Connection piece identification method based on structured light three-dimensional measurement system

A three-dimensional measurement and connector technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of inability to identify connectors, inability to measure the flatness of connectors, etc., and achieve reliable recognition results and recognition efficiency. high effect

Active Publication Date: 2017-05-10
TSINGHUA UNIV +1
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Problems solved by technology

However, the current method mainly relies on the three-dimensional shape of the protrusions or depressions on the surface of the connector to identify the connector, so it is impossible to identify all the connectors, so it is impossible to measure the flatness of all the connectors

Method used

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  • Connection piece identification method based on structured light three-dimensional measurement system
  • Connection piece identification method based on structured light three-dimensional measurement system
  • Connection piece identification method based on structured light three-dimensional measurement system

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Embodiment Construction

[0018] The method for identifying connecting parts based on the structured light three-dimensional measurement system according to the present invention will be described in detail below with reference to the accompanying drawings.

[0019] refer to figure 1 , according to the method for identifying connecting parts based on the structured light three-dimensional measurement system of the present invention, including steps S1, S2, S3, S4 and S5.

[0020] S1: Build a structured light three-dimensional measurement system including camera 1, projector 2, bracket 3, and computer 4. Both camera 1 and projector 2 are fixed on bracket 3, so that the relative positions of camera 1 and projector 2 are fixed, and the structure The optical three-dimensional measurement system is calibrated to obtain the internal reference matrix K of camera 1 C , the internal reference matrix K of projector 2 P and the transformation matrix between camera 1 and projector 2 [R CP |t CP ], where R CP ...

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Abstract

The present invention provides a connection piece identification method based on a structured light three-dimensional measurement system. The method comprises: establishing a structured light three-dimensional measurement system; shooting a connection piece set including different types of connection pieces to obtain an original connection piece set images so as to obtain the texture information of the original connection piece set images, wherein the texture information is the two-dimensional information of pixel points; and obtaining the three-dimensional cloud points of the connection piece set based on the N-step phase shift method measurement principle, wherein the three-dimensional cloud points is the three-dimensional information of the pixel points. Therefore, a corresponding relation from the two-dimensional information to the three-dimensional informationis established, the outline of each type of connection piece in the connection piece set is extracted according to the texture information of the original connection piece set images, the three-dimensional point cloud of the connection pieces and the corresponding relation therebetween, and it is determined whether the outline of each type of connection piece in the connection piece set accords with the outline of the type of standard connection piece or not. Therefore the identification of the connection piece is completed, the identification efficiency of the connection identification method is high and the identification result is reliable.

Description

technical field [0001] The invention relates to a method for identifying a connecting piece, in particular to a method for identifying a connecting piece based on a structured light three-dimensional measurement system. Background technique [0002] In engineering, it is often necessary to connect some components. The components that play a connecting role are called connectors. Commonly used connectors include bolts, rivets, and nails. Connector identification is the premise of connector flatness measurement. Before measurement, it is necessary to identify all the connectors on the surface of the object to be measured, so that the flatness of all connectors can be accurately and quickly measured. However, the current method mainly relies on the three-dimensional shape of the protrusions or depressions on the surface of the connector to identify the connector, so it is impossible to identify all the connectors, so it is impossible to measure the flatness of all the connector...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
CPCG01B11/2433
Inventor 徐静刘顺涛陈睿陈恳陈雪梅郑林斌何凤涛郭喜锋刘大鹏
Owner TSINGHUA UNIV
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