Monocular machine vision-based non-contact three-dimensional scanning method

Abstract

The invention discloses a monocular machine vision-based non-contact three-dimensional scanning method. The cost is reduced, the operation is simplified, the real-time property is realized and a measuring result is displayed in real time through establishment of a new background model, determination of a spatial coordinate system and extraction and storage modes of center of structured light. The monocular machine vision-based non-contact three-dimensional scanning method provided by the invention has low requirements on an operation technology; and for the situation that the non-contact three-dimension scanning mode generally requires higher application skills, the invention provides a friendly use method which is simple and easy to operate and does not require that a user has higher professional knowledge. The scanning speed of the monocular machine vision-based non-contact three-dimensional scanning method is quick; data analysis is generally required to be performed in non-contact measurement, so that the measuring time is generally short; and according to the monocular machine vision-based non-contact three-dimensional scanning method, real-time scanning can be realized, the measuring result can be displayed in real time, and the great convenience is provided for operation.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional scanning, and relates to a non-contact three-dimensional scanning method based on monocular machine vision. Background technique [0002] At present, three-dimensional scanning methods are mainly divided into two types, contact three-dimensional scanning and non-contact three-dimensional scanning. Contact scanning is realized by recording the three-dimensional position information of the contact point on the object surface after the high-precision controllable probe directly contacts the object surface. The non-contact scanning method is mainly used in academic research and industrial production. There are two main methods used, one is based on physical sound waves, such as three-dimensional scanning through ultrasonic waves; the other is based on optics and machines. Visual non-contact 3D scanning method. The non-contact scanning method can better protect the measured object and avoid...

AI Technical Summary

Problems solved by technology

[0005] 1) The feature points are not easy to extract, and the matching process is extremely prone to errors, and the errors are relatively large

[0006] 2) The matching algorithm of corresponding points in the parallax image is very complicated, and it is difficult to increase the scanning speed due to time-consuming

[0007] 3) The calibration and correction of the binocular vision system is difficult to operate, and small movements or deformations will cause distortion

[0010] 2) The scanning process has strict requirements on the environment, and all light in the environment must be canceled, otherwise the scanning effect will be seriously affected

[0011] 3) The software operation is complicated, and it takes a long time to get familiar with the software

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