可变视角下大范围视觉高分辨率快速测量

doi:10.3901/JME.2022.14.085

机械工程学报 ›› 2022, Vol. 58 ›› Issue (14): 85-92,103.doi: 10.3901/JME.2022.14.085

• 特邀专栏：大型构件视觉测量与机器人加工 • 上一篇下一篇

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可变视角下大范围视觉高分辨率快速测量

钟雨君¹, 陈宇璇¹, 范鑫^1,2, 阚艳^1,2, 金一¹, 竺长安¹

1. 中国科学技术大学工程科学学院合肥 230026;
2. 中国科学技术大学国营芜湖机械厂航空新装备智能检测及维护创新实验室合肥 230026

收稿日期:2021-08-13 修回日期:2021-12-15 出版日期:2022-07-20 发布日期:2022-09-07
通讯作者: 金一(通信作者)，男，1985年出生，博士，副教授，硕士研究生导师。主要研究方向为测试技术及仪器、机器视觉与图像处理。E-mail：jinyi08@ustc.edu.cn
作者简介:钟雨君，女，1997年出生。主要研究方向为测试技术及仪器、机器视觉与图像处理。E-mail：zyj053@mail.ustc.edu.cn
基金资助:
国家自然科学基金重大科研仪器研制(61727809)、国家重点研发计划(2019YFC0117800)和安徽省科技重大专项(201903c08020002)资助项目。

Large-range Vision and High-resolution Rapid Measurement with Variable Viewing Angle

ZHONG Yujun¹, CHEN Yuxuan¹, FAN Xin^1,2, KAN Yan^1,2, JIN Yi¹, ZHU Changan¹

1. School of Engineering Science, University of Science and Technology of China, Hefei 230026;
2. Intelligent Testing and Maintenance Innovation Laboratory for New Aviation Equipment, University of Science and Technology of China-State-owned Wuhu Machinery Factory, Hefei 230026

Received:2021-08-13 Revised:2021-12-15 Online:2022-07-20 Published:2022-09-07

摘要/Abstract

摘要： 现有大范围视觉装置往往存在图像畸变严重、成像系统结构复杂、成本高、体积庞大等问题，给大范围视觉装置的实际应用造成不可忽视的困难。针对这一问题，提出一种面向大视场的高分辨率轻量化测量系统，该系统利用二维振镜扫描方式实现对相机视角的控制，无需改变相机数量和姿态即可实现小型系统下大范围视觉的高分辨率成像，具有低成本、快速性等优点。同时利用拓扑结构约束构造代价函数，有效提高了图像匹配的快速性、稳健性及精度。试验结果表明，基于上述方法，系统能够实现原相机视场5倍以上的大范围成像，同时，在测量距离100 cm和70 cm处分别达到131.12 μm/像素和93.31 μm/像素的成像分辨率，该系统的鲁棒性和优化算法在特征点对匹配上的有效性、快速性均得到验证，为大型构件的高精度视觉测量提供新思路。

关键词: 大视场, 高分辨率, 二维振镜, 快速测量

Abstract: There are some problems such as serious image distortion, complex structure, high cost and huge volume of imaging system in the existing large-scale visual devices. The difficulties that can not be ignored in the practical application of large-scale vision devices. To solve this problem, a high resolution lightweight measurement system for large field of view is proposed. The camera's perspective is controlled by using the scanning mode of two-dimensional galvanometer. The high-resolution imaging of large-scale vision in a small system without changing the number and attitude of cameras can be realized. The advantages of low cost and rapidity are provided by the system. At the same time, the cost function is constructed with topological structure constraint, which effectively improves the speed, robustness and accuracy of image matching. Experimental results show that, based on the above method, a large range of imaging more than 5 times of the original camera's field of view can be achieved, and at the measurement distance of 100 cm and 70 cm, the imaging resolution is 131.12 μm/pixel and 93.31 μm/pixel, respectively. The robustness of the system and the effectiveness and speed of the optimization algorithm in feature point pair matching are verified. A new idea for high precision vision measurement of large components is provided.

Key words: large field of view, high-resolution, two-dimensional galvanometer, rapid measurement

中图分类号:

TP391

钟雨君, 陈宇璇, 范鑫, 阚艳, 金一, 竺长安. 可变视角下大范围视觉高分辨率快速测量[J]. 机械工程学报, 2022, 58(14): 85-92,103.

ZHONG Yujun, CHEN Yuxuan, FAN Xin, KAN Yan, JIN Yi, ZHU Changan. Large-range Vision and High-resolution Rapid Measurement with Variable Viewing Angle[J]. Journal of Mechanical Engineering, 2022, 58(14): 85-92,103.

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可变视角下大范围视觉高分辨率快速测量

Large-range Vision and High-resolution Rapid Measurement with Variable Viewing Angle

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