| A High Precision and Fast Alignment Method based on Binocular Vision |
| Gao H(高晗)1,2; Shen F(沈飞)1,2,3; Zhang F(张峰)1,2,3; Zhang ZT(张正涛)1,2,3
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发表期刊 | INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
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| 2022
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卷号 | 0页码:0 |
文章类型 | SCI
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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.
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关键词 | Visual Alignment, Binocular Vision, Camera Calibration, Image Processing
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学科门类 | 工学::控制科学与工程
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DOI | 10.1007/s12541-022-00674-7
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收录类别 | SCI
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语种 | 英语
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ia.ac.cn/handle/173211/48928
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专题 | 精密感知与控制研究中心 中国科学院工业视觉智能装备工程实验室_精密感知与控制
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通讯作者 | Shen F(沈飞) |
作者单位 | 1.中国科学院自动化研究所 2.中国科学院大学 3.中科慧远视觉技术有限公司
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第一作者单位 | 中国科学院自动化研究所
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通讯作者单位 | 中国科学院自动化研究所
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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.
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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.
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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.
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