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Industrial part size measurement method based on 3D visual sensor

A technology of visual sensor and measurement method, which is applied in the direction of measuring devices, instruments, image analysis, etc., can solve undiscovered problems, achieve the effect of improving production efficiency and reducing labor costs

Active Publication Date: 2021-08-17
WENZHOU UNIV OUJIANG COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] After searching, no publications of the prior art identical or similar to the present invention were found

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  • Industrial part size measurement method based on 3D visual sensor
  • Industrial part size measurement method based on 3D visual sensor
  • Industrial part size measurement method based on 3D visual sensor

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Embodiment Construction

[0069] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0070] A method for measuring the size of industrial parts based on a 3D vision sensor, comprising the following steps:

[0071] Step 1. Carry out manual labeling based on the standard model, select the point set to be detected for the standard model, and mark the basic geometric shapes that constitute the point set, including points, lines, surfaces, circles and cylinders;

[0072] The specific method of said step 1 is: based on OpenSceneGraph (OSG) to realize the three-dimensional interactive visualization system to complete the rendering, visualization and basic interactive operation of the point set in the standard model, including selecting or selecting a plurality of target points on the standard model Deselect, and label the geometric shapes that make up this set of points once the selection is done;

[0073] The concrete steps of described...

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Abstract

The invention relates to an industrial part dimension measurement method based on a 3D visual sensor, and the method comprises the following steps: 1, carrying out the manual marking based on a standard model, selecting a point set needing to be detected for the standard model, and marking the basic geometric shapes, including points, lines, surfaces, circles and cylinders, of the point set; step 2, registering the scanning point cloud of the part to be measured with the standard model in the step 1 to unify a coordinate system, wherein the registering process comprises coarse registering and fine registering; and step 3, through point selection of the standard model in the step 1 and a point cloud registration process in the step 2, searching and further calculating a point set corresponding to the standard model in the to-be-measured point cloud and size data based on the minimum distance and the marked point set. According to the method, the industrial parts to be detected can be measured rapidly and accurately according to the design requirements of the industrial parts, the time complexity can meet the requirements of industrial production, and a plurality of industrial parts can be measured and analyzed.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional point cloud collection, labeling, registration, and detection and recognition of geometric elements represented by point clouds, and relates to a method for measuring the size of industrial parts, in particular to a method for measuring the size of industrial parts based on a 3D visual sensor. Background technique [0002] At present, dimensional inspection is a necessary link in the dimensional measurement process of all products, especially in the production process of precision parts, where it is difficult to avoid deformation in the process of manufacturing and lead to poor production of precision parts. With the improvement of manufacturing level, a large number of A-level surfaces appear in home appliances, aircraft, and auto parts. Users have higher and higher requirements for the accuracy of curved surface parts. However, due to the complex shape of curved surface parts, traditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G06T7/30
CPCG01B11/00G06T7/30G06T2207/10028Y02P90/30
Inventor 龚裕钱汪日伟李雷辉管依婷马杰周荣强党旭飞
Owner WENZHOU UNIV OUJIANG COLLEGE
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