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: 2020-01-21
SHENZHEN UNIV
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Problems solved by technology

[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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[0034] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. It should be noted that relative terms such as "first", "second" and so on may be used to describe various components, but these terms do not limit the components. These terms are only used to distinguish one component from another. For example, without departing from the scope of the present invention, a first component may be called a second component, and a second component may similarly be called a first component. The term "and / or" refers to any one or more combination of related items and described items.

[0035] like Figure 8 , Figure 9 shown; Figure 8 It is a schematic flow chart of the first embodiment of the first embodiment of the three-dimensional virtual particle generation method of the present invention; Figure 9 It is the second schematic flowchart of the first embodiment of the method for gene...

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Abstract

The invention discloses a three-dimensional virtual particle generation method, which comprises the following steps of step S10, obtaining a sectional image of particles, and reconstructing a three-dimensional pixel image corresponding to the particles based on the sectional image; step S20, determining a quality center of the three-dimensional pixel image; step S30, determining a semi-major axisa, a semi-middle axis b and a semi-minor axis c to establish an approximate external ellipsoid corresponding to the three-dimensional pixel image; step S90, calculating the radiuses of the virtual approximate external ellipsoid at different polar angles, and obtaining the radiuses of the virtual particles at different polar angles according to the radiuses of the virtual approximate external ellipsoid at different polar angles and the second compensation radius; and step S100, calculating according to the radiuses of the virtual particles for different polar angles to obtain three-dimensionalrectangular coordinates of surface points of the three-dimensional virtual particles so as to generate the three-dimensional virtual particles. The difference between the generated three-dimensional virtual particles and real particles is small, and the method can be suitable for generation of a large number of particles.

Description

technical field [0001] The invention belongs to the technical field of generating virtual particles, and in particular relates to a method for generating three-dimensional virtual particles. Background technique [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. [0003] Therefore, the prior art needs to be improved. Contents of the invention [0004] The main purpose of the present invention is to propose a method for generating three-dimensional virtual particles, aiming at solving the technical problems me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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
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