Method and device for detecting a given material in an object using electromagnetic rays
    2.
    发明授权
    Method and device for detecting a given material in an object using electromagnetic rays 有权
    用于使用电磁射线检测物体中的给定材料的方法和装置

    公开(公告)号:US07020241B2

    公开(公告)日:2006-03-28

    申请号:US10362929

    申请日:2002-09-21

    IPC分类号: G01N23/04 G01N23/06 G01B15/02

    CPC分类号: G01V5/0016

    摘要: A method for the detection of a specific material in an object (1), especially in a piece of luggage, using electromagnetic beams, whereby the intensities of non-absorbed beams from at least three beam planes (5.1–5.2) in corresponding detector arrays (4.1–4.5) are measured and evaluated, using the following steps according to the invention:1. generating an at least two-dimensional picture of the object (1) from the measured intensity values;2. selecting one of the spatial regions displayed in the picture as a basis of the value of a material value, which is determined from intensity measurements, for examination;3. determining at least one spatial-geometric value in the region to the examined from positional data of a two-dimensional picture and from intensity values using a stored value of a specific, absorption-influenced value of a suspected material.4. determining, in addition, the corresponding spatial-geometric value solely from three-dimensional geometric values, which are determined from measured intensity values; and5. comparing, directly or indirectly, values of the spatial-geometric values determined in steps 3 and 4, or values derived therefrom, in order to determine if the suspected material is actually present.

    摘要翻译: 一种用于使用电磁束检测物体(1)中特定材料(特别是一件行李)中的特定材料的方法,由此在相应的检测器阵列中来自至少三个光束平面(5.1-5.2)的未吸收光束的强度 (4.1-4.5),根据本发明使用以下步骤进行测量和评估:1.从测量的强度值生成对象(1)的至少二维图像; 2.选择图像中显示的空间区域中的一个作为从强度测量确定的材料值的值的基础进行检查; 3.使用可疑材料的特定吸收影响值的存储值,从二维图像的位置数据和强度值确定区域中至少一个空间几何值。 另外确定相应的空间几何值,仅由三维几何值,其由测量的强度值确定; 以及5.直接或间接地比较步骤3和4中确定的空间 - 几何值的值或由其导出的值,以便确定疑似材料是否实际存在。