Structured light-based dynamic 3D measurement system for cold-formed steel hollow sections

被引：0

作者：

Mao Z. ^{[1
]}

Li D. ^{[2
]}

Zhao X. ^{[2
]}

机构：

[1] Technical College for the Deaf, Tianjin University of Technology, Tianjin

[2] School of Electrical Engineering and Automation, Tianjin University of Technology, Tianjin

来源：

International Journal of Mechatronics and Manufacturing Systems | 2022年 / 15卷 / 2-3期

关键词：

camera calibration; cold-formed steel hollow sections; machine vision; optimisation; point cloud; profile measurement; projector calibration; structured light;

D O I：

10.1504/ijmms.2022.124920

中图分类号：

学科分类号：

摘要：

In the cold-formed steel hollow section manufacturing process, one of the key stages is forming an inspection to check whether it meets the requirement. In this paper, a dynamic 3D measurement system based on low-cost structured light was presented, which can be used to measure the dimensions of a cold-formed steel hollow section in real-time. The system is mainly composed of four sets line-structured light inspection device. A temporary coordinate is proposed to assist in solving multi the calibration of structured light plane. An optimisation method of L-M algorithm is proposed to solve the problem of stitching accuracy of point cloud contour. A point cloud simplification processing method is proposed for solving main parameters. The side length measurement error of the system is within ±0.05 mm, and the outer arc radius measurement error is within ±0.45 mm. All parallelisable tasks can achieve an acquisition rate of up to 25 fps. Copyright © 2022 Inderscience Enterprises Ltd.

引用

页码：203 / 225

页数：22

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