An orderly processing method for disordered point cloud in optical scanning of rock section
A technology of optical scanning and processing methods, applied in image data processing, instruments, calculations, etc., can solve problems such as the inability to use disordered point clouds and calculate rock section morphology features
Active Publication Date: 2020-12-15
HEBEI UNIV OF TECH
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[0004] The purpose of the present invention is to provide a method for orderly processing disordered point clouds of rock sections with simple algorithms, reliable results and the ability to select processing areas, so as to solve the problem that the prior art cannot use disordered point clouds to calculate rock section morphology features question
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[0045] The present invention will be further described below in conjunction with the examples, but it should not be understood that the scope of the subject of the present invention is limited to the following examples. Without departing from the above-mentioned technical ideas of the present invention, various replacements and changes made according to common technical knowledge and conventional means in this field shall be included in the protection scope of the present invention.
[0046] This embodiment discloses a method for orderly processing disordered point clouds in optical scanning of rock sections, see figure 1 , the method includes the following steps:
[0047] 1) Use an optical scanner to optically scan the fracture surface of the rock to obtain the x, y, and z coordinates of a series of points on the fracture surface of the rock in the coordinate system o-xyz. Export the scanned data to obtain the point cloud file of the rock fracture surface. Schematic diagram o...
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The invention discloses a rock fracture surface optical scanning unordered point cloud ordering processing method. The method comprises the steps that a rock fracture surface point cloud file is acquired, point cloud length is calculated, deviation is adjusted, coordinates are readjusted, a calculation range is selected, and linear interpolation is performed to obtain z coordinates of a sampling point. Through the method, an ordering processing region can be selected, ordered point clouds can be arranged according to a coordinate order, and subsequent fracture surface parameters can be directly calculated without the need for readjustment. After the method is adopted to perform unordered point cloud ordering processing, rock fracture surface morphology is not changed, and the method has high practicability in rock joint surface morphological and mechanical research.
Description
technical field [0001] The invention relates to the field of rock fracture mechanics, in particular to a method for orderly processing disordered point clouds through optical scanning of rock sections. Background technique [0002] The rock is damaged under the action of tension, compression and shear to form the rock fracture surface. The morphology of the rock fracture surface has an important influence on the strength and deformation characteristics of the joint surface, which is a hot research topic among scholars at present. At present, the calculation of the fracture surface morphology features mainly focuses on the three-dimensional average dip angle of the fracture surface, roughness parameters, apparent anisotropy, average gradient distortion parameters, JRC and fractal characteristics. The basic principle is to scan the rock section with an optical scanner to obtain the x, y, z coordinates of a series of points on the surface of the fracture surface, that is, the ...
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IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 黄达朱谭谭岑夺丰顾东明宋宜祥
Owner HEBEI UNIV OF TECH