Method for processing images of transmissive electron microscope in high resolution for crystallite of coke

A technology of transmission electron microscopy and processing methods, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., and can solve the problem that the clarity and sharpness of coke microcrystal images are not enough to support

Inactive Publication Date: 2006-12-06
BAOSHAN IRON & STEEL CO LTD +1
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Problems solved by technology

like figure 1 As shown, it is a typical original HRTEM image of coke, obviously figure 1 The information shown in can not meet the above requirements. This is because the diameter of the graphite layer in coke is very small, that is, the size of the microcrystalline unit is very small, usually only about a few nanometers, which is limited to the resolution that can be achieved by the transmission electron m

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  • Method for processing images of transmissive electron microscope in high resolution for crystallite of coke
  • Method for processing images of transmissive electron microscope in high resolution for crystallite of coke

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Embodiment Construction

[0020] The following takes the original HRTEM image of the Qianjiaying Jiao sample as an example, combined with figure 2 , illustrating a preferred embodiment of the present invention.

[0021] The original HRTEM image of the Qianjiaying Jiao sample is a 256-level grayscale image, and each pixel that constitutes the image is assigned a value from 0 to 255, indicating its grayscale level.

[0022] Such as figure 2 As shown, the processing method of the original HRTEM image of the Qianjiaying Jiao sample includes the following steps:

[0023] Step 1. Image filtering: remove the impurity signals in the image while highlighting the required object information in the image; the image filtering process also includes the following three steps:

[0024] Step 11. Perform two-dimensional fast Fourier transform (2D-FFT) on the original HRTEM image a of the Qianjiaying coke sample, and convert the original real-domain image a into a frequency-domain image b;

[0025] The frequency do...

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Abstract

The invention discloses a method of dealing with coke microlite distinguish transmission electricity glass image, including the steps of: 1.imaging filtration, making two-dimensional fast Fourier to the primitive coke HRTEM picture, filtering frequency chart in range of certain frequency, again carrying on anti-fast Fourier to transform for the substantive chart; 2. imaging division, in 0-255 definite values, and filtering division substantive chart for the black and white two values chart. 3. Striping skeleton: Transforming stripe the in black and white two values chart into the single picture element stripe. This invention provides a method of processing the coke microlite high distinguishes the radio mirror picture, its may obtain the primitive coke HRTEM picture transformation the clear graphite microlite stripe chart, and may be directly used to calculate graphite microlite size and slice space parameter, and so on.

Description

technical field [0001] The invention relates to a processing method for high-resolution transmission electron microscope images of coke microcrystals. Background technique [0002] As a lattice imaging technique, high-resolution transmission electron microscopy (HRTEM) has a resolution of 0.14nm and can directly observe the microstructure of crystals. On the one hand, it can provide the most direct evidence for the crystal structure at the atomic level. On the other hand, , if it is a regular crystal, the structural parameters of the crystal can be directly calculated through the HRTEM lattice image, so that the macroscopic properties of the substance can be theoretically explained, and the relationship between the microscopic structure and the macroscopic properties of the substance can be revealed. [0003] Coke is obtained from coal through coking. In the metallurgical industry, especially in the field of ironmaking, coke has a very important application. The research on...

Claims

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Application Information

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IPC IPC(8): G06K9/54
Inventor 吴信慈杨俊和胡德生汤国华张群姜伟忠沈风雷
Owner BAOSHAN IRON & STEEL CO LTD
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