中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A High Precision and Fast Alignment Method based on Binocular Vision

文献类型:期刊论文

作者Gao H(高晗)2,3; Shen F(沈飞)1,2,3; Zhang F(张峰)1,2,3; Zhang ZT(张正涛)1,2,3
刊名INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
出版日期2022
卷号0页码:0
关键词Visual Alignment, Binocular Vision, Camera Calibration, Image Processing
DOI10.1007/s12541-022-00674-7
文献子类SCI
英文摘要

Alignment tasks for precision electronics manufacturing require high accuracy and low time consumption. However, in the current industrial environment, multiple servo alignment operations are often required to achieve the desired accuracy targets, which is time-consuming. In this paper, a high precision, fast alignment method based on binocular vision is proposed, which allows the accurate movement of the workpiece to the target position in only one alignment operation, without the need for a standard calibration board. Firstly, a calibration method of the telecentric lens camera is proposed based on an improved nonlinear damped least-squares method to establish the relationship between the image coordinate system and the local world coordinate system in the binocular vision system. Secondly, in order to transform the coordinates from the local world coordinate system to a unified coordinate system with the platform’s rotation center as the origin, an angle constraint-based rotation center calibration method is proposed. Thirdly, a two-stage feature point detection method based on shape matching is proposed to detect the feature points of the workpiece. Based on these, the position and pose of the workpiece are obtained. Then the alignment commands are calculated based on the current and the target position and pose of the workpiece, enabling the accurate alignment to be accomplished in one operation. Finally, taking the mobile phone’s cover glass alignment task as an example, a series of calibration and alignment experiments were carried out. The experiments and results show that the alignment errors are within ±0.020mm and the time taken to calculate alignment commands is less than 20ms, which demonstrates the effectiveness of the proposed method.

语种英语
源URL[http://ir.ia.ac.cn/handle/173211/48928]  
专题自动化研究所_精密感知与控制研究中心
精密感知与控制研究中心_精密感知与控制
通讯作者Shen F(沈飞)
作者单位1.中科慧远视觉技术有限公司
2.中国科学院大学
3.中国科学院自动化研究所
推荐引用方式
GB/T 7714
Gao H,Shen F,Zhang F,et al. A High Precision and Fast Alignment Method based on Binocular Vision[J]. INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING,2022,0:0.
APA Gao H,Shen F,Zhang F,&Zhang ZT.(2022).A High Precision and Fast Alignment Method based on Binocular Vision.INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING,0,0.
MLA Gao H,et al."A High Precision and Fast Alignment Method based on Binocular Vision".INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING 0(2022):0.

入库方式: OAI收割

来源:自动化研究所

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