Article(id=1202253743917064693, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202253739831812559, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20220285, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1764569229344, onlineDateStr=2025-12-01, pubDate=1681920000000, pubDateStr=2023-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764569229344, onlineIssueDateStr=2025-12-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764569229344, creator=13701087609, updateTime=1764569229344, updator=13701087609, issue=Issue{id=1202253739831812559, tenantId=1146029695717560320, journalId=1189873562199433220, year='2023', volume='', issue='4', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764569228370, creator=13701087609, updateTime=1764576277615, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1202283306583810311, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202253739831812559, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1202283306583810312, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202253739831812559, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=60, endPage=67, ext={EN=ArticleExt(id=1202253744156140027, articleId=1202253743917064693, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Irregular Part Grasping System of Manipulator Based on 3D Vision, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to solve the problem of inaccurate positioning or low grasping accuracy of parts grasped by manipulator, this paper proposed a method of grasping irregular parts of manipulator based on 3D vision. This method mainly consisted of 3 algorithm modules: system space calibration, part point cloud location and segmentation, and part pose estimation. The external parameter calibration method of point cloud camera based on 2D image and the part point cloud segmentation method based on image semantic segmentation were proposed. Experiments show that the proposed calibration method achieves a system accuracy error of 1 mm, with high efficiency and strong universality. Compared with the commonly used clustering segmentation, the part point cloud segmentation method has higher accuracy and efficiency. The designed 2-stage part spatial pose calculation method can accurately estimate the 6-DOF pose of the part in space, and the accuracy is improved by about 1.8 times compared with the 1-stage matching method. The proposed manipulator irregular part grasping system based on 3D vision has high precision, strong scalability and wide adaptability.
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为解决机械臂抓取零件定位不准或抓取精度不高的问题,提出了一种基于3D视觉机械臂无规则零件抓取方法,该方法主要包括系统空间标定、零件点云定位分割、零件位姿估计算法模块,提出了基于2D图像的点云相机外参标定方法及基于图像语义分割的零件点云分割方法。经试验验证,所提出的标定方法达到1 mm的系统精度误差,而且求解效率高、通用性强;与常用的聚类分割相比,零件点云分割方法精度及效率更高。所设计的二阶段零件空间位姿计算方法能准确估计零件在空间中的6自由度位姿,相比单一阶段匹配方法精度提高约1.8倍。所提出的基于3D视觉的机械臂无规则零件抓取系统精度高、可扩展性强、适应情形广。
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肖伯俊(1992—),男,产品经理,硕士学位,研究方向为智能交通。
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朱胜银(1990—),男,算法开发工程师,硕士学位,研究方向为光电信息处理。
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朱胜银(1990—),男,算法开发工程师,硕士学位,研究方向为光电信息处理。
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朱胜银(1990—),男,算法开发工程师,硕士学位,研究方向为光电信息处理。
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34(4): 570-580., articleTitle=基于二次关键点匹配的药盒位姿估计方法, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1202253749625512625, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, xref=null, ext=[AuthorCompanyExt(id=1202253749629706930, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, companyId=1202253749625512625, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Geely Automobile Research Institute (Ningbo) Co., Ltd., Ningbo 315300), AuthorCompanyExt(id=1202253749638095539, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, companyId=1202253749625512625, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=吉利汽车研究院(宁波)有限公司,宁波 315300)])], figs=[ArticleFig(id=1202253751592641270, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=I/O9WE/91YDkrjdMvPWY9g==, figureFileBig=Ryze+UKA2HJJtNtUDbXsrw==, tableContent=null), ArticleFig(id=1202253752695743224, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=图1, caption=
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相机外部参数标定流程, figureFileSmall=jVMF2Sb4B8BiKx93YHhJCg==, figureFileBig=MrxwzI/IpM64UrHNVdWqCw==, tableContent=null), ArticleFig(id=1202253753211642629, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=2rj5Ok8gupTPXbDQCbIeRg==, figureFileBig=utR/aZ5rvELgwOCJS188Dw==, tableContent=null), ArticleFig(id=1202253753316500233, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=图4, caption=
试验中所用的部分机械部件, figureFileSmall=2rj5Ok8gupTPXbDQCbIeRg==, figureFileBig=utR/aZ5rvELgwOCJS188Dw==, tableContent=null), ArticleFig(id=1202253753438135052, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=NE60G2ZdW/r8TnfHgtbolA==, figureFileBig=zYqDca/xyXkZ6vRea5Hwjw==, tableContent=null), ArticleFig(id=1202253753551381263, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=图5, caption=
自动标注原理, figureFileSmall=NE60G2ZdW/r8TnfHgtbolA==, figureFileBig=zYqDca/xyXkZ6vRea5Hwjw==, tableContent=null), ArticleFig(id=1202253753652044561, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=Vv8uIeigu3qNCiErjwIN2Q==, figureFileBig=irnFCRNLgBjQnfmfLOoRjQ==, tableContent=null), ArticleFig(id=1202253753731736341, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=图6, caption=
零件点云定位分割框图, figureFileSmall=Vv8uIeigu3qNCiErjwIN2Q==, figureFileBig=irnFCRNLgBjQnfmfLOoRjQ==, tableContent=null), ArticleFig(id=1202253753819816729, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=N5Ii/DFuOnFrz+SLz1hkEg==, figureFileBig=j1sa0zM9NEbGRLTu1E6bRg==, tableContent=null), ArticleFig(id=1202253753903702812, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=图7, caption=
零部件位姿估计原理, figureFileSmall=N5Ii/DFuOnFrz+SLz1hkEg==, figureFileBig=j1sa0zM9NEbGRLTu1E6bRg==, tableContent=null), ArticleFig(id=1202253753991783199, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=KGuEKm4t+AdZ7AFksMeoVQ==, figureFileBig=GQ4GCKtYY+44qr2lrT1szQ==, tableContent=null), ArticleFig(id=1202253754075669278, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=图8, caption=
相机内外部参数标定图片, figureFileSmall=KGuEKm4t+AdZ7AFksMeoVQ==, figureFileBig=GQ4GCKtYY+44qr2lrT1szQ==, tableContent=null), ArticleFig(id=1202253754172138274, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=l1qcS260ZSxPs/F4UJ8bQQ==, figureFileBig=LnvL0c55UI0Vr8N6IwPEwg==, tableContent=null), ArticleFig(id=1202253754314744612, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=图9, caption=
整体匹配效果, figureFileSmall=l1qcS260ZSxPs/F4UJ8bQQ==, figureFileBig=LnvL0c55UI0Vr8N6IwPEwg==, tableContent=null), ArticleFig(id=1202253754377659173, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=x+zqKIoSYSkWFf/xEvMmfQ==, figureFileBig=m/v2RVAYvLDq8nyCxfoIaw==, tableContent=null), ArticleFig(id=1202253754453156647, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=图10, caption=
实际零件抓取结果, figureFileSmall=x+zqKIoSYSkWFf/xEvMmfQ==, figureFileBig=m/v2RVAYvLDq8nyCxfoIaw==, tableContent=null), ArticleFig(id=1202253754516071209, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Fx/像素 | Fy/像素 | x0/像素 | y0/像素 |
| 1461.057 6 | 1460.889 8 | 953.640 0 | 596.133 3 |
| K1 | K2 | K3 | P1 | P2 |
| -0.064 9 | 0.157 1 | 0.000 05 | 0.000 15 | -0.055 |
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相机内参总数标定结果
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| Fx/像素 | Fy/像素 | x0/像素 | y0/像素 |
| 1461.057 6 | 1460.889 8 | 953.640 0 | 596.133 3 |
| K1 | K2 | K3 | P1 | P2 |
| -0.064 9 | 0.157 1 | 0.000 05 | 0.000 15 | -0.055 |
), ArticleFig(id=1202253754675454765, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| x/m | y/m | z/m | θ1/(°) | θ2/(°) | θ3/(°) |
| 第1组 | 0.173 050 | 2.472 478 | 1.941 698 | 3.136 53 | -0.110 | -0.002 0 |
| 第2组 | 0.173 364 | 2.473 413 | 1.942 168 | 3.134 55 | -0.107 | 0.000 1 |
| 波动偏差 | 0.000 314 | 0.000 935 | 0.000 470 | 0.001 98 | 0.003 | 0.002 5 |
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不同组数据的相机外部参数标定结果
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| x/m | y/m | z/m | θ1/(°) | θ2/(°) | θ3/(°) |
| 第1组 | 0.173 050 | 2.472 478 | 1.941 698 | 3.136 53 | -0.110 | -0.002 0 |
| 第2组 | 0.173 364 | 2.473 413 | 1.942 168 | 3.134 55 | -0.107 | 0.000 1 |
| 波动偏差 | 0.000 314 | 0.000 935 | 0.000 470 | 0.001 98 | 0.003 | 0.002 5 |
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| 参数 | x | y | z |
| 预测/m | 0.344 61 | 2.714 27 | 1.203 03 |
| 记录实际值/m | 0.339 30 | 2.714 19 | 1.203 81 |
| 误差/mm | 5.31 | 0.08 | 0.78 |
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标定板一角实际空间位置验证
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| 参数 | x | y | z |
| 预测/m | 0.344 61 | 2.714 27 | 1.203 03 |
| 记录实际值/m | 0.339 30 | 2.714 19 | 1.203 81 |
| 误差/mm | 5.31 | 0.08 | 0.78 |
), ArticleFig(id=1202253754990027573, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 零件 | 原场景点云 | 聚类分割方法 | 本文方法 |
| 零件1 | | |  |
| 零件2 |  |  |  |
| 零件3 | | |  |
), ArticleFig(id=1202253755103273784, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=表4, caption=
零件点云定位分割效果
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| 零件 | 原场景点云 | 聚类分割方法 | 本文方法 |
| 零件1 | | |  |
| 零件2 |  |  |  |
| 零件3 | | |  |
), ArticleFig(id=1202253755178771257, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 零件 | 一阶段匹配 (Fpfh) | 二阶段匹配 (本文方法Fpfh+ICP) |
| 零件1 |  |  |
| 零件2 |  |  |
| 零件3 |  |  |
), ArticleFig(id=1202253755262657339, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=表5, caption=
零件点云匹配效果
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| 零件 | 一阶段匹配 (Fpfh) | 二阶段匹配 (本文方法Fpfh+ICP) |
| 零件1 |  |  |
| 零件2 |  |  |
| 零件3 |  |  |
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| 标志点误差 | 零件1 | 零件2 | 零件3 |
| 1阶段Fpfh | 7.376 33 | 10.299 1 | 4.380 62 |
| 2阶段Fpfh+ICP | 0.605 316 | 4.014 07 | 3.113 62 |
), ArticleFig(id=1202253755447206718, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202253743917064693, language=CN, label=表6, caption=
零件点云抓取位姿误差 mm
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| 标志点误差 | 零件1 | 零件2 | 零件3 |
| 1阶段Fpfh | 7.376 33 | 10.299 1 | 4.380 62 |
| 2阶段Fpfh+ICP | 0.605 316 | 4.014 07 | 3.113 62 |
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