Three-dimensional virtual particle generation method
A three-dimensional virtual and granular technology, applied in the direction of instrumentation, calculation, image data processing, etc., to achieve the effect of small difference
Active Publication Date: 2022-07-26
SHENZHEN UNIV
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[0002] At present, generating three-dimensional virtual particles with geometric characteristics similar to real particles is the basis and premise of simulating the mechanical behavior of particles with the method of discrete elements. The existing technology uses ball binding to approximate irregular particles, although it can reduce the stored data information , but there are obvious differences between the approximate particle bound by the ball and the real particle in terms of geometry and contact interaction
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[0035] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. It should be noted that related terms such as "first", "second", etc. may be used to describe various components, but these terms do not limit the component. These terms are only used to distinguish one component from another. For example, a first component could be termed a second component, and a second component could similarly be termed a first component, without departing from the scope of the present invention. The term "and / or" refers to a combination of any one or more of the associated and described items.
[0036] like Figure 8 , Figure 9 shown; Figure 8 It is a first schematic flow chart of the first embodiment of the method for generating three-dimensional virtual particles according to the present invention; Figure 9 It is a second schematic flowchart of the first embodiment of the method for...
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The invention discloses a method for generating three-dimensional virtual particles, comprising the following steps: step S10, obtaining a tomographic image of the particle, and reconstructing a three-dimensional pixel image corresponding to the particle based on the tomographic image; step S20, determining the mass center of the three-dimensional pixel image; Step S30, determine the semi-major axis a, the semi-central axis b and the semi-minor axis c to establish an approximate circumscribed ellipsoid corresponding to the three-dimensional pixel image; Step S90, calculate the radius of the virtual approximate circumscribed ellipsoid at different polar angles, according to the virtual approximate circumscribed ellipsoid. Approximate the radius of the circumscribed ellipsoid at different polar angles and the second compensation radius to obtain the radius of the virtual particle for different polar angles; step S100, calculate the three-dimensional rectangular coordinates of the surface point of the three-dimensional virtual particle according to the radius of the virtual particle for different polar angles , for 3D virtual particle generation. In the present invention, the difference between the generated three-dimensional virtual particles and the real particles is small, and the generation of a larger number of particles can be applied.
Description
technical field [0001] The invention belongs to the technical field of virtual particle generation, and in particular relates to a three-dimensional virtual particle generation method. Background technique [0002] At present, generating 3D virtual particles with geometric characteristics similar to real particles is the basis and premise of simulating the mechanical behavior of particles by discrete element method. The existing technology uses ball binding to approximate irregular particles, although it can reduce the stored data information. , but the approximated particles bound with spheres are significantly different from the real particles in terms of geometry and contact interactions. [0003] Therefore, the existing technology needs to be improved. SUMMARY OF THE INVENTION [0004] The main purpose of the present invention is to propose a method for generating three-dimensional virtual particles, which aims to solve the technical problems mentioned in the backgrou...
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IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 苏栋雷国平王雪涛庞小朝江月琴
Owner SHENZHEN UNIV