Rock particle three-dimensional geometrical morphology information extraction system and method
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A technology of 3D geometry and information extraction, applied in geometric CAD, image data processing, 3D modeling, etc., can solve the problems of low precision of 3D models and inability to obtain 3D geometric shape information, etc., and achieve the effect of high precision
Inactive Publication Date: 2020-08-11
CENT SOUTH UNIV
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[0006] The present invention provides a system and method for extracting three-dimensional geometric shape information of rock particles, which is used to solve the problem that the accuracy of the t
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Embodiment 1
[0048] This implementation discloses a three-dimensional geometric shape information extraction system of rock particles, including:
[0049] Image acquisition device: it is used to take multiple feature images of each face of rock particles at different heights from different heights, so as to obtain all the feature points on the surface of rock particles;
[0050] Image processing device: used to perform three-dimensional modeling based on the multiple feature images to obtain a three-dimensional model of the rock particle, and extract the contour information of the rock particle from the three-dimensional model, and then calculate the Describe the three-dimensional geometric shape information of rock particles.
[0051] In addition, in this embodiment, a method for extracting three-dimensional geometric shape information of rock particles is also disclosed, which specifically includes the following steps:
[0052] Take multiple feature images of each face of the rock parti...
Embodiment 2
[0057] Embodiment 2 is an extended embodiment of Embodiment 1. The difference from Embodiment 1 is that the function and structure of the three-dimensional geometric shape information extraction system of rock particles are expanded, and the steps of the method are refined. , including the following:
[0058] The three-dimensional geometry information extraction system of rock particles in the present invention adopts digital camera, camera box and computer to build rock particle image acquisition system (being the image acquisition device in the present invention), carries out image acquisition, outline extraction and information to rock particles store.
[0059] Such as Figure 1 to Figure 2 As shown, the rock image acquisition system in the present invention is designed with a cube photography box as the shooting frame, the interior of the photography box is provided with a turntable, the front of the photography box is provided with a shooting window, and three cameras ar...
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Abstract
The invention discloses a rock particle three-dimensional geometrical morphology information extraction system and a rock particle three-dimensional geometrical morphology information extraction method. The rock particle three-dimensional geometrical morphology information extraction method comprises the steps of: photographing a plurality of feature images of each surface of a rock particle at different height visual angles from a plurality of visual angles at different heights, so as to obtain all feature points of the surface of the rock particle; performing three-dimensional modeling according to the plurality of feature images of each surface of the rock particle at different height visual angles to obtain a three-dimensional model of the rock particle; and extracting contour information of the rock particle from the three-dimensional model, and further calculating three-dimensional geometrical morphology information of the rock particle according to the contour information. Compared with the prior art, the rock particle three-dimensional geometrical morphology information extraction method and the rock particle three-dimensional geometrical morphology information extraction system have the advantages that the precision of the three-dimensional model of the rock particle acquired by the method and the system is higher, and the local three-dimensional geometrical morphologyinformation of the rock particle can be acquired.
Description
technical field [0001] The invention relates to a three-dimensional geometric shape information extraction device of rock particles and a database construction technology, in particular to a system and method for extracting three-dimensional geometric shape information of rock particles. Background technique [0002] As a granular material that exists widely in nature, rock particles have always been a hotspot in the field of engineering research. Many scholars have carried out a series of related research work from different perspectives. In the field of geotechnical engineering, there have been a large number of physical experiments and numerical simulation studies, and it has been found that the macroscopic physical and mechanical properties of granular materials are strongly correlated with the microstructure. [0003] Early research focused on the use of physical mechanics to test the mechanical properties of granular materials. However, physical experiments are very l...
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