Composite three-dimensional laser measurement system and measurement method

Abstract

The invention provides a composite three-dimensional point laser measurement system and a measurement method, comprising three-dimensional scanning and three-dimensional detection. Normal optical scanning is adopted so as to obtain the profile information of the article quickly and establish a three-dimensional model; motion trajectory planning is carried out by the profile data; and a point laser probe is guided to carry out more precise measurement so as to obtain the three-dimensional point cloud data of higher precision and higher quality. The three-dimensional non-contact detection to the characteristic position, appointed section line and integer of the workpiece is obtained further on the basis of comparing the point cloud and model data. The system and the method have the advantages that the non-contact measurement can obtain the point cloud of good quality and high precision, the article can be positioned freely, precise clamping devices are not needed, the measurement speed is quick, the process is automatic and the measured article has wide applicable range.

Description

1. Technical field [0001] The patent of the present invention is a high-tech integrating optics, image processing, machinery, computer vision technology and software engineering. It belongs to the field of computer vision three-dimensional scanning and detection technology. , high-precision 3D / 2D detection, defect detection, etc., and can complete high-precision 3D scanning of products at the same time. 2. Background technology [0002] With the rapid development of computer vision technology, photoelectric technology, and CAD / CAM technology, 3D scanning and detection technology has been increasingly widely used in various fields such as industry, medicine, clothing and footwear, film and television advertising, game animation, and online e-commerce. important role. [0003] Commonly used 3D scanning and detection technologies are divided into contact and non-contact types according to different sensing methods. [0004] Contact measurement uses the probe head to directly ...

AI Technical Summary

Problems solved by technology

Contact measurement has high accuracy and reliability; its disadvantages are: high measurement cost; easy wear of the probe, high requirements on the working environment, and slow measurement speed; detection of some internal components has inherent limitations, and it cannot measure soft object

[0009] In view of the incompleteness of the current non-contact measurement technology, in the actual industrial high-precision measurement, it often relies on the contact three-coordinate system. The measurement efficiency is low, which leads to the increase of the measurement cost, and the effect of random inspection leads to the uncertainty of product quality. At the same time, the information obtained by the three-coordinate system is not rich enough, which leads to the oversimplification of the industrial inspection process

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