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Ball, cylinder and elliptic cone model recognition method based on point cloud data processing technology

A point cloud data, elliptical cone technology, applied in image data processing, details involving 3D image data, instruments, etc., can solve problems such as low efficiency, time-consuming measurement of elliptical cones, and high requirements for initial preparation of measurement equipment. Achieve the effect of fast recognition speed and high accuracy

Inactive Publication Date: 2017-12-01
河北燕大燕软信息系统有限公司
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Problems solved by technology

Due to the influence of the on-site environment, the initial preparation work for the measuring equipment is very demanding, and the measurement of the elliptical cone takes a long time and the efficiency is low

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  • Ball, cylinder and elliptic cone model recognition method based on point cloud data processing technology
  • Ball, cylinder and elliptic cone model recognition method based on point cloud data processing technology
  • Ball, cylinder and elliptic cone model recognition method based on point cloud data processing technology

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Embodiment Construction

[0026] refer to figure 1 , Figure 2(a) to Figure 2(f) , in conjunction with examples, the specific solutions of the present invention are further described.

[0027] A kind of sphere, cylinder, ellipse cone model identification method based on point cloud data processing technology of the present invention, the steps are as follows:

[0028] Step 1. Use a high-precision space scanner to scan the spherical, cylindrical, and elliptical cone models and obtain point cloud data for the spherical, cylindrical, and elliptical cone models.

[0029] Use high-precision space scanning equipment to scan the spherical, cylindrical, and elliptical cone models to obtain the position information of each point on the spherical, cylindrical, and elliptical cone models in the xyz three-dimensional space. The position information in the three-dimensional space constitutes the point cloud data of the sphere, cylinder and ellipse cone model.

[0030] Step 2. Use the Delaunay mesh division metho...

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Abstract

The invention relates to a ball, cylinder and elliptic cone model recognition method based on a point cloud data processing technology. The method comprises the following steps: a high-precision three-dimensional scanner is used to scan ball, cylinder and elliptic cone models and point cloud data of the ball, cylinder and elliptic cone models are acquired; a Delaunay grid partitioning method is used to process the acquired point cloud data of the ball, cylinder and elliptic cone models, and thus, a TIN (Triangulated Irregular Network) grid model for the point cloud data of the ball, cylinder and elliptic cone models is acquired; and a least square fitting method is used to calculate each point in the nearest neighborhood point set of each space point on the TIN grid model for the acquired ball, cylinder and elliptic cone models, and thus, a distribution law of a nearest neighborhood plane normal vector of each space point in the acquired point cloud data of the ball, cylinder and elliptic cone models in normal vector space is further acquired.

Description

【Technical field】 [0001] The invention relates to the technical field of three-dimensional point cloud data processing, in particular to a method for recognizing sphere, cylinder and ellipse cone models based on point cloud data processing technology. 【Background technique】 [0002] The sphere, cylinder, and ellipse cone models are typical recognized objects in the field of shape recognition, which have relatively regular spatial axisymmetric figures. Shape recognition technology plays an important role in the aerospace, automotive and defense industries. How to quickly and accurately identify the sphere, cylinder, and ellipse cone models is an important problem that needs to be solved urgently in the field of shape recognition in three-dimensional space. [0003] At present, direct measurement methods are mainly used for the detection of spherical, cylindrical and elliptical cone models, including vernier caliper measurement, angle template detection, sine gauge measuremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/60
CPCG06T7/60G06T2200/04G06T2207/10028
Inventor 孔德明田小强沈阅
Owner 河北燕大燕软信息系统有限公司
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