大尺度钢板的三维测量和拼接

史金龙; 钱强; 庞林斌; 王直; 白素琴

doi:10.3788/OPE.20142205.1165

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大尺度钢板的三维测量和拼接

现代应用光学 | 更新时间：2020-08-13

- 大尺度钢板的三维测量和拼接
- Three-dimensional measurement and registration for large scale plates
- 光学精密工程 2014年22卷第5期页码：1165-1170
- 作者机构：
  
  江苏科技大学计算机科学与工程学院,江苏镇江,212003
- 作者简介：
- 基金信息：
  
  上海市引进技术吸收与创新项目（No.12CH-11）();江苏省产学研联合创新资金资助项目（No.BY2011143）()
- DOI：10.3788/OPE.20142205.1165
  中图分类号： TB92;TP242
- 收稿日期：2013-07-10，
  
  修回日期：2013-08-27，
  
  纸质出版日期：2014-05-25
- 稿件说明：
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史金龙, 钱强, 庞林斌等. 大尺度钢板的三维测量和拼接[J]. 光学精密工程, 2014,22(5): 1165-1170

SHI Jin-long, QIAN Qiang, PANG Lin-bin etc. Three-dimensional measurement and registration for large scale plates[J]. Editorial Office of Optics and Precision Engineering, 2014,22(5): 1165-1170
史金龙, 钱强, 庞林斌等. 大尺度钢板的三维测量和拼接[J]. 光学精密工程, 2014,22(5): 1165-1170 DOI： 10.3788/OPE.20142205.1165.

SHI Jin-long, QIAN Qiang, PANG Lin-bin etc. Three-dimensional measurement and registration for large scale plates[J]. Editorial Office of Optics and Precision Engineering, 2014,22(5): 1165-1170 DOI： 10.3788/OPE.20142205.1165.

摘要

提出了基于投影的三维测量拼接方法，用于测量大尺度钢板表面的三维形状。首先，利用光学扫描仪、背景投影仪两种装置实现大尺度钢板的三维测量。其中，三维光学扫描仪负责测量大尺度钢板不同部分的三维数据，背景投影仪用于向被测钢板投射背景纹理；然后，利用基于随机抽样一致性算法（RANSAC）的拼接算法，将不同时刻测量的局部三维数据进行拼接，得到完整的钢板三维数据；最后，提出了一种拼接误差的评价方式来检验拼接精度。实验结果表明：所提方法的单次拼接精度为0.5mm左右；测量一个7.5m长的钢板，其累计拼接误差为2mm左右。得到的结果基本满足船舶外板加工的精度要求，具有较高的实用价值。

Abstract

A 3D registration method based on the projection was proposed to align different 3D point clouds for measuring large-scale bending steel plates.First

the 3D measurement of a large-scale bending plate was performed by using a 3D optical scanner and a background projector

in which the 3D optical scanner was used to acquire the dense data of different partial views for the large bending plate and the background projector was used for projecting the background texture on the bending plate to align the point clouds measured at different time.Then

the point clouds were aligned by using the RANdom SAmple Consensus(RANSAC) based registration method and the 3D data measured from different time were registered.Finally

an evaluation method was proposed to verify the registration precision.The experimental results show that the precision of one registration is about 0.5 mm

and the accumulated registration error for measuring a plate with a length of 7.5 mm is about 2 mm.The effectiveness and performance evaluated by the experiments prove that the proposed method can satisfy the requirement of stability and accuracy for the industrial applications.

关键词

Keywords

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