Three-dimensional reconstruction method for soil microstructure

Abstract

The invention discloses a three-dimensional reconstruction method for a soil microstructure. The three-dimensional reconstruction method comprises the following steps: I, acquiring a soil sample: acquiring the soil sample on which three-dimensional reconstruction is required to be performed, wherein the soil sample is a cylindrical soil sample; II, hierarchically scanning the soil sample: hierarchically scanning the soil sample from top to bottom by using a scanning electron microscope, wherein the soil sample is divided into a plurality of scanning surfaces from top to bottom, the scanning electron microscope is adopted during scanning of each scanning surface, and each scanning surface is divided into a plurality of regions for scanning, then a plurality of electron microscope scanning images acquired by scanning are spliced to acquire an entire electron microscope scanning image of the scanning surface; III, sorting the electron microscope scanning images; IV, positioning the images; V, performing three-dimensional reconstruction: calling a three-dimensional reconstruction module to process a plurality of entire electron microscope scanning images to acquire a three-dimensional space model of the soil. The method has the advantages of simple steps, rational design, convenience in implementation and good use effect, and the established soil three-dimensional space model can truly reduce the internal structure of the soil.

Description

technical field [0001] The invention relates to a three-dimensional reconstruction method, in particular to a three-dimensional reconstruction method of soil microstructure. Background technique [0002] At present, there are mainly the following three-dimensional reconstruction methods for soil microstructure at home and abroad: first, restore the three-dimensional geometry of soil from two or more two-dimensional images; second, study the two-dimensional Geometric parameters and their distribution rules, and then use the stochastic simulation method to establish a three-dimensional microscopic soil model; third, use CT technology to reconstruct the microscopic structure of the soil. In actual use, the above-mentioned first method can only restore the three-dimensional shape of the soil surface, but cannot establish a three-dimensional model of the internal structure of the soil; the second three-dimensional reconstruction method only randomly simulates the spatial distribu...

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Problems solved by technology

In actual use, the above-mentioned first method can only restore the three-dimensional shape of the soil surface, but cannot establish a three-dimensional model of the internal structure of the soil; the second three-dimensional reconstruction method only randomly simulates the spatial distribution of particles and pores by computer, and cannot restore the real soil microstructure; the cost of the third 3D reconstruction method is high, and the existing CT technolo

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