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Energy spectrum modulator, method and apparatus for discriminating material and image processing method

一种图像处理、能谱的技术，应用在分析材料、测量装置、X射线设备等方向，能够解决不能识别被检物体材料等问题，达到提高探测效果和探测精度、大动态范围、提高正确率的效果

Active Publication Date: 2007-11-21
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In this method, when the X-rays of the two energy spectra interact with the object to be inspected, as the thickness of the object to be inspected gradually increases, the difference between the two energy spectra penetrating the object to be inspected will become smaller and smaller and converge rapidly. will not be able to identify the material of the object being inspected

Method used

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  • Energy spectrum modulator, method and apparatus for discriminating material and image processing method
  • Energy spectrum modulator, method and apparatus for discriminating material and image processing method
  • Energy spectrum modulator, method and apparatus for discriminating material and image processing method

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Embodiment Construction

[0043] The embodiments of the present invention are described in detail below with reference to the drawings.

[0044] Fig. 1 is a schematic diagram of the structure of a material identification system according to an embodiment of the present invention.

[0045] As shown in Figure 1, the material identification system according to the embodiment of the present invention includes a radio frequency linear accelerator 1, an energy spectrum modulation device 2, a synchronization control part 4 connected to the radio frequency linear accelerator 1 and the energy spectrum modulation device 2 through a line 3, and a first The collimator 6A, the second collimator 6B, the third collimator 6C, the control part 9 connected to the energy spectrum modulation device 2 through the line 10, the detector 8 connected to the control part 9 through the line 11, and the line 12 The material recognition and image processing part 13 connected to the detector 8.

[0046] In this embodiment, the radio freq...

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PUM

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Abstract

An energy-spectrum modulation device used for identifying material of goods in large container consists of the first energy-spectrum component used to carry out energy-spectrum modulation on the first ray with the first energy-spectrum, the second energy-spectrum component coupled with the first one and used to carry out energy-spectrum modulation on the second ray with the second energy-spectrum different from the first one.

Description

Technical field [0001] The present invention relates to radiographic imaging inspection of large objects, in particular to an energy spectrum modulation device, a material identification method and equipment, and an image processing method, which can use radiation of different energy to identify materials in large and medium-sized objects such as shipping and air containers. material. technical background [0002] Existing cargo inspection systems that use radiation imaging generally allow single-energy rays to interact with the inspected object, and then detect the rays that penetrate the inspected object to obtain an image. This system can reflect changes in the shape and mass thickness of the object to be inspected, but it cannot identify the material. [0003] The dual-energy detection method to realize the distinction of object material properties was proposed a long time ago, such as US Patent US5,044,002, and has been widely used in various fields in the low-energy range, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/087G01N23/04G01N23/08G21K1/00A61B6/00G01V5/00H05G1/26H05G1/46
CPCG01N23/087G01N2223/206G01N2223/313G01N2223/423G01N2223/639G01V5/20
Inventor 王学武刘以农陈志强刘耀红钟华强张东生陈玉梅高峰
Owner TSINGHUA UNIV
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