Cylindrical surface point cloud fitting method based on geometrical characteristics of section cutting plane

A technology of geometric features and section planes, which is applied in the field of cylindrical point cloud fitting based on the geometric features of section planes, can solve the problems of complex algorithm principles, difficult selection of iterative initial values, cumbersome derivation process, etc. The results are reliable, the algorithm principle and the effect of simplifying the calculation difficulty

Pending Publication Date: 2021-03-09
STATE GRID EAST INNER MONGOLIA ELECTRIC POWER CO LTD MAINTENANCE BRANCH +1
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Problems solved by technology

Due to the complexity of the principle, the cumbersome derivation process, and the difficulty in selecting the initial value of the iteration, this kind of algorithm has certain shortcomings in the difficulty of implementation or the accuracy of the algorithm.

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  • Cylindrical surface point cloud fitting method based on geometrical characteristics of section cutting plane
  • Cylindrical surface point cloud fitting method based on geometrical characteristics of section cutting plane
  • Cylindrical surface point cloud fitting method based on geometrical characteristics of section cutting plane

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] Before explaining the point cloud fitting method of the cylindrical surface based on the geometric features of the sectional surface of the present invention, its technical principle is firstly introduced.

[0033] A cylindrical surface is a collection of moving points whose distance from a moving point to a fixed line segment is equal...

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Abstract

An accurate and simple cylinder fitting algorithm has important significance in the field of reverse engineering. Aiming at the defects of solving difficulty and algorithm precision of an existing point cloud cylinder fitting algorithm, a cylindrical surface is sectioned on the basis of a discretization thought, geometrical characteristics of a contour line of a sectioning surface of a cylinder are analyzed, a relation among a geometrical center, a minor semi-axis and geometrical parameters of the cylindrical surface of a sectioning surface ellipse is constructed, and the cylindrical surface fitting algorithm based on the least square method is provided and comprises the following steps: processing point cloud data of cylindrical equipment of a transformer substation; calculating a cylinder section elliptic equation; calculating radius and axis direction vectors of the cylinder; calculating the axis length of the cylinder, and fitting the cylinder. And a simple and reliable new solution can be provided for cylindrical surface fitting.

Description

technical field [0001] The invention relates to the technical field of substation reverse engineering, in particular to a point cloud fitting method of a cylindrical surface based on the geometric characteristics of a cut surface. Background technique [0002] With the increasing informatization, digitalization and intelligence of substations, 3D visualization of substation real scenes has become an important task. The quality of the 3D reconstruction model of the equipment directly affects the effect of the 3D visualization of the substation. Quickly and accurately fitting the geometric shape of the equipment is one of the important issues in reverse modeling engineering. Cylindrical surfaces, as typical curved surfaces, exist in large quantities in substation equipment and facilities. Fast and accurate fitting of cylindrical surfaces is of great significance for reverse reality modeling of substation facilities. [0003] At present, the cylindrical surface fitting algorit...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/10
CPCG06T17/10
Inventor 孟辉王远东沈小军王东升张海龙吴小东赵振东范胜国陈佳武一夫
Owner STATE GRID EAST INNER MONGOLIA ELECTRIC POWER CO LTD MAINTENANCE BRANCH
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