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基于双目视觉的薄壁零件圆孔轮廓测量

Round-Hole Profile Measurement of Thin-Walled Parts Based on Binocular Vision

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摘要

针对工业现场的薄壁类零件圆孔轮廓的测量问题,构建一套基于双目视觉的测量系统。以双目摄像机作为视觉传感器,通过检测圆孔内部和零件表面灰度值,实现光源亮度的自动调节,使左右相机同时采集到最清晰的圆孔图像。通过圆孔轮廓识别和基于外极线约束的匹配,继而实现圆孔轮廓三维重建,从而获取圆孔的孔径信息和三维坐标。实验结果表明,系统具有较高的测量精度,其稳定性与精确性满足工业现场的应用。

Abstract

In this study, a measurement system is constructed based on binocular vision to enable round-hole profile measurement of the thin-walled parts in the industrial field. Using a binocular camera as the vision sensor, the brightness of light source can be automatically adjusted by detecting the gray value of the hole''s inner portion or the part''s exterior, enabling the left and right cameras to simultaneously obtain the clearest round-hole image. Three-dimensional reconstruction can be realized through round-hole profile detection and matching based on epipolar restriction; further, the aperture information and three-dimensional coordinates can be acquired. The experimental results denote that the system exhibits high accuracy and that its stability and accuracy satisfy the requirements of industrial applications.

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补充资料

中图分类号:O436

DOI:10.3788/CJL201946.1204004

所属栏目:测量与计量

基金项目:国家自然科学基金;

收稿日期:2019-07-10

修改稿日期:2019-08-19

网络出版日期:2019-12-01

作者单位    点击查看

解则晓:中国海洋大学工程学院, 山东 青岛 266100
王晓东:中国海洋大学工程学院, 山东 青岛 266100
宫韩磊:中国海洋大学工程学院, 山东 青岛 266100

联系人作者:王晓东(xiaodongqingdao@126.com)

备注:国家自然科学基金;

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引用该论文

Xie Zexiao,Wang Xiaodong,Gong Hanlei. Round-Hole Profile Measurement of Thin-Walled Parts Based on Binocular Vision[J]. Chinese Journal of Lasers, 2019, 46(12): 1204004

解则晓,王晓东,宫韩磊. 基于双目视觉的薄壁零件圆孔轮廓测量[J]. 中国激光, 2019, 46(12): 1204004

被引情况

【1】伍济钢,邵俊,周根,阳德强,成远. 基于双目视觉与特征匹配跟踪的薄壁件振动测量. 激光与光电子学进展, 2020, 57(10): 101103--1

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