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Method for diagnosing internal damage of cereal grains based on micro-CT (computed tomography) technology

A CT technology, a grain technology, is applied in the field of diagnosing internal grain damage based on micro-CT technology, which can solve problems such as heavy workload, restricted application, and inability to truly and comprehensively characterize microstructure feature information, so as to improve accuracy and preserve primitive effect

Inactive Publication Date: 2015-07-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method needs to break the shell of the grain in the sample preparation process, which requires a lot of work, time-consuming and laborious; and this technology can only obtain the projection image of the grain at a specific angle, and cannot restore the actual crack morphology inside the grain, and cannot truly and comprehensively characterize the grain. The characteristic information of the microstructure in three-dimensional space after damage restricts its application in the diagnosis of internal damage in grains

Method used

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  • Method for diagnosing internal damage of cereal grains based on micro-CT (computed tomography) technology
  • Method for diagnosing internal damage of cereal grains based on micro-CT (computed tomography) technology
  • Method for diagnosing internal damage of cereal grains based on micro-CT (computed tomography) technology

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Embodiment Construction

[0028] The following rice is taken as an example in conjunction with the accompanying drawings to further illustrate the present invention, but the protection scope of the present invention is not limited thereto.

[0029] The micro-focus CT equipment that adopts in the specific embodiment of the present invention refers to figure 1 . use figure 1 The shown micro-focus CT equipment collects tomographic images of rice grains, which includes an X-ray tube 1 with a maximum voltage of 90 kvp and a maximum current of 200 μA. The rice grains are placed in a sample tube 3 with a diameter of 9 mm and a detector 4. The resolution is 4 μm, and the X-ray energy spectrum after passing through the collimator and filter 2 can be collected and transmitted to the image workstation 6, and the automatic sample changer 5 can place the sample tubes into the cabin one by one by itself. The collimator, filter 2, sample tube 3 and detector 4 are integrated in a closed steel structure cabin.

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Abstract

The invention relates to a method for diagnosing internal damage of cereal grains based on a micro-CT (computed tomography) technology. Micro-CT equipment is utilized for performing X-ray micro-CT scanning on unhulled cereal grains, a profile scanning sequence image of a damaged grain is obtained, threshold segmentation is utilized for processing the profile scanning sequence image, three-dimensional images of a grain body and cracks are reconstructed respectively, calculation is performed with a volumetric reconstruction method to obtain the volume of a grain body target and the volume of the cracks, the internal damage degree of the grain is measured based on the volume of the grain body target and the volume of the cracks, the three-dimensional image of the cereal grain body is subjected to multi-angle profile analysis and crack three-dimensional image analysis, a distribution situation of the cracks in the cereal grain is visually represented, and the number and sectional area of cracks are quantified. Due to the adoption of the technical scheme, a structure for analyzing the internal damage degree of the cereal grains is obtained, a three-dimensional internal result image of a sample is further obtained, and the internal damage degree of the cereal grains can be quickly and accurately identified without removing cereal grain hulls and changing shapes and internal structures of the cereal grains.

Description

technical field [0001] The invention relates to an evaluation method for diagnosing the internal damage degree of grains based on micro-focus CT, in particular to a method for diagnosing internal damages of grains based on micro-CT technology. Background technique [0002] At present, the diagnosis of grain internal damage is mainly based on experimental qualitative research or physical experimental analysis methods such as stereo microscope. The existing method of diagnosing grain internal damage through a stereo microscope can detect the distribution of cracks on the grain surface, and analyze the degree of grain damage through grain projection images. This method needs to break the shell of the grain in the sample preparation process, which requires a lot of work, time-consuming and laborious; and this technology can only obtain the projection image of the grain at a specific angle, and cannot restore the actual crack morphology inside the grain, and cannot truly and comp...

Claims

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Application Information

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IPC IPC(8): G01N23/04
Inventor 周静赵湛李萍萍
Owner JIANGSU UNIV
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