by jointing a plurality of boron-coated substrates. By arranging in the cathode tube a plurality of passages coated with boron material on their inner walls, the boron-coated neutron detector increases the detection efficiency of the neutron detector, which may reach or even exceed the detection efficiency of the 3 He neutron detector of the same size, and the cost thereof is much cheaper than the 3 He neutron detector.

    摘要翻译： 本发明公开了一种硼涂层中子检测器，包括阴极管，其阴极管沿着其纵向方向形成有多个通道，每个通道的内壁涂覆有硼材料; 用作阳极的电极线，并且纵向地设置在每个通路中，电极线适于施加高电压; 以及绝缘端板，阴极管的各端被固定在该绝缘端板上，电极线通过绝缘端板固定到阴极管。 优选地，通过连接多个硼涂覆的基底来形成阴极管。 通过在阴极管中布置多个在其内壁上涂覆有硼材料的通道，硼涂覆的中子检测器增加了中子检测器的检测效率，这可能达到甚至超过3 He中子探测器的检测效率 相同的尺寸，其成本比3 He中子检测器便宜得多。

    METHOD FOR CALIBRATING RAMAN SPECTROSCOPY DETECTION SYSTEM AUTOMATICALLY AND RAMAN SPECTROSCOPY DETECTION SYSTEM
    28.
    发明公开
    METHOD FOR CALIBRATING RAMAN SPECTROSCOPY DETECTION SYSTEM AUTOMATICALLY AND RAMAN SPECTROSCOPY DETECTION SYSTEM 审中-公开
    方法一拉曼光谱检测系统和拉曼光谱检测系统自动校准

    公开(公告)号：EP2587237A4

    公开(公告)日：2014-07-02

    申请号：EP10853414

    申请日：2010-12-24

    申请人： UNIV TSINGHUA ,  NUCTECH CO LTD

    发明人： CHEN ZHIQIANG ,  ZHANG LI ,  LIU YINONG ,  ZHAO ZIRAN ,  WANG HONGQIU ,  YU DONGMEI ,  GAI HONGFENG ,  LI MINGLIANG

    IPC分类号： G01N21/65 ,  G01J3/28 ,  G01J3/44 ,  G01N21/27

    CPC分类号： G01N21/65 ,  G01J3/28 ,  G01J3/44 ,  G01J3/4412 ,  G01N21/274 ,  G01N21/276

    摘要： The present disclosure relates to a Raman spectrum detection system, which comprises a light source for emitting excitation light that excites a detected object to emit Raman light; an external light path system for irradiating light emitted from the light source on the detected object and collecting the Raman light emitted by the detected object; a light detection device for receiving the Raman light collected by the external light path system and detecting said Raman light to obtain spectrum data thereof; a control device for controlling the excitation light source to provide the excitation light, controlling the light detection device to detect the Raman light, receiving the spectrum data output from the light detection device, and analyzing said spectrum data to identify the detected object; and an automatic calibration device for holding the standard sample and for automatically calibrating the system. The present disclosure also relates to a method for detecting an object using the Raman spectrum detection system, and a method for automatically calibrating the Raman spectrum detection system.

    DEVICE AND METHOD FOR RAY BEAM SCANNING FOR BACK SCATTERING IMAGING
    29.
    发明公开
    DEVICE AND METHOD FOR RAY BEAM SCANNING FOR BACK SCATTERING IMAGING 有权
    VORRICHTUNG UND VERFAHREN ZUR STRAHLENERFASSUNGFÜRRÜCKSTREUUNGSABBILDUNGEN

    公开(公告)号：EP2573551A4

    公开(公告)日：2014-04-23

    申请号：EP11778783

    申请日：2011-04-28

    申请人： NUCTECH CO LTD ,  UNIV TSINGHUA

    发明人： CHEN ZHIQIANG ,  LI YUANJING ,  ZHAO ZIRAN ,  LIU YINONG ,  WU WANLONG ,  ZHANG LI ,  TU CHAO ,  TANG LE ,  JIN YINGKANG ,  CAO SHUO ,  DING GUANGWEI

    IPC分类号： G01N23/04

    CPC分类号： G01N23/203 ,  G01N2223/3301 ,  G01V5/0025 ,  G21K1/043

    摘要： The present invention discloses a scanning device of back-scatter imaging with a radiation beam, comprising: a radiation source; a fixed shield plate and a rotatable shield body disposed between the radiation source and a object to be scanned respectively, wherein the fixed shield plate is stationary with respect to the radiation source and the rotatable shield body is rotatable with respect to the fixed shield plate. The fixed shield plate is provided with a ray passing-through region thereon, which allows for a radiation beam from the radiation source to pass through the fixed shield plate, a ray incidence region and a ray emergence region are arranged on the rotatable shield body respectively, during the rotatable scanning of the rotatable shield body, the ray passing-through region of the fixed shield plate continuously intersects with the ray incidence region and the ray emergence region of the rotatable shield body to generate collimated holes for scanning. The ray passing-through region of the fixed shield plate is a rectilinear slit, the rotatable shield body is a cylinder, and the ray incidence and emergence regions are configured to be a series of small discrete holes disposed along a spiral line respectively. In addition, the present invention discloses a scanning method for back-scatter imaging with a radiation beam.

    摘要翻译： 本发明公开了一种具有辐射束的背散射成像的扫描装置，包括：辐射源; 分别设置在所述辐射源和被扫描物体之间的固定屏蔽板和可旋转屏蔽体，其中所述固定屏蔽板相对于所述辐射源是静止的，并且所述可旋转屏蔽体相对于所述固定屏蔽板可旋转。 固定屏蔽板在其上设有射线通过区域，其允许来自辐射源的辐射束穿过固定屏蔽板，射线入射区域和射线出射区域分别布置在可旋转屏蔽体上 在可旋转的屏蔽体的可旋转扫描期间，固定屏蔽板的光线通过区域与可旋转屏蔽体的射线入射区域和射线出射区域连续相交，以产生用于扫描的准直孔。 固定屏蔽板的光线通过区域是直线狭缝，可旋转屏蔽体是圆柱体，射线入射区域和出射区域分别被构造成沿着螺旋线设置的一系列小的分立孔。 此外，本发明公开了一种利用辐射束进行背散射成像的扫描方法。