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Loess microstructure image processing method

A processing method and microstructure technology, which are applied in the processing field of loess microstructure images to achieve the effect of obvious enhancement effect, obvious image segmentation effect, and convenient post-measurement and analysis.

Inactive Publication Date: 2019-08-23
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in general, there are still some difficulties in quantitative research on microstructure, both technically and theoretically, such as information extraction technical problems, structural changes of soil under the action of external forces or other factors, size effects of microstructure research, Establishment of micromechanical models, etc.

Method used

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  • Loess microstructure image processing method

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Experimental program
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Embodiment Construction

[0092] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0093] Step 1: Loess Microstructure Image Acquisition

[0094] (1) Test equipment

[0095] The instrument uses a KYKY-2800B scanning electron microscope, such as figure 1 shown. The KYKY-2800B scanning electron microscope is an optical instrument for observing the microstructure of the sample. Through the interaction between the electron beam and the sample, it can generate a magnified topography image of the sample surface, and build up the topography image of the sample according to the scanned time sequence. . The microstructure of loess that can be observed under this microscope includes soil particle shape, pore characteristics, contact relationship and cementation type, etc. The specific technical indicators are as follows:

[0096] (1) Resolution: 4.5nm (tungsten cathode)

[0097] (2) Magnification: 15X~250000X

[0098] (3) Acceleration vo...

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Abstract

The invention discloses a loess microstructure image processing method which comprises the following steps: step 1, preparing a loess sample, and acquiring an image of the loess sample; step 2, preprocessing the image; step 3, enhancing the image; 4, segmenting the image; and step 5, performing morphological processing on the image. According to the method, the enhancement effect is obvious through the comprehensive use of the average filter and the Laplacian filter. The gray level of the microstructure image can be expanded through a histeq function, and later measurement and analysis are facilitated; the image segmentation effect is obvious by using the maximum entropy algorithm of the mathematical statistics capability of the information amount.

Description

technical field [0001] The invention relates to a method for processing loess microstructure images. Background technique [0002] Natural soil is a discontinuous and heterogeneous structural material, and its macroscopic physical and mechanical properties are affected and controlled by the structure of the soil. Therefore, the understanding and research of the structure of soil is the foundation and core of modern soil mechanics . As an inherent characteristic of soil, structural properties affect many engineering properties of soil, such as compressibility, shear strength, permeability, etc., through its own change rules, which makes it more difficult to grasp the changes in soil properties in engineering practice. The specific method of obtaining high-definition soil sample microstructure images, extracting reasonable microstructure parameters and quantifying parameters is the premise of studying soil structure. Therefore, it can be seen that it is of great significance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/40G06T7/00G06T7/155
CPCG06T7/155G06T5/40G06T7/0002G06T5/00G06T5/70
Inventor 吴志坚赵多银陈大伟梁超张丹
Owner NANJING UNIV OF TECH
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